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  <url>
    <loc>https://preiser.com/products/sodium-thiosulfate-0-1-n-0-1-m-10-l-cubitainer-traceable-to-nist-lc250606</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25060-6.png?v=1784720843</image:loc>
      <image:title>Sodium Thiosulfate, 0.1 N (0.1 M), 10 L Cubitainer, Traceable to NIST, LC250606</image:title>
      <image:caption>Sodium Thiosulfate, 0.1 N (0.1 M), 10 L Cubitainer, Traceable to NIST, LC250606</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-thiosulfate-0-5-n-0-5-m-4-l-poly-bottle-lc250804</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25080-4.png?v=1784720845</image:loc>
      <image:title>Sodium Thiosulfate 0.5 N (0.5 M), 4 L Poly Bottle, LC250804</image:title>
      <image:caption>Sodium Thiosulfate 0.5 N (0.5 M), 4 L Poly Bottle, LC250804</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-thiosulfate-0-5-n-0-5-m-20-l-cubitainer-traceable-to-nist-lc250805-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25080-5_91239074-6daf-4923-860c-06db956c77a4.png?v=1784720847</image:loc>
      <image:title>Sodium Thiosulfate, 0.5 N (0.5 M), 20 L Cubitainer, Traceable to NIST, LC250805  (Non-Regulated)</image:title>
      <image:caption>Sodium Thiosulfate, 0.5 N (0.5 M), 20 L Cubitainer, Traceable to NIST, LC250805  (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-thiosulfate-1-0-n-1-0-m-1-l-poly-bottle-traceable-to-nist-labchem-lc251002</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25100-2_c1e75718-5aee-4d36-8bac-3fbc57e18621.png?v=1784720849</image:loc>
      <image:title>Sodium Thiosulfate, 1.0 N (1.0 M)  1 L Poly Bottle, Traceable to NIST, LabChem, LC251002</image:title>
      <image:caption>Sodium Thiosulfate, 1.0 N (1.0 M)  1 L Poly Bottle, Traceable to NIST, LabChem, LC251002</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-thiosulfate-1-0-n-1-0-m-sold-by-each-each-poly-bottle-of-4-l-traceable-to-nist-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25100-4_f86cb423-c881-4311-8361-0cc256717318.png?v=1784720851</image:loc>
      <image:title>Sodium Thiosulfate, 1.0 N (1.0 M) (Sold by Each / Each = Poly Bottle of 4 L),  Traceable to NIST  (Non-Regulated)</image:title>
      <image:caption>Sodium Thiosulfate, 1.0 N (1.0 M) (Sold by Each / Each = Poly Bottle of 4 L),  Traceable to NIST  (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-thiosulfate-1-0-n-1-0-m-20-l-cubitainer-traceable-to-nist-labchem-lc251005</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25100-5.png?v=1784720853</image:loc>
      <image:title>Sodium Thiosulfate, 1.0 N (1.0 M)  20 L Cubitainer, Traceable to NIST, LabChem, LC251005</image:title>
      <image:caption>Sodium Thiosulfate, 1.0 N (1.0 M)  20 L Cubitainer, Traceable to NIST, LabChem, LC251005</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/starch-indicator-0-2-preserved-with-salicylic-acid-mercury-free-125-ml-poly-bottle-labchem-lc252907</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25290-7.png?v=1784720855</image:loc>
      <image:title>Starch Indicator, 0.2%, Preserved with Salicylic Acid (Mercury Free), 125 mL Poly Bottle, Labchem, LC252907</image:title>
      <image:caption>Starch Indicator, 0.2%, Preserved with Salicylic Acid (Mercury Free), 125 mL Poly Bottle, Labchem, LC252907</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/starch-indicator-0-5-500-ml-poly-bottle-lc253001-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25300-1.png?v=1784720857</image:loc>
      <image:title>Starch Indicator 0.5%, 500 mL Poly Bottle, LC253001 (Non-Regulated)</image:title>
      <image:caption>Starch Indicator 0.5%, 500 mL Poly Bottle, LC253001 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/starch-indicator-0-5-preserved-with-salicylic-acid-mercury-free-1-l-labchem-lc253002</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25300-2.png?v=1784720859</image:loc>
      <image:title>Starch Indicator, 0.5% Preserved with Salicylic Acid (Mercury Free), 1 L, LabChem, LC253002</image:title>
      <image:caption>Starch Indicator, 0.5% Preserved with Salicylic Acid (Mercury Free), 1 L, LabChem, LC253002</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/starch-indicator-0-5-preserved-with-chloroform-mercury-free-1-l-lc253052</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25305-2_212cda8c-7b70-4a63-bf53-c8dc23f9c913.png?v=1784720860</image:loc>
      <image:title>Starch Indicator, 0.5% Preserved with Chloroform (Mercury Free), 1 L, LC253052</image:title>
      <image:caption>Starch Indicator, 0.5% Preserved with Chloroform (Mercury Free), 1 L, LC253052</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/starch-0-5-preserved-with-chloroform-mercury-free-4-l-poly-bottle-lc253054-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25305-4.png?v=1784720863</image:loc>
      <image:title>Starch, 0.5%, Preserved with Chloroform (Mercury Free), 4 L Poly Bottle, LC253054 (Non-Regulated)</image:title>
      <image:caption>Starch, 0.5%, Preserved with Chloroform (Mercury Free), 4 L Poly Bottle, LC253054 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/starch-indicator-1-sold-by-each-each-500-ml-bottle-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25310-1.png?v=1784720864</image:loc>
      <image:title>Starch Indicator 1% (Sold by Each / Each = 500 mL Bottle) (Non-Regulated)</image:title>
      <image:caption>Starch Indicator 1% (Sold by Each / Each = 500 mL Bottle) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/starch-indicator-1-preserved-with-salicylic-acid-mercury-free</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25310-2_fd88cfc1-48a2-432f-8c9d-0f5dad6f8c9d.png?v=1784720866</image:loc>
      <image:title>Starch Indicator, 1%, Preserved with Salicylic Acid (Mercury Free)</image:title>
      <image:caption>Starch Indicator, 1%, Preserved with Salicylic Acid (Mercury Free)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/starch-indicator-1-preserved-with-salicylic-acid-4-l-poly-bottle-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25310-4.png?v=1784720868</image:loc>
      <image:title>Starch Indicator, 1%, Preserved with Salicylic Acid, 4 L Poly Bottle (Non-Regulated)</image:title>
      <image:caption>Starch Indicator, 1%, Preserved with Salicylic Acid, 4 L Poly Bottle (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfate-standard-1000-ppm-1-ml-1-mg-so4-500-ml-poly-bottle-labchem-lc255101</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25510-1.png?v=1784720870</image:loc>
      <image:title>Sulfate Standard, 1000 ppm (1 mL = 1 mg SO4), 500 mL Poly Bottle, Labchem, LC255101</image:title>
      <image:caption>Sulfate Standard, 1000 ppm (1 mL = 1 mg SO4), 500 mL Poly Bottle, Labchem, LC255101</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-10-w-w-20-l-cubitainer-labchem-lc255905</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25590-5.png?v=1784720872</image:loc>
      <image:title>Sulfuric Acid, 10% w/w, 20 L Cubitainer, LabChem LC255905</image:title>
      <image:caption>Sulfuric Acid, 10% w/w, 20 L Cubitainer, LabChem LC255905</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-50-v-v-1-1-500-ml-amber-glass-bottle</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25640-1_9e5cdc0d-8e95-4027-bbfd-178680412a99.png?v=1784720874</image:loc>
      <image:title>Sulfuric Acid, 50% v/v (1+1), 500 mL Amber Glass Bottle, LabChem, LC256401</image:title>
      <image:caption>Sulfuric Acid, 50% v/v (1+1), 500 mL Amber Glass Bottle, LabChem, LC256401</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-50-v-v-1-1-1-l-amber-glass-bottle-labchem-lc256402</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25640-2.png?v=1784720876</image:loc>
      <image:title>Sulfuric Acid, 50% v/v (1+1), 1 L Amber Glass Bottle, Labchem, LC256402</image:title>
      <image:caption>Sulfuric Acid, 50% v/v (1+1), 1 L Amber Glass Bottle, Labchem, LC256402</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-50-v-v-1-1-sold-by-each-each-glass-bottle-of-2-5-l-traceable-to-nist-8-un1830-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25640-3.png?v=1784720878</image:loc>
      <image:title>Sulfuric Acid, 50% V/V (1+1) (Sold by Each / Each = Glass Bottle of 2.5 L),  Traceable to NIST  (8, UN1830, P.G. II)</image:title>
      <image:caption>Sulfuric Acid, 50% V/V (1+1) (Sold by Each / Each = Glass Bottle of 2.5 L),  Traceable to NIST  (8, UN1830, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-0-01n-0-005m-traceable-to-nist-1-l-poly-bottle-labchem-lc256552-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25655-2.png?v=1784720880</image:loc>
      <image:title>Sulfuric Acid, 0.01N (0.005M), Traceable to NIST, 1 L Poly Bottle, Labchem, LC256552 (Non-Regulated)</image:title>
      <image:caption>Sulfuric Acid, 0.01N (0.005M), Traceable to NIST, 1 L Poly Bottle, Labchem, LC256552 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-0-02-n-0-01-m-sold-by-each-each-poly-bottle-of-500-ml-traceable-to-nist-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25660-1.png?v=1784720882</image:loc>
      <image:title>Sulfuric Acid, 0.02 N (0.01 M) (Sold by Each / Each = Poly Bottle of 500 mL),  Traceable to NIST  (Non-Regulated)</image:title>
      <image:caption>Sulfuric Acid, 0.02 N (0.01 M) (Sold by Each / Each = Poly Bottle of 500 mL),  Traceable to NIST  (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-0-02-n-0-01-m-traceable-to-nist-1-l-poly-bottle-labchem-lc256602-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25660-2_6f036df4-7873-45ab-951e-b6fbf699b48c.png?v=1784720884</image:loc>
      <image:title>Sulfuric Acid, 0.02 N (0.01 M), Traceable to NIST, 1 L Poly Bottle, Labchem, LC256602 (Non-Regulated)</image:title>
      <image:caption>Sulfuric Acid, 0.02 N (0.01 M), Traceable to NIST, 1 L Poly Bottle, Labchem, LC256602 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-0-02-n-sold-by-each-each-4-l-poly-bottle-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25660-4_6b2523b5-d875-4122-96ca-5e9f3352e63e.png?v=1784923750</image:loc>
      <image:title>Sulfuric Acid, 0.02 N (Sold by Each / Each = 4 L Poly Bottle) (Non-Regulated)</image:title>
      <image:caption>Sulfuric Acid, 0.02 N (Sold by Each / Each = 4 L Poly Bottle) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-0-02-n-0-01-m-20-l-labchem-lc256605</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25660-5_05f8d70c-0680-45c7-a079-23c8fb80a0e3.png?v=1784720889</image:loc>
      <image:title>Sulfuric Acid, 0.02 N (0.01 M), 20 L, LabChem, LC256605</image:title>
      <image:caption>Sulfuric Acid, 0.02 N (0.01 M), 20 L, LabChem, LC256605</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-0-02-n-0-01-m-10-l-labchem-lc256606</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25660-6.png?v=1784720890</image:loc>
      <image:title>Sulfuric Acid, 0.02 N (0.01 M), 10 L, LabChem, LC256606</image:title>
      <image:caption>Sulfuric Acid, 0.02 N (0.01 M), 10 L, LabChem, LC256606</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-0-1-n-sold-by-each-each-1-l-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25680-2.png?v=1784720892</image:loc>
      <image:title>Sulfuric Acid, 0.1 N (Sold by Each / Each = 1 L) (Non-Regulated)</image:title>
      <image:caption>Sulfuric Acid, 0.1 N (Sold by Each / Each = 1 L) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-0-1-n-0-05-m-sold-by-each-each-poly-bottle-of-4-l-traceable-to-nist-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25680-4.png?v=1784720894</image:loc>
      <image:title>Sulfuric Acid, 0.1 N (0.05 M) (Sold by Each / Each = Poly Bottle of 4 L),  Traceable to NIST  (Non-Regulated)</image:title>
      <image:caption>Sulfuric Acid, 0.1 N (0.05 M) (Sold by Each / Each = Poly Bottle of 4 L),  Traceable to NIST  (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-0-5-n-0-25-m-500-ml-poly-bottle-labchem-lc257401</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25740-1.png?v=1784720896</image:loc>
      <image:title>Sulfuric Acid, 0.5 N (0.25 M), 500 mL Poly Bottle, Labchem, LC257401</image:title>
      <image:caption>Sulfuric Acid, 0.5 N (0.25 M), 500 mL Poly Bottle, Labchem, LC257401</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-0-5-n-sold-by-each-each-1-l-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25740-2.png?v=1784720898</image:loc>
      <image:title>Sulfuric Acid, 0.5 N (Sold by Each / Each = 1 L) (Non-Regulated)</image:title>
      <image:caption>Sulfuric Acid, 0.5 N (Sold by Each / Each = 1 L) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-0-5-n-0-25-m-sold-by-each-each-poly-bottle-of-4-l-traceable-to-nist-8-un2796-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25740-4.png?v=1784720900</image:loc>
      <image:title>Sulfuric Acid, 0.5 N (0.25 M) (Sold by Each / Each = Poly Bottle of 4 L),  Traceable to NIST  (8, UN2796, P.G. II)</image:title>
      <image:caption>Sulfuric Acid, 0.5 N (0.25 M) (Sold by Each / Each = Poly Bottle of 4 L),  Traceable to NIST  (8, UN2796, P.G. II)</image:caption>
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  <url>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25740-5.png?v=1784720902</image:loc>
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      <image:caption>Sulfuric Acid, 0.5 N (0.25 M) (Sold by Each / Each = Cubitainer of 20 L),  Traceable to NIST  (8, UN2796, P.G. II)</image:caption>
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  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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  </url>
  <url>
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  </url>
  <url>
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    <changefreq>daily</changefreq>
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  </url>
  <url>
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      <image:caption>Sulfuric Acid, 4.0 N (2.0 M) (Sold by Each / Each = Cubitainer of 20 L),  Traceable to NIST  (8, UN2796, P.G. II)</image:caption>
    </image:image>
  </url>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Sulfuric Acid, 6.0N, 500 mL, LC258501 (8,UN2796 P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25850-2.png?v=1784720914</image:loc>
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      <image:caption>Sulfuric Acid, 6.0 N (3.0 M), Traceable to NIST, 1 L Poly Bottle (8, UN2796, P.G. II)</image:caption>
    </image:image>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-25850-3.png?v=1784720916</image:loc>
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      <image:caption>Sulfuric Acid, 6N, 2.5 L (8, UN2796. P.G. II)</image:caption>
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  </url>
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    <changefreq>daily</changefreq>
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      <image:caption>Sodium Hypochlorite, 10%, 55 gal. Drum, Brenntag, 588193</image:caption>
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  </url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-9700-68.png?v=1784720922</image:loc>
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      <image:caption>Sodium Bicarbonate USP Powder (Non-Regulated)</image:caption>
    </image:image>
  </url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Sodium Bisultate, Anhydrous, Technical Grade, 50 lb</image:caption>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-9760-85.png?v=1784720925</image:loc>
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      <image:caption>Sodium Carbonate, Light Density Soda Ash, FMC Grade 100T, 50 lb. Bag</image:caption>
    </image:image>
  </url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-9779-85.png?v=1784720927</image:loc>
      <image:title>Soda Ash Briquettes, 50 lb.</image:title>
      <image:caption>Soda Ash Briquettes, 50 lb.</image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-9970-68.png?v=1784720929</image:loc>
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      <image:caption>Sodium Hydroxide, Flakes, Technical Grade, 8, UN1823, PG II</image:caption>
    </image:image>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-9970-88.png?v=1784720930</image:loc>
      <image:title>PELS Caustic Soda Beads 50 lb Bag, AXIALL, 918458</image:title>
      <image:caption>PELS Caustic Soda Beads 50 lb Bag, AXIALL, 918458</image:caption>
    </image:image>
  </url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PIS-9970-89_a1fefbf0-1767-44e5-8164-f17f7d578181.png?v=1784720932</image:loc>
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      <image:caption>Sodium Hydroxide (Caustic) Pellets, 50 lb. Bag, 16200-BAG</image:caption>
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  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/tclp-extraction-fluid-1-20-l-cubitainer-lc259955-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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    </image:image>
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  <url>
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      <image:caption>TCLP Extraction Fluid #1, 10 L Cubitainer, LC259956 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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      <image:caption>Thymol Blue, 0.04%, Aqueous, pH 1.2 - 2.8 Red to Yellow, pH 8.0 - 9.6 Yellow to Blue, 125 mL Poly Bottle, LC260207 (Non-Regulated)</image:caption>
    </image:image>
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    </image:image>
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      <image:caption>TCLP Extraction Fluid # 1, 20 L, LabChem, LC259955</image:caption>
    </image:image>
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      <image:caption>Deionized Water 4 L ASTM, Type II, Non-Regulated, LabChem, LC267504</image:caption>
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      <image:caption>Water, Deionized, ASTM Type II (Sold by Each / Each = Cubitainer of 20 L) (Non-Regulated)</image:caption>
    </image:image>
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      <image:caption>Water Hardness Buffer, Odorless, 1 L Poly Bottle, LC268002 (Non-Regulated)</image:caption>
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      <image:caption>Water Hardness Buffer, with Magnesium, 1 L Poly Bottle, LC268102 (8, UN2672, P.G. III)</image:caption>
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      <image:caption>Xylenol Orange, 0.1% Aqueous, 125 mL Poly Bottle, Labchem, LC270007</image:caption>
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      <image:caption>Zinc AA Standard, 1000 ppm, 1 mL=1 mg Zn, Zinc nitrate-dilute nitric acid, Traceable to NIST, 500 mL Poly Bottle, (8, UN3264, P.G. II)</image:caption>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PLY-609UPS.png?v=1784720963</image:loc>
      <image:title>Foam Containers, with Carton, Expanded Polystyrene, Ideal for the Safe Storage and Delivery of Most Refrigerated or Frozen Materials</image:title>
      <image:caption>Foam Containers, with Carton, Expanded Polystyrene, Ideal for the Safe Storage and Delivery of Most Refrigerated or Frozen Materials</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/polaroid-mp-4-standard-camera-column</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/POL-4401DEMO_1e36df1d-bc13-48c8-82f2-0432e1517099.png?v=1784720965</image:loc>
      <image:title>Polaroid MP-4 Standard Camera &amp; Column</image:title>
      <image:caption>Polaroid MP-4 Standard Camera &amp; Column</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/polaroid-624126-digital-microscope-camera-with-scsi-card-cable</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/POL-624126.png?v=1784720966</image:loc>
      <image:title>Polaroid 624126 Digital Microscope Camera with SCSI Card &amp; Cable</image:title>
      <image:caption>Polaroid 624126 Digital Microscope Camera with SCSI Card &amp; Cable</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/autoclave-tape-3-4-in-x-2160-in-visual-indicator-propper</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PRO-268005.png?v=1784720967</image:loc>
      <image:title>Autoclave Tape, 3/4 in. x 2160 in., Visual Indicator, Propper</image:title>
      <image:caption>Autoclave Tape, 3/4 in. x 2160 in., Visual Indicator, Propper</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/autoclave-tape-1-in-x-60-yds</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PRO-268006_d893cd62-aebb-4ea6-976f-2a5eca020e51.png?v=1784720969</image:loc>
      <image:title>Autoclave Tape 1 in. x 60 yds.</image:title>
      <image:caption>Autoclave Tape 1 in. x 60 yds.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/autoclave-wrap-steri-wrap-registered-i-blue-12-in-x-12-in-1000-cs-propper-manufacturing-co-311012</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PRO-311012.png?v=1784720970</image:loc>
      <image:title>Autoclave Wrap, Steri-Wrap (Registered) I, Blue, 12 in. x 12 in., 1000/CS, Propper Manufacturing Co, 311012</image:title>
      <image:caption>Autoclave Wrap, Steri-Wrap (Registered) I, Blue, 12 in. x 12 in., 1000/CS, Propper Manufacturing Co, 311012</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/autoclave-wrap-steri-wrap-registered-iii-blue-18-in-x-18-in-400-cs-propper-manufacturing-co-313018</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PRO-313018.png?v=1784720971</image:loc>
      <image:title>Autoclave Wrap, Steri-Wrap (Registered) III, Blue, 18 in. x 18 in., 400/CS, Propper Manufacturing Co, 313018</image:title>
      <image:caption>Autoclave Wrap, Steri-Wrap (Registered) III, Blue, 18 in. x 18 in., 400/CS, Propper Manufacturing Co, 313018</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/shelf-for-mechanical-convection-oven-91-2340-40-thermo-scientific-50127764</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PSC-50127764.png?v=1784720973</image:loc>
      <image:title>Shelf for Mechanical Convection Oven 91-2340-40, Thermo Scientific, 50127764</image:title>
      <image:caption>Shelf for Mechanical Convection Oven 91-2340-40, Thermo Scientific, 50127764</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ayers-scrapers-7-in-case-of-5000-special-pricing-now-available</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PUR-2184_f7447470-96b9-47e1-9fcf-765e1b9228ac.png?v=1784720976</image:loc>
      <image:title>Ayers Scrapers, 7 in. (Case of 5000)           (SPECIAL PRICING NOW AVAILABLE)</image:title>
      <image:caption>Ayers Scrapers, 7 in. (Case of 5000)           (SPECIAL PRICING NOW AVAILABLE)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cytology-brush-7-in-case-of-1000-special-pricing-now-available</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/PUR-2199.png?v=1784720977</image:loc>
      <image:title>Cytology Brush, 7 in. (Case of 1000)          (SPECIAL PRICING NOW AVAILABLE)</image:title>
      <image:caption>Cytology Brush, 7 in. (Case of 1000)          (SPECIAL PRICING NOW AVAILABLE)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/septa-and-seal-silver-inserted-into-cap-0-038-in-red-rubber-0-002-in-clear-etfe-for-chromatography-vial-package-of-100</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-0200-104.png?v=1784720978</image:loc>
      <image:title>Septa and Seal, Silver, Inserted into Cap, 0.038 in. Red Rubber &amp; 0.002 in. Clear ETFE, for Chromatography Vial (Package of 100)</image:title>
      <image:caption>Septa and Seal, Silver, Inserted into Cap, 0.038 in. Red Rubber &amp; 0.002 in. Clear ETFE, for Chromatography Vial (Package of 100)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-standard-jar-clear-glass-wide-mouth-32-oz-level-1-with-ptfe-lined-cap-12-cs-qec-1113-0032</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1113-0032_1b406f46-b017-463b-baf7-52de5a3be5cc.png?v=1784720980</image:loc>
      <image:title>Bottle, Standard Jar Clear Glass Wide-Mouth, 32 oz., Level 1 with PTFE-lined Cap, 12/CS, QEC, 1113-0032</image:title>
      <image:caption>Bottle, Standard Jar Clear Glass Wide-Mouth, 32 oz., Level 1 with PTFE-lined Cap, 12/CS, QEC, 1113-0032</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-standard-jar-clear-glass-wide-mouth-128-oz-level-1-with-ptfe-lined-cap-4-cs-qec-1113-0128</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1113-0128_f8b8eb0e-f13e-4078-a6ff-9439ba6f653a.png?v=1784720981</image:loc>
      <image:title>Bottle, Standard Jar Clear Glass Wide-Mouth, 128 oz., Level 1 with PTFE-lined Cap, 4/CS, QEC, 1113-0128</image:title>
      <image:caption>Bottle, Standard Jar Clear Glass Wide-Mouth, 128 oz., Level 1 with PTFE-lined Cap, 4/CS, QEC, 1113-0128</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-standard-jar-clear-glass-wide-mouth-4-oz-level-1-with-ptfe-lined-cap-24-cs-qec-1113-0004</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-11130004_3ee0c4f7-447c-4ea9-b85a-c8317fb1543e.png?v=1784720982</image:loc>
      <image:title>Bottle, Standard Jar Clear Glass Wide-Mouth, 4 oz., Level 1 with PTFE-lined Cap, 24/CS, QEC, 1113-0004</image:title>
      <image:caption>Bottle, Standard Jar Clear Glass Wide-Mouth, 4 oz., Level 1 with PTFE-lined Cap, 24/CS, QEC, 1113-0004</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-standard-jar-clear-glass-wide-mouth-8-oz-level-1-with-ptfe-lined-cap-12-cs-qec-1113-0008</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-11130008.png?v=1784720984</image:loc>
      <image:title>Bottle, Standard Jar Clear Glass Wide-Mouth, 8 oz., Level 1 with PTFE-lined Cap, 12/CS, QEC, 1113-0008</image:title>
      <image:caption>Bottle, Standard Jar Clear Glass Wide-Mouth, 8 oz., Level 1 with PTFE-lined Cap, 12/CS, QEC, 1113-0008</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-french-square-4-oz-125-ml-24-cs</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1115-0004_ee553114-e514-4601-b843-6dd92d53c74a.png?v=1784720985</image:loc>
      <image:title>Bottle, French Square, 4 oz. (125 mL), 24/CS</image:title>
      <image:caption>Bottle, French Square, 4 oz. (125 mL), 24/CS</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-amber-glass-boston-round-32-oz-950-ml-with-33-400-cap</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1121-0032_845ed80a-29b9-46ae-9178-c0b7931194ef.png?v=1784720986</image:loc>
      <image:title>Bottle, Amber Glass, Boston Round, 32 oz./950 mL, with 33-400 Cap</image:title>
      <image:caption>Bottle, Amber Glass, Boston Round, 32 oz./950 mL, with 33-400 Cap</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-oblong-wide-mouth-hdpe-16-oz-level-1-polyethylene-foam-lined-cap-24-cs-qec-1212-0016</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1212-0016.png?v=1784720988</image:loc>
      <image:title>Bottle, Oblong Wide-Mouth HDPE, 16 oz., Level 1, Polyethylene-Foam Lined Cap, 24/CS, QEC, 1212-0016</image:title>
      <image:caption>Bottle, Oblong Wide-Mouth HDPE, 16 oz., Level 1, Polyethylene-Foam Lined Cap, 24/CS, QEC, 1212-0016</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-oblong-wide-mouth-hdpe-34-oz-level-1-polyethylene-foam-lined-cap-12-cs-qec-1212-0034</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1212-0032.png?v=1784720989</image:loc>
      <image:title>Bottle, Oblong Wide-Mouth HDPE, 34 oz., Level 1, Polyethylene-Foam lined Cap, 12/CS, QEC, 1212-0034</image:title>
      <image:caption>Bottle, Oblong Wide-Mouth HDPE, 34 oz., Level 1, Polyethylene-Foam lined Cap, 12/CS, QEC, 1212-0034</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-round-wide-mouth-hdpe-4-oz-level-1-with-polyethylene-foam-lined-cap-48-cs-qec-1213-0004</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1213-0004.png?v=1784720990</image:loc>
      <image:title>Bottle, Round Wide-Mouth HDPE, 4 oz., Level 1 with Polyethylene-Foam Lined Cap, 48/CS, QEC, 1213-0004</image:title>
      <image:caption>Bottle, Round Wide-Mouth HDPE, 4 oz., Level 1 with Polyethylene-Foam Lined Cap, 48/CS, QEC, 1213-0004</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-round-wide-mouth-hdpe-16-oz-level-1-with-polyethylene-foam-lined-cap-24-cs-qec-1213-0016</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1213-0016.png?v=1784720991</image:loc>
      <image:title>Bottle, Round Wide-Mouth HDPE, 16 oz., Level 1 with Polyethylene-Foam Lined Cap, 24/CS, QEC, 1213-0016</image:title>
      <image:caption>Bottle, Round Wide-Mouth HDPE, 16 oz., Level 1 with Polyethylene-Foam Lined Cap, 24/CS, QEC, 1213-0016</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-round-wide-mouth-hdpe-32-oz-level-1-with-polyethylene-foam-lined-cap-12-cs-qec-1213-0032</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1213-0032.png?v=1784720993</image:loc>
      <image:title>Bottle, Round Wide-Mouth HDPE, 32 oz., Level 1 with Polyethylene-Foam Lined Cap, 12/CS, QEC, 1213-0032</image:title>
      <image:caption>Bottle, Round Wide-Mouth HDPE, 32 oz., Level 1 with Polyethylene-Foam Lined Cap, 12/CS, QEC, 1213-0032</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-round-wide-mouth-hdpe-128-oz-level-1-with-polyethylene-foam-lined-cap-4-cs-qec-1213-0128</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1213-0128_d66a88a8-fdb6-4cde-afd7-54bf3adecb99.png?v=1784720994</image:loc>
      <image:title>Bottle, Round Wide-Mouth HDPE, 128 oz., Level 1 with Polyethylene-Foam Lined Cap, 4/CS, QEC, 1213-0128</image:title>
      <image:caption>Bottle, Round Wide-Mouth HDPE, 128 oz., Level 1 with Polyethylene-Foam Lined Cap, 4/CS, QEC, 1213-0128</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ptfe-silicone-septa-for-open-top-cap-0-125-thick-100-pk</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1F3200-24MM_fed860d4-2160-4077-a96e-74d19fa727c8.png?v=1784720995</image:loc>
      <image:title>PTFE/Silicone Septa for Open Top Cap, 0.125 Thick, 100/Pk</image:title>
      <image:caption>PTFE/Silicone Septa for Open Top Cap, 0.125 Thick, 100/Pk</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/open-top-white-polypropylene-cap-with-0-125-in-ptfe-silicone-septa</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1M24-414WS_336a633e-fb17-4bb4-b4cf-3f138e9fff15.png?v=1784720997</image:loc>
      <image:title>Open Top White Polypropylene Cap with 0.125 in. PTFE/silicone Septa</image:title>
      <image:caption>Open Top White Polypropylene Cap with 0.125 in. PTFE/silicone Septa</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cap-white-polypropylene-teflon-lined-38-mm</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1T38-400W.png?v=1784720998</image:loc>
      <image:title>Cap, White Polypropylene, Teflon Lined, 38 mm</image:title>
      <image:caption>Cap, White Polypropylene, Teflon Lined, 38 mm</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cap-white-polypropylene-teflon-lined-48-mm</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1T48-400W_42e18bbf-1b04-4342-8c1a-cd2bb1c7f886.png?v=1784720999</image:loc>
      <image:title>Cap, White Polypropylene, Teflon Lined, 48 mm</image:title>
      <image:caption>Cap, White Polypropylene, Teflon Lined, 48 mm</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cap-white-polypropylene-with-ptfe-liner-53-mm-53-400-thread-50-pk-qec-1t53-400w</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1T53-400W_e16dbff7-948a-4a59-a986-441cef3c7d7b.png?v=1784721001</image:loc>
      <image:title>Cap, White Polypropylene with PTFE-liner, 53 mm, 53-400 Thread, 50/PK, QEC, 1T53-400W</image:title>
      <image:caption>Cap, White Polypropylene with PTFE-liner, 53 mm, 53-400 Thread, 50/PK, QEC, 1T53-400W</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cap-58-mm-polypropylene-ptfe-lined-white-level-1-50-pk</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1T58-400W.png?v=1784778015</image:loc>
      <image:title>Cap, 58 mm Polypropylene, PTFE-Lined, White (Level 1), 50/PK</image:title>
      <image:caption>Cap, 58 mm Polypropylene, PTFE-Lined, White (Level 1), 50/PK</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cap-white-polypropylene-teflon-lined-89-mm</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-1T89-400W_b7a08143-632f-4456-836b-487c3fc470bd.png?v=1784721004</image:loc>
      <image:title>Cap, White Polypropylene, Teflon Lined, 89 mm</image:title>
      <image:caption>Cap, White Polypropylene, Teflon Lined, 89 mm</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/voa-vial-open-top-clear-glass-with-24-414-cap-40-ml-pre-cleaned-to-epa-standards</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-2112-40ML_13e25665-7543-498a-9e95-211bfb3233ed.png?v=1784721005</image:loc>
      <image:title>VOA Vial, Open Top, Clear Glass, with 24-414 Cap, 40 mL, Pre-Cleaned to EPA Standards</image:title>
      <image:caption>VOA Vial, Open Top, Clear Glass, with 24-414 Cap, 40 mL, Pre-Cleaned to EPA Standards</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-standard-jar-wide-mouth-clear-glass-4-oz-level-2-epa-cleaned-with-ptfe-lined-cap-24-cs-qec-2113-0004</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-2113-0004_73bf57a0-7464-4dfe-aab3-3c1157398fbe.png?v=1784721007</image:loc>
      <image:title>Bottle, Standard Jar, Wide-Mouth Clear Glass, 4 oz., Level 2 EPA Cleaned with PTFE-lined Cap, 24/CS , QEC, 2113-0004</image:title>
      <image:caption>Bottle, Standard Jar, Wide-Mouth Clear Glass, 4 oz., Level 2 EPA Cleaned with PTFE-lined Cap, 24/CS , QEC, 2113-0004</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-standard-jar-wide-mouth-clear-glass-16-oz-level-2-epa-cleaned-with-ptfe-lined-cap-12-cs-qec-2113-0016</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-2113-0016.png?v=1784721008</image:loc>
      <image:title>Bottle, Standard Jar, Wide-Mouth Clear Glass, 16 oz., Level 2 EPA Cleaned with PTFE-lined Cap, 12/CS , QEC, 2113-0016</image:title>
      <image:caption>Bottle, Standard Jar, Wide-Mouth Clear Glass, 16 oz., Level 2 EPA Cleaned with PTFE-lined Cap, 12/CS , QEC, 2113-0016</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/precleaned-bottle-epa-standards-32-oz-case-of-12-bottles</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-21130032_e3c5e707-afe1-4543-a751-1b3e7be292a0.png?v=1784721009</image:loc>
      <image:title>Precleaned Bottle, EPA Standards, 32  oz. (Case of 12 Bottles)</image:title>
      <image:caption>Precleaned Bottle, EPA Standards, 32  oz. (Case of 12 Bottles)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/precleaned-bottle-epa-standards-64-oz-case-of-6-bottles</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-21130064.png?v=1784721011</image:loc>
      <image:title>Precleaned Bottle, EPA Standards, 64  oz. (Case of 6 Bottles)</image:title>
      <image:caption>Precleaned Bottle, EPA Standards, 64  oz. (Case of 6 Bottles)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-wide-mouth-clear-glass-4-oz-125-ml-with-teflon-lined-polypropylene-cap-precleaned-to-epa-standards-qec-2114-0004</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-2114-0004_7a206267-5055-491c-a20f-4717e80bb1e9.png?v=1784721012</image:loc>
      <image:title>Bottle, Wide Mouth, Clear Glass, 4 oz. / 125 mL, with Teflon Lined Polypropylene Cap, Precleaned to EPA Standards,  QEC, 2114-0004</image:title>
      <image:caption>Bottle, Wide Mouth, Clear Glass, 4 oz. / 125 mL, with Teflon Lined Polypropylene Cap, Precleaned to EPA Standards,  QEC, 2114-0004</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-wide-mouth-clear-glass-2-oz-60-ml-with-teflon-lined-polypropylene-cap-precleaned-to-epa-standards</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-21140002.png?v=1784721013</image:loc>
      <image:title>Bottle, Wide Mouth, Clear Glass, 2 oz. / 60 mL, with Teflon lined Polypropylene Cap, Precleaned to EPA Standards</image:title>
      <image:caption>Bottle, Wide Mouth, Clear Glass, 2 oz. / 60 mL, with Teflon lined Polypropylene Cap, Precleaned to EPA Standards</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-wide-mouth-clear-glass-9oz-250-ml-with-teflon-lined-polypropylene-cap-precleaned-to-epa-standards</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-21140009_d3a391b4-f773-43e2-ad57-62db567bb611.png?v=1784721015</image:loc>
      <image:title>Bottle, Wide Mouth, Clear Glass, 9oz. / 250 mL, with Teflon Lined Polypropylene Cap, Precleaned to EPA Standards</image:title>
      <image:caption>Bottle, Wide Mouth, Clear Glass, 9oz. / 250 mL, with Teflon Lined Polypropylene Cap, Precleaned to EPA Standards</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-wide-mouth-clear-glass-32-oz-1000-ml-with-teflon-lined-polypropylene-cap-precleaned-to-epa-standards</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-21140032.png?v=1784721016</image:loc>
      <image:title>Bottle, Wide Mouth, Clear Glass, 32 oz. / 1000 mL, with Teflon Lined Polypropylene Cap, Precleaned to EPA Standards</image:title>
      <image:caption>Bottle, Wide Mouth, Clear Glass, 32 oz. / 1000 mL, with Teflon Lined Polypropylene Cap, Precleaned to EPA Standards</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-with-septa-amber-glass-with-24-mm-cap-pre-cleaned-to-epa-standards-8-oz-250-ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-2121-S008.png?v=1784721017</image:loc>
      <image:title>Bottle, with Septa, Amber Glass, with 24 mm Cap, Pre-Cleaned to EPA Standards, 8 oz../250 mL</image:title>
      <image:caption>Bottle, with Septa, Amber Glass, with 24 mm Cap, Pre-Cleaned to EPA Standards, 8 oz../250 mL</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/voa-vial-open-top-amber-glass-pre-cleaned-to-epa-standards-40-ml-with-24-414-cap</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-2122-40ML_e4b11adc-c9eb-44e5-8ddc-be3fd6b5e74d.png?v=1784778016</image:loc>
      <image:title>VOA Vial, Open Top, Amber Glass, Pre-Cleaned to EPA Standards, 40 mL with 24-414 Cap</image:title>
      <image:caption>VOA Vial, Open Top, Amber Glass, Pre-Cleaned to EPA Standards, 40 mL with 24-414 Cap</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-amber-packer-with-38-mm-cap-pre-cleaned-to-epa-standards-4-oz-125-ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-21220004_c7f76c1b-7d66-47cc-b6da-3b5abe2c010e.png?v=1784721020</image:loc>
      <image:title>Bottle, Amber Packer, with 38 mm Cap, Pre-Cleaned to EPA Standards, 4 oz./125 mL</image:title>
      <image:caption>Bottle, Amber Packer, with 38 mm Cap, Pre-Cleaned to EPA Standards, 4 oz./125 mL</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-amber-packer-with-53-mm-cap-pre-cleaned-to-epa-standards-8-oz-250-ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-21220008-01.png?v=1784721021</image:loc>
      <image:title>Bottle, Amber Packer, with 53 mm Cap, Pre-Cleaned to EPA Standards, 8 oz./250 mL</image:title>
      <image:caption>Bottle, Amber Packer, with 53 mm Cap, Pre-Cleaned to EPA Standards, 8 oz./250 mL</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-amber-packer-with-53-mm-cap-pre-cleaned-to-epa-standards-16oz-500-ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-21220016_4944d124-c544-4996-b716-c3b435b36d4d.png?v=1784721023</image:loc>
      <image:title>Bottle, Amber Packer, with 53 mm Cap, Pre-Cleaned to EPA Standards, 16oz./500 mL</image:title>
      <image:caption>Bottle, Amber Packer, with 53 mm Cap, Pre-Cleaned to EPA Standards, 16oz./500 mL</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-amber-packer-with-53-mm-cap-pre-cleaned-to-epa-standards-32-oz-1000-ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-21220032-01.png?v=1784721025</image:loc>
      <image:title>Bottle, Amber Packer, with 53 mm Cap, Pre-Cleaned to EPA Standards, 32 oz./1000 mL</image:title>
      <image:caption>Bottle, Amber Packer, with 53 mm Cap, Pre-Cleaned to EPA Standards, 32 oz./1000 mL</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/34-oz-1000-ml-amber-packer-level-2-with-53-400-cap-12-cs</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-21220034.png?v=1784923753</image:loc>
      <image:title>34 oz/1000 mL Amber Packer (Level 2) with 53-400 Cap. 12/CS</image:title>
      <image:caption>34 oz/1000 mL Amber Packer (Level 2) with 53-400 Cap. 12/CS</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-cylinder-round-narrow-mouth-hdpe-8-oz-level-2-epa-cleaned-with-polyethylene-foam-lined-cap-24-cs-qec-2211-0008</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-22110008.png?v=1784721027</image:loc>
      <image:title>Bottle, Cylinder Round Narrow-Mouth HDPE, 8 oz., Level 2 EPA Cleaned with Polyethylene-Foam Lined Cap 24/CS, QEC, 2211-0008</image:title>
      <image:caption>Bottle, Cylinder Round Narrow-Mouth HDPE, 8 oz., Level 2 EPA Cleaned with Polyethylene-Foam Lined Cap 24/CS, QEC, 2211-0008</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-oblong-wide-mouth-hdpe-8-oz-level-2-epa-cleaned-polyethylene-foam-lined-cap-24-cs-qec-2212-0008</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-2212-0008.png?v=1784721029</image:loc>
      <image:title>Bottle, Oblong Wide-Mouth HDPE, 8 oz., Level 2 EPA Cleaned, Polyethylene-Foam Lined Cap, 24/CS, QEC, 2212-0008</image:title>
      <image:caption>Bottle, Oblong Wide-Mouth HDPE, 8 oz., Level 2 EPA Cleaned, Polyethylene-Foam Lined Cap, 24/CS, QEC, 2212-0008</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-oblong-wide-mouth-hdpe-16-oz-level-2-epa-cleaned-polyethylene-foam-lined-cap-24-cs-qec-2212-0016</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-2212-0016.png?v=1784721030</image:loc>
      <image:title>Bottle, Oblong Wide-Mouth HDPE, 16 oz., Level 2 EPA Cleaned, Polyethylene-Foam Lined Cap, 24/CS, QEC, 2212-0016</image:title>
      <image:caption>Bottle, Oblong Wide-Mouth HDPE, 16 oz., Level 2 EPA Cleaned, Polyethylene-Foam Lined Cap, 24/CS, QEC, 2212-0016</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-oblong-wide-mouth-hdpe-32-oz-level-2-epa-cleaned-polyethylene-foam-lined-cap-12-cs-qec-2212-0032</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-2212-0032_965c2247-39fe-4b51-b7e7-0d79e98e6e3d.png?v=1784721031</image:loc>
      <image:title>Bottle, Oblong Wide-Mouth HDPE, 32 oz., Level 2 EPA Cleaned, Polyethylene-Foam Lined Cap, 12/CS, QEC, 2212-0032</image:title>
      <image:caption>Bottle, Oblong Wide-Mouth HDPE, 32 oz., Level 2 EPA Cleaned, Polyethylene-Foam Lined Cap, 12/CS, QEC, 2212-0032</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-round-wide-mouth-hdpe-32-oz-level-2-epa-cleaned-with-polyethylene-foam-lined-cap-12-cs-qec-2213-0032</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-2213-0032.png?v=1784721033</image:loc>
      <image:title>Bottle, Round Wide-Mouth HDPE, 32 oz., Level 2 EPA Cleaned with Polyethylene-Foam Lined Cap, 12/CS, QEC, 2213-0032</image:title>
      <image:caption>Bottle, Round Wide-Mouth HDPE, 32 oz., Level 2 EPA Cleaned with Polyethylene-Foam Lined Cap, 12/CS, QEC, 2213-0032</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-round-wide-mouth-hdpe-77-oz-level-2-epa-cleaned-with-polyethylene-foam-lined-cap-6-cs-qec-2213-0077</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-2213-0077.png?v=1784721034</image:loc>
      <image:title>Bottle, Round Wide-Mouth HDPE, 77 oz., Level 2 EPA Cleaned with Polyethylene-Foam Lined Cap, 6/CS, QEC, 2213-0077</image:title>
      <image:caption>Bottle, Round Wide-Mouth HDPE, 77 oz., Level 2 EPA Cleaned with Polyethylene-Foam Lined Cap, 6/CS, QEC, 2213-0077</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-round-wide-mouth-hdpe-128-oz-level-2-epa-cleaned-with-polyethylene-foam-lined-cap-4-cs-qec-2213-0128</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-2213-0128.png?v=1784721036</image:loc>
      <image:title>Bottle, Round Wide-Mouth HDPE, 128 oz., Level 2 EPA Cleaned with Polyethylene-Foam Lined Cap, 4/CS, QEC, 2213-0128</image:title>
      <image:caption>Bottle, Round Wide-Mouth HDPE, 128 oz., Level 2 EPA Cleaned with Polyethylene-Foam Lined Cap, 4/CS, QEC, 2213-0128</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-round-wide-mouth-hdpe-4-oz-level-2-epa-cleaned-with-polyethylene-foam-lined-cap-48-cs-qec-2213-0004</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-22130004.png?v=1784721037</image:loc>
      <image:title>Bottle, Round Wide-Mouth HDPE, 4 oz., Level 2 EPA Cleaned with Polyethylene-Foam Lined Cap, 48/CS, QEC, 2213-0004</image:title>
      <image:caption>Bottle, Round Wide-Mouth HDPE, 4 oz., Level 2 EPA Cleaned with Polyethylene-Foam Lined Cap, 48/CS, QEC, 2213-0004</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/voa-vials-hcl-pre-cleaned-withcap-with-certification-of-analysis-40-ml-case-of-72</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-3112-40HCL.png?v=1784721038</image:loc>
      <image:title>VOA Vials, HCl, Pre-Cleaned, withCap, with Certification of Analysis, 40 mL (Case of 72)</image:title>
      <image:caption>VOA Vials, HCl, Pre-Cleaned, withCap, with Certification of Analysis, 40 mL (Case of 72)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/voa-vial-open-top-clear-glass-with-24-414-cap-40-ml-pre-cleaned-to-epa-standards-with-certificate-of-analysis-72-pk</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-311240ML_62252b97-72f9-4a2e-8e96-4c94031b3b4e.png?v=1784721040</image:loc>
      <image:title>VOA Vial, Open Top, Clear Glass, with 24-414 Cap, 40 mL, Pre-Cleaned to EPA Standards, with Certificate of Analysis, 72/PK</image:title>
      <image:caption>VOA Vial, Open Top, Clear Glass, with 24-414 Cap, 40 mL, Pre-Cleaned to EPA Standards, with Certificate of Analysis, 72/PK</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-straight-sided-clear-glass-wide-mouth-level-3-epa-certified-4-oz-with-cap-24-cs-qec-3114-0004-representative-image</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-31140004.png?v=1784721041</image:loc>
      <image:title>Bottle, Straight Sided, Clear Glass, Wide-Mouth Level 3- EPA Certified, 4 oz., with Cap 24/CS, QEC, 3114-0004 (Representative Image)</image:title>
      <image:caption>Bottle, Straight Sided, Clear Glass, Wide-Mouth Level 3- EPA Certified, 4 oz., with Cap 24/CS, QEC, 3114-0004 (Representative Image)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-straight-sided-clear-glass-wide-mouth-level-3-epa-certified-9-oz-with-cap-24-cs-qec-3114-0009</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-31140009.png?v=1784721042</image:loc>
      <image:title>Bottle, Straight Sided, Clear Glass, Wide-Mouth Level 3- EPA Certified, 9 oz., with Cap 24/CS, QEC, 3114-0009</image:title>
      <image:caption>Bottle, Straight Sided, Clear Glass, Wide-Mouth Level 3- EPA Certified, 9 oz., with Cap 24/CS, QEC, 3114-0009</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-straight-sided-clear-glass-wide-mouth-level-3-epa-certified-16-oz-with-cap-12-cs-qec-3114-0016</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/QEC-31140016_55a32f75-7743-4e27-a04c-2cff219d297a.png?v=1784721044</image:loc>
      <image:title>Bottle, Straight Sided, Clear Glass, Wide-Mouth Level 3- EPA Certified, 16 oz., with Cap 12/CS, QEC, 3114-0016</image:title>
      <image:caption>Bottle, Straight Sided, Clear Glass, Wide-Mouth Level 3- EPA Certified, 16 oz., with Cap 12/CS, QEC, 3114-0016</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottles-glass-amber-boston-round-300-series-tfe-lined-polypropylene-cap-500-ml-precleaned-with-certificate</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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    <image:image>
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  <url>
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  <url>
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  <url>
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  <url>
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  <url>
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  <url>
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  <url>
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  </url>
  <url>
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  <url>
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      <image:caption>Bottle, Oblong Wide-Mouth HDPE, 16 oz., Level 3 EPA Certified, Polyethylene-Foam Lined Cap, 24/CS, QEC, 3212-0016</image:caption>
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  <url>
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  </url>
  <url>
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  </url>
  <url>
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  <url>
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    <changefreq>daily</changefreq>
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  <url>
    <loc>https://preiser.com/products/bottle-french-square-clear-glass-with-cap-16-oz-case-of-40</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
    <loc>https://preiser.com/products/cap-white-polypropylene-foam-lined-f-217-110-mm</loc>
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    <changefreq>daily</changefreq>
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  <url>
    <loc>https://preiser.com/products/qorpak%C2%AE-bottles-sample-2-oz-60-ml-clear-glass-boston-round-with-20-400-green-thermoset-f217-with-ptfe-lined-cap-attached-glc-01099</loc>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Qorpak Bottles, Sample, 2 oz (60 mL) Clear Glass Boston Round with 20-400 Green Thermoset F217 with PTFE Lined Cap Attached, 24/CS, Berlin Packaging, GLC-01099</image:caption>
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  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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      <image:title>Bottle, Boston Round Clear Glass, with Green Thermoset F217/PTFE Lined Cap (22-400), 4 oz, 24/CS</image:title>
      <image:caption>Bottle, Boston Round Clear Glass, with Green Thermoset F217/PTFE Lined Cap (22-400), 4 oz, 24/CS</image:caption>
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  <url>
    <loc>https://preiser.com/products/heavy-duty-chrome-plated-wire-shelf-for-quincy-bench-ovens-quincy-lab-inc-301-5000</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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  <url>
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  <url>
    <loc>https://preiser.com/products/large-capacity-digital-benchtop-oven-10-6-cu-ft-115-v-quincy-lab-31-350er</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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      <image:caption>Large Capacity Digital Benchtop Oven, 10.6 cu. ft., 115 V, Quincy Lab, 31-350ER</image:caption>
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  <url>
    <loc>https://preiser.com/products/bismuth-aa-standard-1-ml-1-mg-bi-1-000-ppm-bi-bi-in-3-hno3-100-ml-poly-bottle-ricca-chemical-abi1kn-100-8-un3264-p-g-iii</loc>
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      <image:caption>Bismuth AA Standard, 1 mL = 1 mg Bi (1,000 ppm Bi) Bi in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical ABI1KN-100 (8, UN3264, P.G. III)</image:caption>
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  </url>
  <url>
    <loc>https://preiser.com/products/borate-buffer-ph-9-5-for-ammonia-and-organic-nitrogen-analysis-500-ml-plastic-bottle-1040-16</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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      <image:caption>Borate Buffer, pH 9.5, for Ammonia and Organic Nitrogen Analysis, 500 mL, Plastic Bottle, 1040-16</image:caption>
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  </url>
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      <image:caption>Borate Buffer, pH 9.5, for Ammonia &amp; Organic Nitrogen, 32 oz. Bottle, Ricca 1040-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/borate-buffer-ph-9-5-for-ammonia-organic-nitrogen-4-l-plastic-bottle-ricca-r1040000-4a-non-regulated</loc>
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      <image:caption>Borate Buffer, pH 9.5, for Ammonia &amp; Organic Nitrogen, 4 L Plastic Bottle, Ricca R1040000-4A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/boric-acid-2-w-v-aqueous-solution-sold-by-each-each-poly-bottle-of-1-gallon-non-regulated</loc>
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      <image:caption>Boric Acid 2% w/v, Aqueous Solution (Sold by Each / Each = Poly Bottle of 1 Gallon) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/boric-acid-4-w-v-aqueous-with-bromocresol-green-methyl-red-indicator-4-l-plastic-bottle-ricca-r1070000-4a-non-regulated</loc>
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      <image:caption>Boric Acid, 4% (w/v) Aqueous with Bromocresol Green Methyl Red Indicator, 4 L Plastic Bottle, Ricca R1070000-4A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/boron-aa-standard-1-ml-1mg-b-1-000-ppm-b-h3bo3-in-h2o-100-ml-poly-bottle-ricca-chemical-ab1kw-100-non-regulated</loc>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1100-41.png?v=1784721088</image:loc>
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      <image:caption>Boron AA Standard, 1 mL=1mg B (1,000 ppm B) H3BO3 in H2O, 100 mL Poly Bottle, Ricca Chemical AB1KW-100 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/boron-aa-standard-1000-ppm-b-in-h2o-500-ml-ricca-rab1kw00-500n-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1100-43.png?v=1784721090</image:loc>
      <image:title>Boron AA Standard, 1000 ppm B in H2O, 500 mL, Ricca RAB1KW00-500N (Non-Regulated)</image:title>
      <image:caption>Boron AA Standard, 1000 ppm B in H2O, 500 mL, Ricca RAB1KW00-500N (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/boron-icp-standard-1-ml-1-mg-b-1-000-ppm-b-h3bo3-in-h2o-trace-nh4oh-sold-by-each-each-100-ml-poly-bottle</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1101-41_5e39bc45-7305-411b-992c-00de9ff82c23.png?v=1784721092</image:loc>
      <image:title>Boron ICP Standard, 1 mL=1 mg B (1,000 ppm B) H3BO3 in H2O / trace NH4OH (Sold by Each / Each = 100 mL Poly Bottle</image:title>
      <image:caption>Boron ICP Standard, 1 mL=1 mg B (1,000 ppm B) H3BO3 in H2O / trace NH4OH (Sold by Each / Each = 100 mL Poly Bottle</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/brij-35-30-w-v-aqueous-wetting-agent-32-oz-plastic-bottle-ricca-chemical-company-1145-32</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1145-1L_463097a6-996a-4a93-947e-74c1d21a4246.png?v=1785287189</image:loc>
      <image:title>Brij 35, 30% w/v Aqueous Wetting Agent, 32 oz Plastic Bottle, Ricca Chemical Company, 1145-32</image:title>
      <image:caption>Brij 35, 30% w/v Aqueous Wetting Agent, 32 oz Plastic Bottle, Ricca Chemical Company, 1145-32</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bromate-bromide-solution-0-100-normal-n-10-sold-by-each-each-amber-glass-bottle-of-1-l-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1170-44.png?v=1784721096</image:loc>
      <image:title>Bromate-Bromide Solution, 0.100 Normal (N/10) (Sold by Each / Each = Amber Glass Bottle of 1 L) (Non-Regulated)</image:title>
      <image:caption>Bromate-Bromide Solution, 0.100 Normal (N/10) (Sold by Each / Each = Amber Glass Bottle of 1 L) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bromide-standard-1000-ppm-bromine-120-ml-plastic-bottle-ricca-r1180000-120a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1180-41.png?v=1784721098</image:loc>
      <image:title>Bromide Standard, 1000 ppm Bromine, 120 mL Plastic Bottle, Ricca R1180000-120A (Non-Regulated)</image:title>
      <image:caption>Bromide Standard, 1000 ppm Bromine, 120 mL Plastic Bottle, Ricca R1180000-120A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bromide-standard-1-ml-1-mg-br-1000-ppm-br-500-ml-poly-bottle-ricca-chemical-1180-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1180-43.png?v=1784721100</image:loc>
      <image:title>Bromide Standard, 1 mL = 1 mg Br, 1000 ppm Br, 500 mL Poly Bottle, Ricca Chemical 1180-16 (Non-Regulated)</image:title>
      <image:caption>Bromide Standard, 1 mL = 1 mg Br, 1000 ppm Br, 500 mL Poly Bottle, Ricca Chemical 1180-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bromine-water-saturated-approximately-3-w-v-1-l-amber-glass-bottle-ricca-chemical-1195-32-8-6-1-un1744-p-g-i</loc>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1195-44.png?v=1784721102</image:loc>
      <image:title>Bromine Water, Saturated, approximately 3% (w/v), 1 L Amber Glass Bottle, Ricca Chemical 1195-32 (8 (6.1), UN1744, P.G. I)</image:title>
      <image:caption>Bromine Water, Saturated, approximately 3% (w/v), 1 L Amber Glass Bottle, Ricca Chemical 1195-32 (8 (6.1), UN1744, P.G. I)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bromocresol-green-methyl-red-mixed-indicator-120-ml-plastic-bottle-ricca-chemical-company-1215-4-not-regulated</loc>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1215-41.png?v=1784721104</image:loc>
      <image:title>Bromocresol Green-Methyl Red Mixed Indicator, 120 mL Plastic Bottle, Ricca Chemical Company, 1215-4 (Not Regulated)</image:title>
      <image:caption>Bromocresol Green-Methyl Red Mixed Indicator, 120 mL Plastic Bottle, Ricca Chemical Company, 1215-4 (Not Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1300-43.png?v=1784721106</image:loc>
      <image:title>Bromocresol Purple Indicator, 0.04% (w/v) Aqueous Solution, 500 mL Poly Bottle, Ricca Chemical 1300-16 (Non-Regulated)</image:title>
      <image:caption>Bromocresol Purple Indicator, 0.04% (w/v) Aqueous Solution, 500 mL Poly Bottle, Ricca Chemical 1300-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bromothymol-blue-indicator-0-04-w-v-aqueous-solution-500-ml-bottle-ricca-chemical-1375-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1375-16.png?v=1784721108</image:loc>
      <image:title>Bromothymol Blue Indicator, 0.04% (w/v) Aqueous Solution, 500 mL Bottle, Ricca Chemical 1375-16 (Non-Regulated)</image:title>
      <image:caption>Bromothymol Blue Indicator, 0.04% (w/v) Aqueous Solution, 500 mL Bottle, Ricca Chemical 1375-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bromothymol-blue-indicator-0-04-w-v-aqueous-solution-120-ml-plastic-bottle-ricca-chemical-1375-4-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1375-41.png?v=1784721110</image:loc>
      <image:title>Bromothymol Blue Indicator, 0.04% (w/v) Aqueous Solution, 120 mL Plastic Bottle, Ricca Chemical 1375-4 (Non-Regulated)</image:title>
      <image:caption>Bromothymol Blue Indicator, 0.04% (w/v) Aqueous Solution, 120 mL Plastic Bottle, Ricca Chemical 1375-4 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1501-1.png?v=1785287191</image:loc>
      <image:title>Buffer Solution, pH 4.00, Color Coded Red, Ricca, 4 L Plastic Bottle, 1501-1 (Non-Regulated)</image:title>
      <image:caption>Buffer Solution, pH 4.00, Color Coded Red, Ricca, 4 L Plastic Bottle, 1501-1 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/buffer-reference-standard-ph-6-86-q2599-0-01-at-25-degrees-c-500-ml-plastic-bottle-ricca-1540-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1540-43.png?v=1784721114</image:loc>
      <image:title>Buffer, Reference Standard, pH 6.86 Q2599± 0.01 at 25 Degrees C, 500 mL Plastic Bottle, Ricca 1540-16 (Non-Regulated)</image:title>
      <image:caption>Buffer, Reference Standard, pH 6.86 Q2599± 0.01 at 25 Degrees C, 500 mL Plastic Bottle, Ricca 1540-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/buffer-reference-standard-ph-7-00-0-01-at-25-degrees-c-colorless-500-ml-plastic-bottle-ricca-chemical-company-1550-16-non-regulated</loc>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1550-16.png?v=1785287193</image:loc>
      <image:title>Buffer, Reference Standard, pH 7.00 ± 0.01 at 25 Degrees C, Colorless, 500 mL Plastic Bottle, Ricca Chemical Company, 1550-16 (Non-Regulated)</image:title>
      <image:caption>Buffer, Reference Standard, pH 7.00 ± 0.01 at 25 Degrees C, Colorless, 500 mL Plastic Bottle, Ricca Chemical Company, 1550-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/buffer-reference-standard-ph-7-00-0-01-at-25-degrees-c-4-l-plastic-bottle-ricca-chemical-company-1550-1-non-regulated</loc>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1550-52.png?v=1784721118</image:loc>
      <image:title>Buffer, Reference Standard, pH 7.00 ± 0.01 at 25 Degrees C, 4 L Plastic Bottle, Ricca Chemical Company, 1550-1 (Non-Regulated)</image:title>
      <image:caption>Buffer, Reference Standard, pH 7.00 ± 0.01 at 25 Degrees C, 4 L Plastic Bottle, Ricca Chemical Company, 1550-1 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/buffer-reference-standard-ph-7-00-0-01-at-25-degrees-c-color-coded-yellow-4-l-plastic-bottle-ricca-1551-1-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1551-1.png?v=1785287196</image:loc>
      <image:title>Buffer, Reference Standard, pH 7.00 ± 0.01 at 25 Degrees C, Color Coded Yellow, 4 L Plastic Bottle, Ricca 1551-1 (Non-Regulated)</image:title>
      <image:caption>Buffer, Reference Standard, pH 7.00 ± 0.01 at 25 Degrees C, Color Coded Yellow, 4 L Plastic Bottle, Ricca 1551-1 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/buffer-reference-standard-ph-7-00-0-01-at-25-degrees-c-color-coded-yellow-500-ml-plastic-bottle-ricca-1551-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1551-43.png?v=1784721122</image:loc>
      <image:title>Buffer, Reference Standard, pH 7.00 ± 0.01 at 25 Degrees C, Color Coded Yellow, 500 mL Plastic Bottle, Ricca 1551-16 (Non-Regulated)</image:title>
      <image:caption>Buffer, Reference Standard, pH 7.00 ± 0.01 at 25 Degrees C, Color Coded Yellow, 500 mL Plastic Bottle, Ricca 1551-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/buffer-reference-standard-ph-7-00-0-01-at-25-degrees-c-color-coded-green-4-l-plastic-bottle-ricca-chemical-company-1551-4-1-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1551_4-1.png?v=1784721123</image:loc>
      <image:title>Buffer, Reference Standard, pH 7.00 ± 0.01 at 25 Degrees C, Color Coded Green, 4 L Plastic Bottle, Ricca Chemical Company, 1551.4-1 (Non-Regulated)</image:title>
      <image:caption>Buffer, Reference Standard, pH 7.00 ± 0.01 at 25 Degrees C, Color Coded Green, 4 L Plastic Bottle, Ricca Chemical Company, 1551.4-1 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/buffer-reference-standard-ph-8-00-0-01-at-25-degrees-c-1-l-plastic-bottle-ricca-chemical-company-1580-32-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1580-32.png?v=1784721124</image:loc>
      <image:title>Buffer, Reference Standard, pH 8.00 ± 0.01 at 25 Degrees C, 1 L Plastic Bottle, Ricca Chemical Company, 1580-32 (Non-Regulated)</image:title>
      <image:caption>Buffer, Reference Standard, pH 8.00 ± 0.01 at 25 Degrees C, 1 L Plastic Bottle, Ricca Chemical Company, 1580-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/buffer-reference-standard-ph-8-00-0-01-at-25-degrees-c-500-ml-plastic-bottle-ricca-chemical-company-1580-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1580-43_7ff8bd1a-eef5-4201-be7a-ef53ba5aa05e.png?v=1784778027</image:loc>
      <image:title>Buffer, Reference Standard, pH 8.00 ± 0.01 at 25 Degrees C, 500 mL Plastic Bottle, Ricca Chemical Company, 1580-16 (Non-Regulated)</image:title>
      <image:caption>Buffer, Reference Standard, pH 8.00 ± 0.01 at 25 Degrees C, 500 mL Plastic Bottle, Ricca Chemical Company, 1580-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/buffer-reference-standard-ph-9-00-0-01-at-25-degrees-c-1-l-plastic-bottle-ricca-chemical-company-1590-32-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1590-30.png?v=1784721127</image:loc>
      <image:title>Buffer, Reference Standard, pH 9.00 ± 0.01 at 25 Degrees C, 1 L Plastic Bottle, Ricca Chemical Company, 1590-32 (Non-Regulated)</image:title>
      <image:caption>Buffer, Reference Standard, pH 9.00 ± 0.01 at 25 Degrees C, 1 L Plastic Bottle, Ricca Chemical Company, 1590-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/buffer-reference-standard-ph-9-18-0-01-at-25-degrees-c-500-ml-plastic-bottle-ricca-chemical-company-1595-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1595-43.png?v=1784721129</image:loc>
      <image:title>Buffer, Reference Standard, pH 9.18 ± 0.01 at 25 Degrees C, 500 mL Plastic Bottle, Ricca Chemical Company, 1595-16 (Non-Regulated)</image:title>
      <image:caption>Buffer, Reference Standard, pH 9.18 ± 0.01 at 25 Degrees C, 500 mL Plastic Bottle, Ricca Chemical Company, 1595-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ph-10-buffer-solution-blue-sold-by-each-each-4-l-plastic-bottle-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1601-1.png?v=1785287198</image:loc>
      <image:title>pH 10 Buffer Solution, Blue (Sold by Each / Each = 4 L Plastic Bottle) (Non-Regulated)</image:title>
      <image:caption>pH 10 Buffer Solution, Blue (Sold by Each / Each = 4 L Plastic Bottle) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/buffer-solution-ph-10-00-color-coded-blue-500-ml-poly-bottle-ricca-1601-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1601-43.png?v=1784721133</image:loc>
      <image:title>Buffer Solution, pH 10.00, Color Coded Blue, 500 mL Poly Bottle, Ricca 1601-16 (Non-Regulated)</image:title>
      <image:caption>Buffer Solution, pH 10.00, Color Coded Blue, 500 mL Poly Bottle, Ricca 1601-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/buffer-reference-standard-ph-12-45-0-01-at-25-degrees-c-500-ml-plastic-bottle-ricca-chemical-company-1618-16</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1618-43.png?v=1784721134</image:loc>
      <image:title>Buffer, Reference Standard, pH 12.45 +/- 0.01 at 25 Degrees C, 500 mL Plastic Bottle, Ricca Chemical Company, 1618-16</image:title>
      <image:caption>Buffer, Reference Standard, pH 12.45 +/- 0.01 at 25 Degrees C, 500 mL Plastic Bottle, Ricca Chemical Company, 1618-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/buffer-reference-standard-ph-13-00-0-01-at-25-degrees-c-4-l-plastic-bottle-ricca-chemical-company-1625-1-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1625-1.png?v=1784721135</image:loc>
      <image:title>Buffer, Reference Standard, pH 13.00 +/- 0.01 at 25 Degrees C, 4 L Plastic Bottle, Ricca Chemical Company, 1625-1, (Non-Regulated)</image:title>
      <image:caption>Buffer, Reference Standard, pH 13.00 +/- 0.01 at 25 Degrees C, 4 L Plastic Bottle, Ricca Chemical Company, 1625-1, (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/buffer-reference-standard-ph-13-00-0-01-at-25-degrees-c-500-ml-plastic-bottle-ricca-1625-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1625-43_8ba20f1e-0f39-4f1f-844b-abf61b69ef6e.png?v=1784721137</image:loc>
      <image:title>Buffer, Reference Standard, pH 13.00 +/- 0.01 at 25 Degrees C, 500 mL Plastic Bottle, Ricca 1625-16 (Non-Regulated)</image:title>
      <image:caption>Buffer, Reference Standard, pH 13.00 +/- 0.01 at 25 Degrees C, 500 mL Plastic Bottle, Ricca 1625-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cadmium-aa-standard-1000-ppm-cadmium-100-ml-plastic-bottle-ricca-chemical-company-racd1kn0-100n-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1700-41.png?v=1785287199</image:loc>
      <image:title>Cadmium AA Standard, 1000 ppm Cadmium, 100 mL Plastic Bottle, Ricca Chemical Company, RACD1KN0-100N (8, UN3264, P.G. III)</image:title>
      <image:caption>Cadmium AA Standard, 1000 ppm Cadmium, 100 mL Plastic Bottle, Ricca Chemical Company, RACD1KN0-100N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cadmium-aa-standard-1-ml-1-mg-cd-1-000-ppm-cd-cd-in-3-hno3-500-ml-poly-bottle-ricca-chemical-acd1kn-500-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1700-43.png?v=1784721141</image:loc>
      <image:title>Cadmium AA Standard, 1 mL = 1 mg Cd (1,000 ppm Cd) Cd in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical ACD1KN-500 (8, UN3264, P.G. III)</image:title>
      <image:caption>Cadmium AA Standard, 1 mL = 1 mg Cd (1,000 ppm Cd) Cd in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical ACD1KN-500 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cadmium-icp-standard-1-ml-1-mg-cd-1-000-ppm-cd-cd-in-3-hno3-100-ml-plastic-bottle-ricca-chemical-pcd1kn-100-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1701-41.png?v=1784721143</image:loc>
      <image:title>Cadmium ICP Standard, 1 mL = 1 mg Cd (1,000 ppm Cd) Cd in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical PCD1KN-100 (8, UN3264, P.G. III))</image:title>
      <image:caption>Cadmium ICP Standard, 1 mL = 1 mg Cd (1,000 ppm Cd) Cd in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical PCD1KN-100 (8, UN3264, P.G. III))</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/calcium-chloride-2-75-w-v-aqueous-for-bod-500-ml-plastic-bottle-ricca-r1720000-500a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1720-43.png?v=1784721145</image:loc>
      <image:title>Calcium Chloride, 2.75% (w/v) Aqueous, for BOD, 500 mL Plastic Bottle, Ricca R1720000-500A (Non-Regulated)</image:title>
      <image:caption>Calcium Chloride, 2.75% (w/v) Aqueous, for BOD, 500 mL Plastic Bottle, Ricca R1720000-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/calcium-chloride-2-75-w-v-aqueous-for-bod-1-l-plastic-bottle-ricca-r1720000-1a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1720-44.png?v=1784721147</image:loc>
      <image:title>Calcium Chloride, 2.75% (w/v) Aqueous, for BOD, 1 L Plastic Bottle, Ricca R1720000-1A (Non-Regulated)</image:title>
      <image:caption>Calcium Chloride, 2.75% (w/v) Aqueous, for BOD, 1 L Plastic Bottle, Ricca R1720000-1A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/calcium-aa-standard-1000-ppm-calcium-100-ml-plastic-bottle-ricca-raca1kn0-100n-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1800-41_94105e58-4066-4790-8319-8c377088dbf8.png?v=1784721149</image:loc>
      <image:title>Calcium AA Standard, 1000 ppm Calcium, 100 mL Plastic Bottle, Ricca RACA1KN0-100N (8, UN3264, P.G. III)</image:title>
      <image:caption>Calcium AA Standard, 1000 ppm Calcium, 100 mL Plastic Bottle, Ricca RACA1KN0-100N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/calcium-aa-standard-1000-ppm-calcium-500-ml-plastic-bottle-ricca-raca1kn0-500n-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1800-43.png?v=1784721151</image:loc>
      <image:title>Calcium AA Standard, 1000 ppm Calcium, 500 mL Plastic Bottle, Ricca RACA1KN0-500N (8, UN3264, P.G. III)</image:title>
      <image:caption>Calcium AA Standard, 1000 ppm Calcium, 500 mL Plastic Bottle, Ricca RACA1KN0-500N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/calcium-icp-standard-1000-ppm-calcium-100-ml-plastic-bottle-ricca-rpca1kn0-100n-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1801-41.png?v=1784721153</image:loc>
      <image:title>Calcium ICP Standard, 1000 ppm Calcium, 100 mL Plastic Bottle, Ricca RPCA1KN0-100N (8, UN3264, P.G. III)</image:title>
      <image:caption>Calcium ICP Standard, 1000 ppm Calcium, 100 mL Plastic Bottle, Ricca RPCA1KN0-100N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/calcium-icp-standard-1-ml-1-mg-ca-1-000-ppm-ca-caco3-in-3-hno3-500-ml-poly-bottle-ricca-chemical-pca1kn-500-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1801-43.png?v=1784721155</image:loc>
      <image:title>Calcium ICP Standard, 1 mL = 1 mg Ca (1,000 ppm Ca) CaCO3 in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical PCA1KN-500 (8, UN3264, P.G. III)</image:title>
      <image:caption>Calcium ICP Standard, 1 mL = 1 mg Ca (1,000 ppm Ca) CaCO3 in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical PCA1KN-500 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/calcium-standard-10-000-ppm-ca-500-ml-plastic-bottle-ricca-chemical-company-1805-16-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1805-16.png?v=1784721157</image:loc>
      <image:title>Calcium Standard, 10,000 ppm Ca, 500 mL Plastic Bottle, Ricca Chemical Company, 1805-16 (8, UN3264, P.G. III)</image:title>
      <image:caption>Calcium Standard, 10,000 ppm Ca, 500 mL Plastic Bottle, Ricca Chemical Company, 1805-16 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/calcium-icp-standard-10-000-ppm-ca-in-5-hno3-100-ml-plastic-bottle-ricca-pca10kn-100-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1806-41.png?v=1784721159</image:loc>
      <image:title>Calcium ICP Standard, 10,000 ppm Ca in 5% HNO3, 100 mL Plastic Bottle, Ricca PCA10KN-100 (8, UN3264, P.G. III)</image:title>
      <image:caption>Calcium ICP Standard, 10,000 ppm Ca in 5% HNO3, 100 mL Plastic Bottle, Ricca PCA10KN-100 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/calmagite-indicator-0-1-w-v-120-ml-plastic-bottle-ricca-chemical-company-1830-4-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1830-41.png?v=1784721161</image:loc>
      <image:title>Calmagite Indicator, 0.1% (w/v), 120 mL Plastic Bottle, Ricca Chemical Company, 1830-4 (Non-Regulated)</image:title>
      <image:caption>Calmagite Indicator, 0.1% (w/v), 120 mL Plastic Bottle, Ricca Chemical Company, 1830-4 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/inorganic-carbon-standard-1-ml-1-mg-c-1000-ppm-c-apha-astm-epa-for-total-organic-carbon-toc-500-ml-amber-glass-bottle-ricca-chemical-company-1845-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1845-43.png?v=1784721163</image:loc>
      <image:title>Inorganic Carbon Standard, 1 mL = 1 mg C, 1000 ppm C, APHA/ASTM/EPA - for Total Organic Carbon (TOC), 500 mL Amber Glass Bottle, Ricca Chemical Company, 1845-16 (Non-Regulated)</image:title>
      <image:caption>Inorganic Carbon Standard, 1 mL = 1 mg C, 1000 ppm C, APHA/ASTM/EPA - for Total Organic Carbon (TOC), 500 mL Amber Glass Bottle, Ricca Chemical Company, 1845-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/carbon-standard-organic-1000-ppm-carbon-500-ml-glass-bottle-ricca-r1847000-500c-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1847-29_333ac513-f8af-4853-8459-14585c075c59.png?v=1784721165</image:loc>
      <image:title>Carbon Standard, Organic, 1000 ppm Carbon, 500 mL Glass Bottle, Ricca R1847000-500C (Non-Regulated)</image:title>
      <image:caption>Carbon Standard, Organic, 1000 ppm Carbon, 500 mL Glass Bottle, Ricca R1847000-500C (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/chloride-standard-1-ml-0-01-mg-cl-10-ppm-cl-500-ml-poly-bottle-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1942_1-16.png?v=1784721167</image:loc>
      <image:title>Chloride Standard, 1 mL = 0.01 mg Cl, 10 ppm Cl, 500 mL Poly Bottle, (Non-Regulated)</image:title>
      <image:caption>Chloride Standard, 1 mL = 0.01 mg Cl, 10 ppm Cl, 500 mL Poly Bottle, (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/chloride-standard-100-ppm-chloride-ion-500-ml-plastic-bottle-ricca-chemical-company-r1947000-500a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1947-16.png?v=1785287201</image:loc>
      <image:title>Chloride Standard, 100 ppm Chloride Ion, 500 mL Plastic Bottle, Ricca Chemical Company, R1947000-500A (Non-Regulated)</image:title>
      <image:caption>Chloride Standard, 100 ppm Chloride Ion, 500 mL Plastic Bottle, Ricca Chemical Company, R1947000-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/chloride-standard-100-ppm-chloride-ion-1-l-plastic-bottle-ricca-chemical-company-r1947000-1a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1947-32.png?v=1784721171</image:loc>
      <image:title>Chloride Standard, 100 ppm Chloride Ion, 1 L Plastic Bottle, Ricca Chemical Company, R1947000-1A (Non-Regulated)</image:title>
      <image:caption>Chloride Standard, 100 ppm Chloride Ion, 1 L Plastic Bottle, Ricca Chemical Company, R1947000-1A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/chloride-standard-500-ppm-chloride-ion-0-0141-normal-500-ml-plastic-bottle-ricca-chemical-company-1950-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1950-43.png?v=1784721172</image:loc>
      <image:title>Chloride Standard, 500 ppm Chloride Ion (0.0141 Normal), 500 mL Plastic Bottle, Ricca Chemical Company, 1950-16 (Non-Regulated)</image:title>
      <image:caption>Chloride Standard, 500 ppm Chloride Ion (0.0141 Normal), 500 mL Plastic Bottle, Ricca Chemical Company, 1950-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/chloride-standard-1000-ppm-chloride-ion-0-0282-normal-120-ml-plastic-bottle-ricca-chemical-1955-4-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1955-41.png?v=1784721175</image:loc>
      <image:title>Chloride Standard, 1000 ppm Chloride Ion (0.0282 Normal), 120 mL Plastic Bottle, Ricca Chemical 1955-4 (Non-Regulated)</image:title>
      <image:caption>Chloride Standard, 1000 ppm Chloride Ion (0.0282 Normal), 120 mL Plastic Bottle, Ricca Chemical 1955-4 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/chloride-standard-1000-ppm-chloride-500-ml-plastic-bottle-ricca-r1955000-500a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1955-43.png?v=1785287204</image:loc>
      <image:title>Chloride Standard, 1000 ppm Chloride, 500 mL Plastic Bottle, Ricca R1955000-500A (Non-Regulated)</image:title>
      <image:caption>Chloride Standard, 1000 ppm Chloride, 500 mL Plastic Bottle, Ricca R1955000-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/chloride-standard-100-000-ppm-chloride-ion-2-82-normal-500-ml-plastic-bottle-ricca-chemical-company-r1956000-500a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1956-16.png?v=1784721178</image:loc>
      <image:title>Chloride Standard, 100,000 ppm Chloride Ion (2.82 Normal), 500 mL Plastic Bottle, Ricca Chemical Company, R1956000-500A (Non-Regulated)</image:title>
      <image:caption>Chloride Standard, 100,000 ppm Chloride Ion (2.82 Normal), 500 mL Plastic Bottle, Ricca Chemical Company, R1956000-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/chloride-standard-0-100-normal-n-10-100-meq-l-nacl-4l-plastic-bottle-ricca-chemical-company-1960-1-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-1960-1.png?v=1784721180</image:loc>
      <image:title>Chloride Standard, 0.100 Normal (N/10), 100 mEq/L NaCl, 4L Plastic Bottle, Ricca Chemical Company, 1960-1 (Non-Regulated)</image:title>
      <image:caption>Chloride Standard, 0.100 Normal (N/10), 100 mEq/L NaCl, 4L Plastic Bottle, Ricca Chemical Company, 1960-1 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/chlorophenol-red-indicator-0-04-w-v-120-ml-plastic-bottle-ricca-chemical-company-2000-4-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2000-4.png?v=1784721182</image:loc>
      <image:title>Chlorophenol Red Indicator, 0.04% (w/v), 120 mL Plastic Bottle, Ricca Chemical Company, 2000-4 (Non-Regulated)</image:title>
      <image:caption>Chlorophenol Red Indicator, 0.04% (w/v), 120 mL Plastic Bottle, Ricca Chemical Company, 2000-4 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/chromate-standard-1000-ppm-chromate-120-ml-plastic-bottle-ricca-chemical-company-2070-4</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2070-4.png?v=1784721183</image:loc>
      <image:title>Chromate Standard, 1000 ppm Chromate, 120 mL Plastic Bottle, Ricca Chemical Company, 2070-4</image:title>
      <image:caption>Chromate Standard, 1000 ppm Chromate, 120 mL Plastic Bottle, Ricca Chemical Company, 2070-4</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/chromate-standard-1-ml-1-mg-sold-by-each-each-16-oz-poly-bottle-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2070-43.png?v=1784721184</image:loc>
      <image:title>Chromate Standard, 1 mL = 1 mg (Sold by Each / Each = 16  oz. Poly Bottle) (Non-Regulated)</image:title>
      <image:caption>Chromate Standard, 1 mL = 1 mg (Sold by Each / Each = 16  oz. Poly Bottle) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/hexavalent-chromium-standard-100-mg-l-cr6-100-ppm-cr6-120-ml-plastic-bottle-ricca-chemical-company-r2095000-120a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2095-4.png?v=1784721186</image:loc>
      <image:title>Hexavalent Chromium Standard, 100 mg/L Cr6+ (100 ppm Cr6+), 120 mL Plastic Bottle, Ricca Chemical Company, R2095000-120A (Non-Regulated)</image:title>
      <image:caption>Hexavalent Chromium Standard, 100 mg/L Cr6+ (100 ppm Cr6+), 120 mL Plastic Bottle, Ricca Chemical Company, R2095000-120A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/chromiumvi-aa-standard-1-ml-1-mg-cr-1-000-ppm-cr-k2cr2o7-in-h2o-100-ml-plastic-bottle-ricca-chemical-company-acr61kw-100-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2100-41.png?v=1784778036</image:loc>
      <image:title>Chromium(VI) AA Standard, 1 mL = 1 mg Cr (1,000 ppm Cr) K2Cr2O7 in H2O, 100 mL Plastic Bottle, Ricca Chemical Company, ACR61KW-100 (Non-Regulated)</image:title>
      <image:caption>Chromium(VI) AA Standard, 1 mL = 1 mg Cr (1,000 ppm Cr) K2Cr2O7 in H2O, 100 mL Plastic Bottle, Ricca Chemical Company, ACR61KW-100 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/chromiumvi-aa-standard-1-ml-1-mg-cr-1-000-ppm-cr-k2cr2o7-in-h2o-500-ml-plastic-bottle-ricca-chemical-company-acr61kw-500-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2100-43.png?v=1784721189</image:loc>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2101-41.png?v=1784721190</image:loc>
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      <image:caption>Chromium ICP Standard, 1 mL = 1 mg Cr (1,000 ppm Cr) Cr(NO3)3 in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical PCR1KN-100 (8, UN3264, P.G. III)</image:caption>
    </image:image>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2150-32.png?v=1784721193</image:loc>
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      <image:caption>Cleaning Solution, Chromic-Sulfuric Acid Solution for Cleaning Glassware, 1 L Amber Glass Bottle, Ricca R2150000-1C1 (8, UN1830, P.G. II)</image:caption>
    </image:image>
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  <url>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2200-41_6528713e-bde4-4a55-abef-0fad9bdf9450.png?v=1784721195</image:loc>
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      <image:caption>Cobalt AA Standard, 1000 ppm Cobalt, 100 mL Plastic Bottle, Ricca RACO1KN0-100N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
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      <image:caption>Cobalt AA Standard, 1 mL = 1 mg Co (1,000 ppm Co) Co in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical ACO1KN-500 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2201-41.png?v=1784721199</image:loc>
      <image:title>Cobalt ICP Standard, 1 mL = 1 mg Co (1,000 ppm Co) Co in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical PCO1KN-100 (8, UN3264, P.G. III)</image:title>
      <image:caption>Cobalt ICP Standard, 1 mL = 1 mg Co (1,000 ppm Co) Co in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical PCO1KN-100 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2201-43.png?v=1784721201</image:loc>
      <image:title>Cobalt ICP Standard, 1 mL = 1 mg Co (1,000 ppm Co) Co in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical PCO1KN-500 (8, UN3264, P.G. III)</image:title>
      <image:caption>Cobalt ICP Standard, 1 mL = 1 mg Co (1,000 ppm Co) Co in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical PCO1KN-500 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2210-43_c5e0ef6e-49d7-4dae-aabd-ac6d900f9ce8.png?v=1784721203</image:loc>
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      <image:caption>Cobaltous Chloride CS, USP / EP Red Primary Solution 1 mL=59.5mg CoCl2-6H20, 500 mL Bottle, Ricca Chemical Company, 2210-16 (Non-Regulated)</image:caption>
    </image:image>
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  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2230-43.png?v=1784721205</image:loc>
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      <image:caption>Color Standard, APHA / Hazen (Platinum-Cobalt), Color = 500, 500 mL Amber Glass Bottle, Ricca Chemical 2230-16 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2236-1.png?v=1784721207</image:loc>
      <image:title>Conductivity/TDS Standard, 10 uS/cm/4.7ppm as NaCl, 4 L Plastic Bottle, Ricca Chemical Company, 2236-1 (Non-Regulated)</image:title>
      <image:caption>Conductivity/TDS Standard, 10 uS/cm/4.7ppm as NaCl, 4 L Plastic Bottle, Ricca Chemical Company, 2236-1 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/conductivity-tds-standard-10-micromhos-cm-4-7-ppm-tds-500-ml-plastic-bottle-ricca-chemical-company-r2236000-500a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2236-16_78d24ce6-fb57-42df-9a70-8c08eacebf2d.png?v=1785287205</image:loc>
      <image:title>Conductivity/TDS Standard, 10 Micromhos/cm &amp; 4.7 ppm TDS, 500 mL Plastic Bottle, Ricca Chemical Company, R2236000-500A (Non-Regulated)</image:title>
      <image:caption>Conductivity/TDS Standard, 10 Micromhos/cm &amp; 4.7 ppm TDS, 500 mL Plastic Bottle, Ricca Chemical Company, R2236000-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2236-44_2256adda-42a1-4e02-8ca0-fcfc7e262514.png?v=1784721209</image:loc>
      <image:title>Conductivity Standard, 10 S/cm, 1 L Plastic Bottle, Ricca Chemical Company, 2236-32 (Non-Regulated)</image:title>
      <image:caption>Conductivity Standard, 10 S/cm, 1 L Plastic Bottle, Ricca Chemical Company, 2236-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2236_06-1_9730eb96-4cef-48df-b061-fe8328a0799f.png?v=1785287206</image:loc>
      <image:title>Conductivity/TDS Standard, 23.8S/cm, 11.2 ppm as NaCl, 4 L Poly Bottle, Ricca 2236.06-1 (Non-Regulated)</image:title>
      <image:caption>Conductivity/TDS Standard, 23.8S/cm, 11.2 ppm as NaCl, 4 L Poly Bottle, Ricca 2236.06-1 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2236_06-16.png?v=1784721212</image:loc>
      <image:title>Conductivity/TDS Standard, 23.8 S/cm (23.8 mho/cm) at 25 Degrees C, 11.2 ppm as NaCl , 500 mL Bottle, Ricca Chemical 2236.06-16 (Non-Regulated)</image:title>
      <image:caption>Conductivity/TDS Standard, 23.8 S/cm (23.8 mho/cm) at 25 Degrees C, 11.2 ppm as NaCl , 500 mL Bottle, Ricca Chemical 2236.06-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/conductivity-standard-23-8-%C2%B5s-cm-at-25-degrees-c-11-2-ppm-tds-as-nacl-ricca-chemical-company-2236-06-32</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2236_06-32.png?v=1784721213</image:loc>
      <image:title>Conductivity Standard, 23.8 µS/cm at 25 degrees C (11.2 ppm TDS as NaCl), Ricca Chemical Company, 2236.06-32</image:title>
      <image:caption>Conductivity Standard, 23.8 µS/cm at 25 degrees C (11.2 ppm TDS as NaCl), Ricca Chemical Company, 2236.06-32</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/conductivity-tds-standard-46-7-micromhos-cm-22-ppm-tds-500-ml-plastic-bottle-ricca-r2236070-500a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2236_07-16.png?v=1784721215</image:loc>
      <image:title>Conductivity/TDS Standard, 46.7 Micromhos/cm &amp; 22 ppm TDS, 500 mL Plastic Bottle, Ricca R2236070-500A (Non-Regulated)</image:title>
      <image:caption>Conductivity/TDS Standard, 46.7 Micromhos/cm &amp; 22 ppm TDS, 500 mL Plastic Bottle, Ricca R2236070-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2236_10-1.png?v=1784721217</image:loc>
      <image:title>Conductivity/TDS Standard, 50 S/cm (50 mho/cm) at 25 Degrees C, 23.6 ppm as NaCl, 4 L Plastic Bottle, Ricca Chemical Company, 2236.10-1 (Non-Regulated)</image:title>
      <image:caption>Conductivity/TDS Standard, 50 S/cm (50 mho/cm) at 25 Degrees C, 23.6 ppm as NaCl, 4 L Plastic Bottle, Ricca Chemical Company, 2236.10-1 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2236_10-43_e35eb0da-219c-4cad-bf95-f92e5cc57ae7.png?v=1784721218</image:loc>
      <image:title>Conductivity/TDS Standard, 50 S/cm (50 mho/cm) at 25 Degrees C, 23.6 ppm as NaCl, 500 mL Plastic Bottle, Ricca Chemical Company, 2236.10-16 (Non-Regulated)</image:title>
      <image:caption>Conductivity/TDS Standard, 50 S/cm (50 mho/cm) at 25 Degrees C, 23.6 ppm as NaCl, 500 mL Plastic Bottle, Ricca Chemical Company, 2236.10-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2236_14-1.png?v=1784721219</image:loc>
      <image:title>Conductivity/TDS Standard, 70 MicroS/cm (70 mho/cm) at 25 Degrees C, 33.0 ppm as NaCl, 4 L Plastic Bottle, Ricca Chemical 2236.14-1 (Non-Regulated)</image:title>
      <image:caption>Conductivity/TDS Standard, 70 MicroS/cm (70 mho/cm) at 25 Degrees C, 33.0 ppm as NaCl, 4 L Plastic Bottle, Ricca Chemical 2236.14-1 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2236_14-16.png?v=1784721221</image:loc>
      <image:title>Conductivity/TDS Standard, 70 S/cm (70 mho/cm) at 25 Degrees C, 33.0 ppm as NaCl, 500 mL Poly Bottle, Ricca Chemical 2236.14-16 (Non-Regulated)</image:title>
      <image:caption>Conductivity/TDS Standard, 70 S/cm (70 mho/cm) at 25 Degrees C, 33.0 ppm as NaCl, 500 mL Poly Bottle, Ricca Chemical 2236.14-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2236_25-16.png?v=1784721222</image:loc>
      <image:title>Conductivity/TDS Standard, 150 Micromhos/cm &amp; 71 ppm TDS, 500 mL Plastic Bottle, Ricca R2236250-500A (Non-Regulated)</image:title>
      <image:caption>Conductivity/TDS Standard, 150 Micromhos/cm &amp; 71 ppm TDS, 500 mL Plastic Bottle, Ricca R2236250-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2236_52-1_d1ca7445-b217-4826-8271-af77dd0fd2b3.png?v=1784721223</image:loc>
      <image:title>Conductivity/TDS Standard, 1413 mho/cm at 25 Degrees C, 4 L Poly Bottle, Ricca 2236.52-1 (Non-Regulated)</image:title>
      <image:caption>Conductivity/TDS Standard, 1413 mho/cm at 25 Degrees C, 4 L Poly Bottle, Ricca 2236.52-1 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2236_52-16_049835f3-5d7c-48e2-9ae4-9d0c78e387e0.png?v=1784721225</image:loc>
      <image:title>Conductivity/TDS Standard, 1413 Micromhos/cm &amp; 668 ppm TDS, 500 mL Plastic Bottle, Ricca R2236520-500A (Non-Regulated)</image:title>
      <image:caption>Conductivity/TDS Standard, 1413 Micromhos/cm &amp; 668 ppm TDS, 500 mL Plastic Bottle, Ricca R2236520-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2236_52-32_e74191fa-ca9d-478b-a7b4-6e18a859015d.png?v=1784721227</image:loc>
      <image:title>Conductivity Standard, 1413 MicroSiemens/cm at 25 Degrees C, 1 L Plastic Bottle, Ricca Chemical Company, 2236.52-32 (Non-Regulated)</image:title>
      <image:caption>Conductivity Standard, 1413 MicroSiemens/cm at 25 Degrees C, 1 L Plastic Bottle, Ricca Chemical Company, 2236.52-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2236_60-32.png?v=1784721228</image:loc>
      <image:title>Conductivity Standard, 250 MicroSiemens/cm at 25 Degrees C, 1 L Plastic Bottle, Ricca Chemical Company, 2236.60-32 (Non-Regulated)</image:title>
      <image:caption>Conductivity Standard, 250 MicroSiemens/cm at 25 Degrees C, 1 L Plastic Bottle, Ricca Chemical Company, 2236.60-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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      <image:caption>Conductivity/TDS Standard, 100 Micromhos/cm &amp; 47.2 ppm TDS, 500 mL Plastic Bottle, Ricca R2237000-500A (Non-Regulated)</image:caption>
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      <image:caption>Conductivity Standard, 445 MicroS/cm at 25 Degrees C (213 ppm TDS as NaCl), 500 mL Plastic Bottle, Ricca Chemical Company, 2240.45-16 (Non-Regulated)</image:caption>
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      <image:caption>Conductivity/TDS Standard, 500 S/cm (500 mho/cm) at 25 Degrees C, 240 ppm as NaCl, 1 L Poly Bottle, Ricca Chemical 2241-32 (Non-Regulated)</image:caption>
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      <image:caption>Conductivity/TDS Standard, 1 mS/cm (1000 mho/cm) at 25 Degree C, 495 ppm as NaCl (Poly Bottle of 1 L)</image:caption>
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      <image:caption>Conductivity/TDS Standard, 1000 Micromhos/cm &amp; 495 ppm TDS, 4 L Plastic Bottle, Ricca R2243000-4A (Non-Regulated)</image:caption>
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      <image:caption>Conductivity/TDS Standard, 2000 Micromhos/cm &amp; 1000ppm TDS, 500 mL Plastic Bottle, Ricca Chemical Company, R2244000-500A (Non-Regulated)</image:caption>
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      <image:caption>Conductivity Standard, 2000 uS/cm (1000 ppm TDS), 1 L Plastic Bottle, Ricca Chemical Company, R2244000-1A (Non-Regulated)</image:caption>
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      <image:caption>Conductivity Standard, 2500 MicroSiemens/cm at 25 Degrees C, 1 L Plastic Bottle, Ricca Chemical Company, 2244.25-32 (Non-Regulated)</image:caption>
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      <image:caption>Conductivity/TDS Standard, 3900 mS/cm (3900 mho/cm) at 25 Degrees C, 2012 ppm as NaCl, 500 mL Poly Bottle, Ricca Chemical 2244.39-16 (Non-Regulated)</image:caption>
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      <image:caption>Conductivity/TDS Standard, 3 mS/cm (3000 mho/cm) at 25 Degrees C, 1534 ppm as NaCl, 500 mL Poly Bottle, Ricca Chemical 2244.50-16 (Non-Regulated)</image:caption>
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      <image:caption>Conductivity Standard, 3000 uS/cm at 25 degrees C (1534 ppm TDS as NaCl)</image:caption>
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      <image:caption>Conductivity/TDS Standard, 5 mS/cm (5000 mho/cm) at 25 Degrees C, 2620 ppm as NaCl, 1 L Poly Bottle, Ricca Chemical 2245-32 (Non-Regulated)</image:caption>
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      <image:caption>Conductivity/TDS Standard, 5 mS/cm (5000 mho/cm) at 25 Degrees C, 2620 ppm as NaCl, 500 mL Poly Bottle, Ricca Chemical 2245-16 (Non-Regulated)</image:caption>
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      <image:caption>Conductivity Standard, 10,000mho/cm at 25 Degrees C, 4 L Plastic Bottle, Ricca Chemical Company, 2246-1 (Non-Regulated)</image:caption>
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      <image:caption>Conductivity Standard, 10,000mho/cm at 25 Degrees C, 500 mL Poly Bottle, Ricca 2246-16 (Non-Regulated)</image:caption>
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      <image:caption>Conductivity Standard, 10,000mho/cm at 25 Degrees C, 1 L Plastic Bottle, Ricca Chemical Company, 2246-32 (Non-Regulated)</image:caption>
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      <image:caption>Conductivity/TDS Standard, 20000 Micromhos/cm &amp; 11000ppm TDS, 500 mL Plastic Bottle, Ricca Chemical Company, R2247000-500A (Non-Regulated)</image:caption>
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      <image:caption>Conductivity/TDS Standard, 20000 Micromhos/cm &amp; 11000ppm TDS, 1 L Plastic Bottle, Ricca Chemical Company, R2247000-1A (Non-Regulated)</image:caption>
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      <image:caption>Conductivity/TDS Standard, 100 mS/cm (100,000 mho/cm) at 25 Degrees C, 65,750 ppm as NaCl, 500 mL Plastic Bottle, Ricca Chemical 2249-16 (Non-Regulated)</image:caption>
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  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2249-44.png?v=1784721266</image:loc>
      <image:title>Conductivity/TDS Standard, 100 mS/cm (100,000 mho/cm) at 25 Degrees C, 65,750 ppm as NaCl, 1 L Bottle, Ricca Chemical 2249-32 (Non-Regulated)</image:title>
      <image:caption>Conductivity/TDS Standard, 100 mS/cm (100,000 mho/cm) at 25 Degrees C, 65,750 ppm as NaCl, 1 L Bottle, Ricca Chemical 2249-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2300-41_0b2e06b8-6363-45df-8f6d-ca4090bb105f.png?v=1785287209</image:loc>
      <image:title>Copper AA Standard, 1000 ppm Copper, 100 mL Plastic Bottle, Ricca Chemical Company, RACU1KN0-100N (8, UN3264, P.G. III)</image:title>
      <image:caption>Copper AA Standard, 1000 ppm Copper, 100 mL Plastic Bottle, Ricca Chemical Company, RACU1KN0-100N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2300-43.png?v=1784721270</image:loc>
      <image:title>Copper AA Standard, 1 mL = 1 mg Cu (1,000 ppm Cu), Cu in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical ACU1KN-500 (8, UN3264, P.G. III)</image:title>
      <image:caption>Copper AA Standard, 1 mL = 1 mg Cu (1,000 ppm Cu), Cu in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical ACU1KN-500 (8, UN3264, P.G. III)</image:caption>
    </image:image>
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  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2301-41.png?v=1784721272</image:loc>
      <image:title>Copper ICP Standard, 1000ppm Copper, 100 mL Plastic Bottle, Ricca Chemical Company, RPCU1KN0-100N (8, UN3264, P.G. III)</image:title>
      <image:caption>Copper ICP Standard, 1000ppm Copper, 100 mL Plastic Bottle, Ricca Chemical Company, RPCU1KN0-100N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2305-16.png?v=1784721274</image:loc>
      <image:title>Copper Standard, 10,000 ppm Cu, 500 mL Plastic Bottle, 500 mL Plastic Bottle, Ricca Chemical Company, 2305-16 (Non-Regulated)</image:title>
      <image:caption>Copper Standard, 10,000 ppm Cu, 500 mL Plastic Bottle, 500 mL Plastic Bottle, Ricca Chemical Company, 2305-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2347-30.png?v=1784721277</image:loc>
      <image:title>Copper Sulfate, 0.0100 Molar (M/100), 1 L Plastic Bottle, Ricca Chemical Company, 2347-32 (Non-Regulated)</image:title>
      <image:caption>Copper Sulfate, 0.0100 Molar (M/100), 1 L Plastic Bottle, Ricca Chemical Company, 2347-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2495-16.png?v=1784721278</image:loc>
      <image:title>Cupric Sulfate CS, USP / EP Blue Primary Solution 1 mL = 62.4mg CuSO4.5H20, 500 mL Amber Glass Bottle, Ricca Chemical Company, 2495-16 (Non-Regulated)</image:title>
      <image:caption>Cupric Sulfate CS, USP / EP Blue Primary Solution 1 mL = 62.4mg CuSO4.5H20, 500 mL Amber Glass Bottle, Ricca Chemical Company, 2495-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2543-16.png?v=1784721280</image:loc>
      <image:title>Cyanide Standard, 1000 ppm CN¯, 500 mL Amber Plastic Bottle, Ricca Chemical Company, 2543-16 (Non-Regulated)</image:title>
      <image:caption>Cyanide Standard, 1000 ppm CN¯, 500 mL Amber Plastic Bottle, Ricca Chemical Company, 2543-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2543-41.png?v=1784721282</image:loc>
      <image:title>Cyanide Standard, 1000 ppm CN¯, 120 mL Amber Plastic Bottle, 120 mL Amber Plastic Bottle, Ricca R2543000-120B (Non-Regulated)</image:title>
      <image:caption>Cyanide Standard, 1000 ppm CN¯, 120 mL Amber Plastic Bottle, 120 mL Amber Plastic Bottle, Ricca R2543000-120B (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2550-44.png?v=1784721284</image:loc>
      <image:title>Digestion Reagent, with Mercury Catalyst, for Organic Nitrogen, 1 L Plastic Bottle, Ricca 2550-32 (8, UN2796, P.G. II)</image:title>
      <image:caption>Digestion Reagent, with Mercury Catalyst, for Organic Nitrogen, 1 L Plastic Bottle, Ricca 2550-32 (8, UN2796, P.G. II)</image:caption>
    </image:image>
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  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2550-52.png?v=1784721286</image:loc>
      <image:title>Digestion Reagent, with Mercury Catalyst, for Organic Nitrogen, 4 L Plastic Bottle, Ricca 2550-1 (8, UN2796, P.G. II)</image:title>
      <image:caption>Digestion Reagent, with Mercury Catalyst, for Organic Nitrogen, 4 L Plastic Bottle, Ricca 2550-1 (8, UN2796, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2590-16.png?v=1784721288</image:loc>
      <image:title>Diphenylcarbazide, 0.5% (w/v) in Acetone, 500 mL Amber Glass Bottle, Ricca Chemical Company, 2590-16 (3, UN1090, P.G. II)</image:title>
      <image:caption>Diphenylcarbazide, 0.5% (w/v) in Acetone, 500 mL Amber Glass Bottle, Ricca Chemical Company, 2590-16 (3, UN1090, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2610-41.png?v=1784721290</image:loc>
      <image:title>Diphenylcarbazone-Bromophenol Blue Mixed Indicator, for Chloride Determination, 120 mL Amber Glass Bottle, Ricca Chemical Company, 2610-4 (3, UN1987, PG. II)</image:title>
      <image:caption>Diphenylcarbazone-Bromophenol Blue Mixed Indicator, for Chloride Determination, 120 mL Amber Glass Bottle, Ricca Chemical Company, 2610-4 (3, UN1987, PG. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/diphenylcarbazone-bromophenol-blue-mixed-indicator-for-chloride-determination-500-ml-amber-glass-bottle-ricca-chemical-company-2610-16-3-un1987-pg-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2610-43.png?v=1784721292</image:loc>
      <image:title>Diphenylcarbazone-Bromophenol Blue Mixed Indicator, for Chloride Determination, 500 mL Amber Glass Bottle, Ricca Chemical Company, 2610-16 (3, UN1987, PG. II)</image:title>
      <image:caption>Diphenylcarbazone-Bromophenol Blue Mixed Indicator, for Chloride Determination, 500 mL Amber Glass Bottle, Ricca Chemical Company, 2610-16 (3, UN1987, PG. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/diphenylcarbazone-xylene-cyanol-mixed-indicator-not-acidifier-for-low-level-chloride-determination-500-ml-amber-glass-bottle-ricca-chemical-company-r2620000-500c-3-un1987-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2620-43.png?v=1784721294</image:loc>
      <image:title>Diphenylcarbazone-Xylene Cyanol Mixed Indicator (not acidifier), for Low Level Chloride Determination, 500 mL Amber Glass Bottle, Ricca Chemical Company, R2620000-500C, (3, UN1987, P.G. II)</image:title>
      <image:caption>Diphenylcarbazone-Xylene Cyanol Mixed Indicator (not acidifier), for Low Level Chloride Determination, 500 mL Amber Glass Bottle, Ricca Chemical Company, R2620000-500C, (3, UN1987, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/dpd-indicator-solution-for-residual-chlorine-analysis-500-ml-amber-glass-bottle-ricca-chemical-company-r2655000-500c-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2655-43.png?v=1784721296</image:loc>
      <image:title>DPD Indicator Solution, for ResiDual Chlorine Analysis, 500 mL Amber Glass Bottle, Ricca Chemical Company,R2655000-500C (Non-Regulated)</image:title>
      <image:caption>DPD Indicator Solution, for ResiDual Chlorine Analysis, 500 mL Amber Glass Bottle, Ricca Chemical Company,R2655000-500C (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/dpd-indicator-solution-for-residual-chlorine-analysis-1-l-amber-glass-bottle-ricca-chemical-company-r2655000-1c-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2655-44.png?v=1784721298</image:loc>
      <image:title>DPD Indicator Solution, for ResiDual Chlorine Analysis, 1 L Amber Glass Bottle, Ricca Chemical Company,R2655000-1C (Non-Regulated)</image:title>
      <image:caption>DPD Indicator Solution, for ResiDual Chlorine Analysis, 1 L Amber Glass Bottle, Ricca Chemical Company,R2655000-1C (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/edta-0-1-w-v-1-l-plastic-bottle-ricca-chemical-company-2661500-1a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2661500-1A_f4098e15-1c72-437e-a178-dc12939be26f.png?v=1784721299</image:loc>
      <image:title>EDTA, 0.1% (w/v), 1 L Plastic Bottle Ricca Chemical Company, 2661500-1A (Non-Regulated)</image:title>
      <image:caption>EDTA, 0.1% (w/v), 1 L Plastic Bottle Ricca Chemical Company, 2661500-1A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/edta-0-01m-0-0200n-4-l-plastic-bottle-ricca-chemical-company-2700-1-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2700-52.png?v=1784721301</image:loc>
      <image:title>EDTA 0.01M (0.0200N), 4 L Plastic Bottle, Ricca Chemical Company, 2700-1 (Non-Regulated)</image:title>
      <image:caption>EDTA 0.01M (0.0200N), 4 L Plastic Bottle, Ricca Chemical Company, 2700-1 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2700-55.png?v=1784721303</image:loc>
      <image:title>EDTA 0.01M (0.0200N), 20 L Cubitainer, Ricca Chemical Company, 2700-5 (Non-Regulated)</image:title>
      <image:caption>EDTA 0.01M (0.0200N), 20 L Cubitainer, Ricca Chemical Company, 2700-5 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/edta-titrant-0-100-molar-m-100-1-l-plastic-bottle-r2730000-1a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2730-30.png?v=1784721305</image:loc>
      <image:title>EDTA Titrant, 0.100 Molar (M/100), 1 L Plastic Bottle, R2730000-1A (Non-Regulated)</image:title>
      <image:caption>EDTA Titrant, 0.100 Molar (M/100), 1 L Plastic Bottle, R2730000-1A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/edta-titrant-0-100-molar-m-10-for-magnesium-testing-4-l-plastic-bottle-ricca-chemical-company-r2740000-4a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-2740-1.png?v=1784721307</image:loc>
      <image:title>EDTA Titrant, 0.100 Molar (M/10) for Magnesium Testing, 4 L Plastic Bottle, Ricca Chemical Company, R2740000-4A (Non-Regulated)</image:title>
      <image:caption>EDTA Titrant, 0.100 Molar (M/10) for Magnesium Testing, 4 L Plastic Bottle, Ricca Chemical Company, R2740000-4A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ferric-chloride-0-025-w-v-aqueous-solution-500-ml-plastic-bottle-ricca-chemical-company-r3100000-500a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3100-43.png?v=1784721309</image:loc>
      <image:title>Ferric Chloride, 0.025% (w/v) Aqueous Solution, 500 mL Plastic Bottle, Ricca Chemical Company, R3100000-500A (Non-Regulated)</image:title>
      <image:caption>Ferric Chloride, 0.025% (w/v) Aqueous Solution, 500 mL Plastic Bottle, Ricca Chemical Company, R3100000-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3100-44.png?v=1784721310</image:loc>
      <image:title>Ferric Chloride, 0.025% (w/v), 1 L Plastic Bottle, Ricca Chemical R3100000-1A (Non-Regulated)</image:title>
      <image:caption>Ferric Chloride, 0.025% (w/v), 1 L Plastic Bottle, Ricca Chemical R3100000-1A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ferroin-indicator-0-025-molar-phenanthroline-ferrous-sulfate-complex-120-ml-amber-glass-bottle-ricca-chemical-company-r3140000-120c-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3140-41.png?v=1784721312</image:loc>
      <image:title>Ferroin Indicator, 0.025 Molar Phenanthroline Ferrous Sulfate Complex, 120 mL Amber Glass Bottle, Ricca Chemical Company, R3140000-120C (Non-Regulated)</image:title>
      <image:caption>Ferroin Indicator, 0.025 Molar Phenanthroline Ferrous Sulfate Complex, 120 mL Amber Glass Bottle, Ricca Chemical Company, R3140000-120C (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/fluoride-standard-0-5-ppm-as-f-500-ml-500-ml-bottle-ricca-chemical-company-r3165500-500a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3165_5-16.png?v=1784721317</image:loc>
      <image:title>Fluoride Standard, 0.5 ppm as F, 500 mL, 500 mL Bottle, Ricca Chemical Company, R3165500-500A (Non-Regulated)</image:title>
      <image:caption>Fluoride Standard, 0.5 ppm as F, 500 mL, 500 mL Bottle, Ricca Chemical Company, R3165500-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/fluoride-standard-2-5ppm-as-f-500-ml-ricca-chemical-company-r3169000-500a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3169-16.png?v=1784721321</image:loc>
      <image:title>Fluoride Standard #2, 5ppm as F, 500 mL, Ricca Chemical Company, R3169000-500A (Non-Regulated)</image:title>
      <image:caption>Fluoride Standard #2, 5ppm as F, 500 mL, Ricca Chemical Company, R3169000-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/fluoride-standard-10-ppm-500-ml-plastic-bottle-500-ml-poly-bottle-ricca-chemical-company-r3170000-500a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3170-43.png?v=1784721323</image:loc>
      <image:title>Fluoride Standard, 10 ppm, 500 mL Plastic Bottle, 500 mL Poly Bottle, Ricca Chemical Company, R3170000-500A, (Non-Regulated)</image:title>
      <image:caption>Fluoride Standard, 10 ppm, 500 mL Plastic Bottle, 500 mL Poly Bottle, Ricca Chemical Company, R3170000-500A, (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/fluoride-standard-100-ppm-f-500-ml-plastic-bottle-500-ml-poly-bottle-ricca-chemical-company-r3171000-500a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3171-29.png?v=1784721325</image:loc>
      <image:title>Fluoride Standard, 100 ppm F, 500 mL Plastic Bottle, 500 mL Poly Bottle, Ricca Chemical Company, R3171000-500A (Non-Regulated)</image:title>
      <image:caption>Fluoride Standard, 100 ppm F, 500 mL Plastic Bottle, 500 mL Poly Bottle, Ricca Chemical Company, R3171000-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/fluoride-standard-1000-ppm-500-ml-poly-bottle-ricca-chemical-company-r3173000-500a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3173-43.png?v=1784721327</image:loc>
      <image:title>Fluoride Standard, 1000 ppm, 500 mL Poly Bottle, Ricca Chemical Company, R3173000-500A (Non-Regulated)</image:title>
      <image:caption>Fluoride Standard, 1000 ppm, 500 mL Poly Bottle, Ricca Chemical Company, R3173000-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/formaldehyde-10-v-v-buffered-ph-7-0-histological-fixative-20-l-cubitainer-ricca-chemical-company-r3190000-20f-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3190-55.png?v=1784721328</image:loc>
      <image:title>Formaldehyde, 10% (v/v), Buffered, pH 7.0, Histological Fixative, 20 L Cubitainer, Ricca Chemical Company, R3190000-20F (Non-Regulated)</image:title>
      <image:caption>Formaldehyde, 10% (v/v), Buffered, pH 7.0, Histological Fixative, 20 L Cubitainer, Ricca Chemical Company, R3190000-20F (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/gentian-violet-1-w-v-aqueous-solution-sold-by-each-each-poly-bottle-of-120-ml-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3230-41.png?v=1784721330</image:loc>
      <image:title>Gentian Violet, 1% (w/v) Aqueous Solution (Sold by Each / Each = Poly Bottle of 120 mL) (Non-Regulated)</image:title>
      <image:caption>Gentian Violet, 1% (w/v) Aqueous Solution (Sold by Each / Each = Poly Bottle of 120 mL) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/gold-aa-standard-1-ml-1-mg-au-1-000-ppm-au-au-in-3-hcl-100-ml-amber-glass-bottle-ricca-chemical-company-raau1kh0-100c-not-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3300-41.png?v=1784721331</image:loc>
      <image:title>Gold AA Standard, 1 mL = 1 mg Au (1,000 ppm Au), Au in 3% HCl, 100 mL Amber Glass Bottle, Ricca Chemical Company RAAU1KH0-100C (Not Regulated)</image:title>
      <image:caption>Gold AA Standard, 1 mL = 1 mg Au (1,000 ppm Au), Au in 3% HCl, 100 mL Amber Glass Bottle, Ricca Chemical Company RAAU1KH0-100C (Not Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/standard-hard-water-100-ppm-hardness-as-caco3-500-ml-ricca-r3482000-500a</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3482-01.png?v=1784721333</image:loc>
      <image:title>Standard Hard Water, 100 ppm Hardness as CaCO3, 500 mL Ricca, R3482000-500A</image:title>
      <image:caption>Standard Hard Water, 100 ppm Hardness as CaCO3, 500 mL Ricca, R3482000-500A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/hydrazine-standard-1-ml-0-1mg-100ppm-1-l-amber-glass-bottle-ricca-chemical-company-r3552000-1c-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3552-32.png?v=1785287210</image:loc>
      <image:title>Hydrazine Standard, 1 mL = 0.1mg, 100ppm, 1 L Amber Glass Bottle, Ricca Chemical Company, R3552000-1C, (Non-Regulated)</image:title>
      <image:caption>Hydrazine Standard, 1 mL = 0.1mg, 100ppm, 1 L Amber Glass Bottle, Ricca Chemical Company, R3552000-1C, (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/hydrazine-standard-1-ml-0-1-mg-n2h4-100-ppm-n2h4-500-ml-amber-glass-bottle-ricca-chemical-company-r3552000-500c-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3552-43.png?v=1784721337</image:loc>
      <image:title>Hydrazine Standard, 1 mL = 0.1 mg N2H4, 100 ppm N2H4, 500 mL Amber Glass Bottle, Ricca Chemical Company, R3552000-500C, (Non-Regulated)</image:title>
      <image:caption>Hydrazine Standard, 1 mL = 0.1 mg N2H4, 100 ppm N2H4, 500 mL Amber Glass Bottle, Ricca Chemical Company, R3552000-500C, (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/hydrochloric-acid-5-v-v-aqueous-solution-1-19-20-l-cubitainer-ricca-chemical-company-r3568000-20f-8-un1789-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3568-5.png?v=1784721339</image:loc>
      <image:title>Hydrochloric Acid, 5% (v/v) Aqueous Solution (1 + 19), 20 L Cubitainer, Ricca Chemical Company, R3568000-20F (8, UN1789, P.G. III)</image:title>
      <image:caption>Hydrochloric Acid, 5% (v/v) Aqueous Solution (1 + 19), 20 L Cubitainer, Ricca Chemical Company, R3568000-20F (8, UN1789, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/hydrochloric-acid-50-v-v-1-l-plastic-bottle-ricca-chemical-company-r3580000-1a-8-un1789-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3580-30.png?v=1784721341</image:loc>
      <image:title>Hydrochloric Acid, 50% (v/v), 1 L Plastic Bottle, Ricca Chemical Company, R3580000-1A (8, UN1789, P.G. II)</image:title>
      <image:caption>Hydrochloric Acid, 50% (v/v), 1 L Plastic Bottle, Ricca Chemical Company, R3580000-1A (8, UN1789, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/hydrochloric-acid-0-0100-normal-n-100-1-l-3590-32</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3590-32_93b8d323-c5d7-4bc4-8597-c32f5db3cf07.png?v=1784721343</image:loc>
      <image:title>Hydrochloric Acid, 0.0100 Normal (N/100), 1 L, 3590-32</image:title>
      <image:caption>Hydrochloric Acid, 0.0100 Normal (N/100), 1 L, 3590-32</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/hydrogen-sulfide-water-saturated-500-ml-amber-glass-bottle-ricca-chemical-company-r3850000-500c-6-1-un3287-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3850-16_e36de897-a024-4148-b22b-954cd8f6771d.png?v=1784721345</image:loc>
      <image:title>Hydrogen Sulfide Water, Saturated, 500 mL Amber Glass Bottle, Ricca Chemical Company, R3850000-500C (6.1, UN3287, P.G. III)</image:title>
      <image:caption>Hydrogen Sulfide Water, Saturated, 500 mL Amber Glass Bottle, Ricca Chemical Company, R3850000-500C (6.1, UN3287, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/iodide-iodate-0-003175-normal-n-315-1-l-amber-glass-bottle-ricca-chemical-company-r3960000-1c-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3960-32.png?v=1784721346</image:loc>
      <image:title>Iodide-Iodate, 0.003175 Normal (N/315), 1 L Amber Glass Bottle, Ricca Chemical Company, R3960000-1C (Non-Regulated)</image:title>
      <image:caption>Iodide-Iodate, 0.003175 Normal (N/315), 1 L Amber Glass Bottle, Ricca Chemical Company, R3960000-1C (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/iodine-0-025-normal-n-40-for-sulfide-4-l-amber-glass-bottle-ricca-chemical-company-r3975000-4c-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3975-1.png?v=1784721348</image:loc>
      <image:title>Iodine, 0.025 Normal (N/40), for Sulfide, 4 L Amber Glass Bottle, Ricca Chemical Company, R3975000-4C (Non-Regulated)</image:title>
      <image:caption>Iodine, 0.025 Normal (N/40), for Sulfide, 4 L Amber Glass Bottle, Ricca Chemical Company, R3975000-4C (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/iodine-0-025-normal-n-40-for-sulfide-1-l-amber-glass-bottle-ricca-chemical-company-r3975000-1c-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-3975-44.png?v=1784721351</image:loc>
      <image:title>Iodine, 0.025 Normal (N/40), for Sulfide, 1 L Amber Glass Bottle, Ricca Chemical Company, R3975000-1C (Non-Regulated)</image:title>
      <image:caption>Iodine, 0.025 Normal (N/40), for Sulfide, 1 L Amber Glass Bottle, Ricca Chemical Company, R3975000-1C (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/iodine-iodine-iodide-0-100-normal-n-10-1-l-amber-glass-bottle-ricca-chemical-company-r4000000-1c-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4000-44.png?v=1784721352</image:loc>
      <image:title>Iodine (Iodine-Iodide), 0.100 Normal (N/10), 1 L Amber Glass Bottle, Ricca Chemical Company, R4000000-1C (Non-Regulated)</image:title>
      <image:caption>Iodine (Iodine-Iodide), 0.100 Normal (N/10), 1 L Amber Glass Bottle, Ricca Chemical Company, R4000000-1C (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/iodine-monochloride-solution-wijs-for-iodine-absorption-number-of-fats-and-oils-1-l-amber-glass-bottle-ricca-chemical-company-r4110000-1c-83-un2920-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4110-32.png?v=1784721355</image:loc>
      <image:title>Iodine Monochloride Solution, Wijs, for Iodine Absorption Number of Fats and Oils, 1 L Amber Glass Bottle, Ricca Chemical Company, R4110000-1C (8(3), UN2920, P.G. II)</image:title>
      <image:caption>Iodine Monochloride Solution, Wijs, for Iodine Absorption Number of Fats and Oils, 1 L Amber Glass Bottle, Ricca Chemical Company, R4110000-1C (8(3), UN2920, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ferrous-iron-standard-1000-ppm-fe-ii-120-ml-amber-glass-bottle-ricca-chemical-company-r4198000-120c-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4198-4_c5233053-7119-4a50-915a-538f0de80dd9.png?v=1784721357</image:loc>
      <image:title>Ferrous Iron Standard, 1000 ppm Fe (II), 120 mL Amber Glass Bottle, Ricca Chemical Company, R4198000-120C (Non-Regulated)</image:title>
      <image:caption>Ferrous Iron Standard, 1000 ppm Fe (II), 120 mL Amber Glass Bottle, Ricca Chemical Company, R4198000-120C (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/iron-aa-standard-1000-ppm-iron-100-ml-plastic-bottle-ricca-rafe1kn0-100n-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4200-41_ebfdff31-bfa4-4f12-93d1-13cb3cbab87a.png?v=1784721359</image:loc>
      <image:title>Iron AA Standard, 1000 ppm Iron, 100 mL Plastic Bottle, Ricca RAFE1KN0-100N (Non-Regulated)</image:title>
      <image:caption>Iron AA Standard, 1000 ppm Iron, 100 mL Plastic Bottle, Ricca RAFE1KN0-100N (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/iron-aa-standard-1000-ppm-iron-in-3-hcl-500-ml-plastic-bottle-ricca-chemical-company-rafe1kn0-500n-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4200-43.png?v=1784721361</image:loc>
      <image:title>Iron AA Standard, 1000 ppm Iron in 3% HCl, 500 mL Plastic Bottle, Ricca Chemical Company, RAFE1KN0-500N (Non-Regulated)</image:title>
      <image:caption>Iron AA Standard, 1000 ppm Iron in 3% HCl, 500 mL Plastic Bottle, Ricca Chemical Company, RAFE1KN0-500N (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/iron-icp-standard-1000-ppm-iron-100-ml-plastic-bottle-ricca-rpfe1kn0-100n-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4201-41.png?v=1784721363</image:loc>
      <image:title>Iron ICP Standard, 1000 ppm Iron, 100 mL Plastic Bottle, Ricca RPFE1KN0-100N (8, UN3264, P.G. III)</image:title>
      <image:caption>Iron ICP Standard, 1000 ppm Iron, 100 mL Plastic Bottle, Ricca RPFE1KN0-100N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/iron-icp-standard-1-ml-1-mg-fe-1-000-ppm-fe-fe-in-3-hno3-500-ml-poly-bottle-ricca-chemical-rpfe1kn0-500n-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4201-43_cc220c9c-43db-42b6-9ee5-f520e84de6bb.png?v=1784721365</image:loc>
      <image:title>Iron ICP Standard, 1 mL = 1 mg Fe (1,000 ppm Fe), Fe in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical RPFE1KN0-500N (8, UN3264, P.G. III)</image:title>
      <image:caption>Iron ICP Standard, 1 mL = 1 mg Fe (1,000 ppm Fe), Fe in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical RPFE1KN0-500N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/lead-standard-1-ml-0-1-mg-pb-100-ppm-sold-by-each-each-16-oz-poly-bottle-non-regulated-4295-16</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4295-43.png?v=1784721367</image:loc>
      <image:title>Lead Standard, 1 mL = 0.1 mg Pb, 100 ppm (Sold by Each / Each = 16  oz. Poly Bottle) (Non-Regulated), 4295-16</image:title>
      <image:caption>Lead Standard, 1 mL = 0.1 mg Pb, 100 ppm (Sold by Each / Each = 16  oz. Poly Bottle) (Non-Regulated), 4295-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/lead-aa-standard-1000-ppm-lead-100-ml-plastic-bottle-ricca-rapbikn0-100n-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4300-41.png?v=1785287212</image:loc>
      <image:title>Lead AA Standard, 1000 ppm Lead, 100 mL Plastic Bottle, Ricca RAPBiKN0-100N (Non-Regulated)</image:title>
      <image:caption>Lead AA Standard, 1000 ppm Lead, 100 mL Plastic Bottle, Ricca RAPBiKN0-100N (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/lead-icp-standard-1-ml-1-mg-pb-1-000-ppm-pb-pb-in-3-hno3-100-ml-poly-bottle-ricca-chemical-ppb1kn-100-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4301-41.png?v=1784721371</image:loc>
      <image:title>Lead ICP Standard, 1 mL = 1 mg Pb (1,000 ppm Pb), Pb in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical PPB1KN-100 (8, UN3264, P.G. III)</image:title>
      <image:caption>Lead ICP Standard, 1 mL = 1 mg Pb (1,000 ppm Pb), Pb in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical PPB1KN-100 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/linear-alkylbenzene-sulfonate-las-standard-1-ml-1-mg-las-1000-ppm-las-120-ml-amber-glass-bottle-ricca-chemical-4350-4-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4350-4.png?v=1785287214</image:loc>
      <image:title>Linear Alkylbenzene Sulfonate (LAS) Standard, 1 mL = 1 mg LAS, 1000 ppm LAS, 120 mL Amber Glass Bottle, Ricca Chemical 4350-4 (Non-Regulated)</image:title>
      <image:caption>Linear Alkylbenzene Sulfonate (LAS) Standard, 1 mL = 1 mg LAS, 1000 ppm LAS, 120 mL Amber Glass Bottle, Ricca Chemical 4350-4 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/linear-alkylbenzene-sulfonate-las-solution-1000-ppm-las-120-ml-amber-glass-bottle-ricca-r4350000-120n-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4350-41.png?v=1784721375</image:loc>
      <image:title>Linear Alkylbenzene Sulfonate (LAS) Solution, 1000 ppm LAS, 120 mL Amber Glass Bottle, Ricca R4350000-120N (Non-Regulated)</image:title>
      <image:caption>Linear Alkylbenzene Sulfonate (LAS) Solution, 1000 ppm LAS, 120 mL Amber Glass Bottle, Ricca R4350000-120N (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/lithium-aa-standard-1-ml-1-mg-li-1-000-ppm-li-li2co3-in-3-hno3-100-ml-poly-bottle-ricca-chemical-ali1kn-100-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4400-41.png?v=1784721377</image:loc>
      <image:title>Lithium AA Standard, 1 mL = 1 mg Li (1,000 ppm Li), Li2CO3 in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical ALI1KN-100 (8, UN3264, P.G. III)</image:title>
      <image:caption>Lithium AA Standard, 1 mL = 1 mg Li (1,000 ppm Li), Li2CO3 in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical ALI1KN-100 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/lithium-aa-standard-1-ml-1-mg-500-ml-poly-bottle-ricca-ali1kn-500-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4400-43.png?v=1784721379</image:loc>
      <image:title>Lithium AA Standard, 1 mL = 1 mg, 500 mL Poly Bottle Ricca ALI1KN-500 (Non-Regulated)</image:title>
      <image:caption>Lithium AA Standard, 1 mL = 1 mg, 500 mL Poly Bottle Ricca ALI1KN-500 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/lithium-icp-standard-1-ml-1-mg-li-1-000-ppm-li-li2co3-in-3-hno3-120-ml-poly-bottle-ricca-chemical-pli1kn-100-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4401-41.png?v=1784721381</image:loc>
      <image:title>Lithium ICP Standard, 1 mL = 1 mg Li (1,000 ppm Li), Li2CO3 in 3% HNO3, 120 mL Poly Bottle, Ricca Chemical, PLI1KN-100 (8, UN3264, P.G. III)</image:title>
      <image:caption>Lithium ICP Standard, 1 mL = 1 mg Li (1,000 ppm Li), Li2CO3 in 3% HNO3, 120 mL Poly Bottle, Ricca Chemical, PLI1KN-100 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/magnesium-aa-standard-1-000-ppm-mg-in-3-hno3-100-ml-plastic-bottle-ricca-chemical-company-ramg1kn0-100n-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4500-41_496b4969-5972-4575-983c-62808bc6e718.png?v=1784721383</image:loc>
      <image:title>Magnesium AA Standard, 1,000 ppm Mg in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, RAMG1KN0-100N (8, UN3264, P.G. III)</image:title>
      <image:caption>Magnesium AA Standard, 1,000 ppm Mg in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, RAMG1KN0-100N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/magnesium-aa-standard-1-000-ppm-mg-in-3-hno3-500-ml-plastic-bottle-ricca-chemical-company-ramg1kn0-500n-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4500-43.png?v=1784721385</image:loc>
      <image:title>Magnesium AA Standard, 1,000 ppm Mg in 3% HNO3, 500 mL Plastic Bottle, Ricca Chemical Company, RAMG1KN0-500N (8, UN3264, P.G. III)</image:title>
      <image:caption>Magnesium AA Standard, 1,000 ppm Mg in 3% HNO3, 500 mL Plastic Bottle, Ricca Chemical Company, RAMG1KN0-500N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/magnesium-icp-standard-1-ml-1-mg-mg-1-000-ppm-mg-mgo-in-3-hno3-100-ml-plastic-bottle-ricca-chemical-company-rpmg1kn0-100n-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4501-41.png?v=1784721387</image:loc>
      <image:title>Magnesium ICP Standard, 1 mL = 1 mg Mg (1,000 ppm Mg), MgO in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, RPMG1KN0-100N (8, UN3264, P.G. III)</image:title>
      <image:caption>Magnesium ICP Standard, 1 mL = 1 mg Mg (1,000 ppm Mg), MgO in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, RPMG1KN0-100N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/magnesium-icp-standard-1-ml-1-mg-mg-1-000-ppm-mg-mgo-in-3-hno3-500-ml-plastic-bottle-ricca-chemical-company-rpmg1kn0-500n-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4501-43.png?v=1784721389</image:loc>
      <image:title>Magnesium ICP Standard, 1 mL = 1 mg Mg (1,000 ppm Mg), MgO in 3% HNO3, 500 mL Plastic Bottle, Ricca Chemical Company, RPMG1KN0-500N, (8, UN3264, P.G. III)</image:title>
      <image:caption>Magnesium ICP Standard, 1 mL = 1 mg Mg (1,000 ppm Mg), MgO in 3% HNO3, 500 mL Plastic Bottle, Ricca Chemical Company, RPMG1KN0-500N, (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/magnesium-icp-standard-10-000-ppm-mg-in-5-hno3-100-ml-plastic-bottle-ricca-chemical-company-rpmg1kn0-100n-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4506-41.png?v=1784721391</image:loc>
      <image:title>Magnesium ICP Standard, 10,000 ppm Mg in 5% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, RPMG1KN0-100N (8, UN3264, P.G. III)</image:title>
      <image:caption>Magnesium ICP Standard, 10,000 ppm Mg in 5% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, RPMG1KN0-100N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/magnesium-sulfate-2-25-w-v-aqueous-for-bod-500-ml-plastic-bottle-ricca-r4530000-500a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4530-43_f1364628-049b-42f8-8463-44f4ab9006f7.png?v=1784721393</image:loc>
      <image:title>Magnesium Sulfate, 2.25% (w/v) Aqueous, for BOD, 500 mL Plastic Bottle, Ricca R4530000-500A (Non-Regulated)</image:title>
      <image:caption>Magnesium Sulfate, 2.25% (w/v) Aqueous, for BOD, 500 mL Plastic Bottle, Ricca R4530000-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/magnesium-sulfate-2-25-w-v-aqueous-for-bod-1-l-plastic-bottle-ricca-r4530000-1a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4530-44.png?v=1784721395</image:loc>
      <image:title>Magnesium Sulfate, 2.25% (w/v) Aqueous, for BOD, 1 L Plastic Bottle, Ricca R4530000-1A (Non-Regulated)</image:title>
      <image:caption>Magnesium Sulfate, 2.25% (w/v) Aqueous, for BOD, 1 L Plastic Bottle, Ricca R4530000-1A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/manganese-aa-standard-1000-ppm-manganese-100-ml-plastic-bottle-ricca-ramn1kn0-100n-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4600-41.png?v=1785287216</image:loc>
      <image:title>Manganese AA Standard, 1000 ppm Manganese, 100 mL Plastic Bottle, Ricca RAMN1KN0-100N (8, UN3264, P.G. III)</image:title>
      <image:caption>Manganese AA Standard, 1000 ppm Manganese, 100 mL Plastic Bottle, Ricca RAMN1KN0-100N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/manganese-icp-standard-1-000-ppm-mn-in-3-hno3-100-ml-poly-bottle-ricca-chemical-pmn1kn-100-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4601-41_9b79b98e-82ed-44a0-931d-31b923ebdcad.png?v=1784721399</image:loc>
      <image:title>Manganese ICP Standard, 1,000 ppm Mn in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical PMN1KN-100 (8, UN3264, P.G. III)</image:title>
      <image:caption>Manganese ICP Standard, 1,000 ppm Mn in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical PMN1KN-100 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/manganese-icp-standard-1-000-ppm-mn-in-3-hno3-500-ml-poly-bottle-ricca-chemical-pmn1kn-500-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4601-43.png?v=1784721401</image:loc>
      <image:title>Manganese ICP Standard, 1,000 ppm Mn in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical PMN1KN-500 (8, UN3264, P.G. III)</image:title>
      <image:caption>Manganese ICP Standard, 1,000 ppm Mn in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical PMN1KN-500 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/manganous-sulfate-a-p-h-a-solution-364-g-l-500-ml-natural-poly-container-ricca-r4620000-500a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4620-43.png?v=1784721403</image:loc>
      <image:title>Manganous Sulfate A.P.H.A. Solution, 364 g/L, 500 mL Natural Poly Container, Ricca R4620000-500A (Non-Regulated)</image:title>
      <image:caption>Manganous Sulfate A.P.H.A. Solution, 364 g/L, 500 mL Natural Poly Container, Ricca R4620000-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/mercuric-nitrate-0-0141-normal-for-chloride-1-l-amber-glass-bottle-ricca-r4705000-1c-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4705-44_632f36af-40ea-484a-b291-d44bed8a3fb7.png?v=1784721405</image:loc>
      <image:title>Mercuric Nitrate, 0.0141 Normal, for Chloride, 1 L Amber Glass Bottle, Ricca R4705000-1C (Non-Regulated)</image:title>
      <image:caption>Mercuric Nitrate, 0.0141 Normal, for Chloride, 1 L Amber Glass Bottle, Ricca R4705000-1C (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/mercuric-nitrate-0-0250-normal-n-40-sold-by-each-each-amber-glass-bottle-of-1-l-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4715-32_c2363242-bdcb-43b8-8fd0-4aa85c6f0b6f.png?v=1784721407</image:loc>
      <image:title>Mercuric Nitrate, 0.0250 Normal (N/40) (Sold by Each / Each = Amber Glass Bottle of 1 L) (Non-Regulated)</image:title>
      <image:caption>Mercuric Nitrate, 0.0250 Normal (N/40) (Sold by Each / Each = Amber Glass Bottle of 1 L) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/mercuric-thiocyanate-stock-solution-4-17-g-l-in-methanol-for-chloride-1-l-amber-glass-bottle-ricca-r4785000-1c-3-un1993-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4785-32.png?v=1784721409</image:loc>
      <image:title>Mercuric Thiocyanate Stock Solution, 4.17 g/L in Methanol, for Chloride, 1 L Amber Glass Bottle, Ricca R4785000-1C (3, UN1993, P.G. II)</image:title>
      <image:caption>Mercuric Thiocyanate Stock Solution, 4.17 g/L in Methanol, for Chloride, 1 L Amber Glass Bottle, Ricca R4785000-1C (3, UN1993, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/mercury-aa-standard-1000-ppm-mercury-100-ml-plastic-bottle-ricca-rahg1kn0-100n-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4800-41.png?v=1784721411</image:loc>
      <image:title>Mercury AA Standard, 1000 ppm Mercury, 100 mL Plastic Bottle, Ricca RAHG1KN0-100N (Non-Regulated)</image:title>
      <image:caption>Mercury AA Standard, 1000 ppm Mercury, 100 mL Plastic Bottle, Ricca RAHG1KN0-100N (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/mercury-aa-standard-1000-ppm-mercury-500-ml-plastic-bottle-ricca-rahg1kn0-500n-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4800-43.png?v=1784721413</image:loc>
      <image:title>Mercury AA Standard, 1000 ppm Mercury, 500 mL Plastic Bottle, Ricca RAHG1KN0-500N (Non-Regulated)</image:title>
      <image:caption>Mercury AA Standard, 1000 ppm Mercury, 500 mL Plastic Bottle, Ricca RAHG1KN0-500N (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/mercury-icp-standard-1-ml-1-mg-hg-1-000-ppm-hg-hg-in-3-hno3-100-ml-poly-bottle-ricca-chemical-4801-4-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-4801-41_1dabae7c-83e1-461b-b7d2-436d54a29fd3.png?v=1784721414</image:loc>
      <image:title>Mercury ICP Standard, 1 mL = 1 mg Hg (1,000 ppm Hg), Hg in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical 4801-4 (8, UN3264, P.G. III)</image:title>
      <image:caption>Mercury ICP Standard, 1 mL = 1 mg Hg (1,000 ppm Hg), Hg in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical 4801-4 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/acetate-buffer-ph-4-0-for-residual-chlorine-analysis-1-l-plastic-bottle-ricca-chemical-company-55-32-8-un2790-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-50-44.png?v=1784721416</image:loc>
      <image:title>Acetate Buffer, pH 4.0, for Residual Chlorine Analysis, 1 L Plastic Bottle, Ricca Chemical Company, 55-32 (8, UN2790, P.G III)</image:title>
      <image:caption>Acetate Buffer, pH 4.0, for Residual Chlorine Analysis, 1 L Plastic Bottle, Ricca Chemical Company, 55-32 (8, UN2790, P.G III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/methyl-orange-indicator-aqueous-solution-0-1-w-v-500-ml-ricca-chemical-company-5000-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5000-43.png?v=1784721418</image:loc>
      <image:title>Methyl Orange Indicator, Aqueous Solution, 0.1% w/v, 500 mL, Ricca Chemical Company, 5000-16 (Non-Regulated)</image:title>
      <image:caption>Methyl Orange Indicator, Aqueous Solution, 0.1% w/v, 500 mL, Ricca Chemical Company, 5000-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/methyl-purple-indicator-solution-sold-by-each-each-500-ml-amber-glass-bottle-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5040-43_47ab7421-3e5a-4fc9-a35b-3cdc1fc48742.png?v=1784721419</image:loc>
      <image:title>Methyl Purple Indicator Solution (Sold by Each / Each = 500 mL Amber Glass Bottle) (Non-Regulated)</image:title>
      <image:caption>Methyl Purple Indicator Solution (Sold by Each / Each = 500 mL Amber Glass Bottle) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/methyl-red-0-02-w-v-aqueous-500-ml-plastic-bottle-ricca-r5050000-500a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5050-43.png?v=1784721422</image:loc>
      <image:title>Methyl Red, 0.02% (w/v) Aqueous, 500 mL Plastic Bottle, Ricca R5050000-500A (Non-Regulated)</image:title>
      <image:caption>Methyl Red, 0.02% (w/v) Aqueous, 500 mL Plastic Bottle, Ricca R5050000-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/methyl-red-methylene-blue-ts-indicator-sold-by-each-each-500-ml-plastic-bottle-3-un1987-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5090-16.png?v=1784721423</image:loc>
      <image:title>Methyl Red-Methylene Blue TS, Indicator (Sold by Each / Each = 500 mL Plastic Bottle) (3, UN1987, P.G. II)</image:title>
      <image:caption>Methyl Red-Methylene Blue TS, Indicator (Sold by Each / Each = 500 mL Plastic Bottle) (3, UN1987, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/mixed-indicator-solution-methyl-red-methylene-blue-120-ml-plastic-bottle-ricca-r5164000-120a-3-un1987-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5164-4.png?v=1784721425</image:loc>
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      <image:caption>Mixed Indicator Solution, Methyl Red-Methylene Blue, 120 mL Plastic Bottle, Ricca R5164000-120A (3, UN1987, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/molybdenum-aa-standard-1000-ppm-molybdenum-100-ml-plastic-bottle-ricca-ramo1kw0-100n-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5200-41.png?v=1784721427</image:loc>
      <image:title>Molybdenum AA Standard, 1000 ppm Molybdenum, 100 mL Plastic Bottle, Ricca RAMO1KW0-100N (Non-Regulated)</image:title>
      <image:caption>Molybdenum AA Standard, 1000 ppm Molybdenum, 100 mL Plastic Bottle, Ricca RAMO1KW0-100N (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/nickel-aa-standard-1000-ppm-100-ml-plastic-bottle-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5300-41_9fc58584-f189-4114-b5e7-789272223fc5.png?v=1784778050</image:loc>
      <image:title>Nickel AA Standard, 1000 ppm, 100 mL Plastic Bottle, (Non-Regulated)</image:title>
      <image:caption>Nickel AA Standard, 1000 ppm, 100 mL Plastic Bottle, (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/nickel-aa-standard-1000-ppm-nickel-500-ml-plastic-bottle-ricca-rani1kn0-500n-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5300-43.png?v=1784721431</image:loc>
      <image:title>Nickel AA Standard, 1000 ppm Nickel, 500 mL Plastic Bottle, Ricca RANI1KN0-500N (Non-Regulated)</image:title>
      <image:caption>Nickel AA Standard, 1000 ppm Nickel, 500 mL Plastic Bottle, Ricca RANI1KN0-500N (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/nickel-icp-standard-1-ml-1-mg-ni-1-000-ppm-ni-ni-in-3-hno3-100-ml-poly-bottle-ricca-chemical-5301-4-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5301-41.png?v=1784721433</image:loc>
      <image:title>Nickel ICP Standard, 1 mL = 1 mg Ni (1,000 ppm Ni), Ni in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical 5301-4 (8, UN3264, P.G. III)</image:title>
      <image:caption>Nickel ICP Standard, 1 mL = 1 mg Ni (1,000 ppm Ni), Ni in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical 5301-4 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/nitrate-standard-1000-ppm-nitrate-120-ml-plastic-bottle-ricca-r5307000-120a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5307-41.png?v=1784721435</image:loc>
      <image:title>Nitrate Standard, 1000 ppm Nitrate, 120 mL Plastic Bottle, Ricca R5307000-120A (Non-Regulated)</image:title>
      <image:caption>Nitrate Standard, 1000 ppm Nitrate, 120 mL Plastic Bottle, Ricca R5307000-120A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/nitrate-standard-16-oz-poly-bottle-ricca-5307-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5307-43.png?v=1784721437</image:loc>
      <image:title>Nitrate Standard, 16 oz. Poly Bottle Ricca 5307-16 (Non-Regulated)</image:title>
      <image:caption>Nitrate Standard, 16 oz. Poly Bottle Ricca 5307-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/nital-etchant-10-v-v-nitric-acid-in-reagent-alcohol-4-l-poly-bottle-3-8-un2924-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5323-1.png?v=1784721439</image:loc>
      <image:title>Nital Etchant,10% v/v Nitric Acid in Reagent Alcohol, 4 L Poly Bottle (3, (8), UN2924, P.G. II)</image:title>
      <image:caption>Nital Etchant,10% v/v Nitric Acid in Reagent Alcohol, 4 L Poly Bottle (3, (8), UN2924, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/alkaline-iodide-azide-alsterberg-formulation-for-dissolved-oxygen-do-analysis-500-ml-poly-bottle-8-un1824-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-540-43.png?v=1784721441</image:loc>
      <image:title>Alkaline-Iodide-Azide, Alsterberg Formulation, for Dissolved Oxygen (DO) Analysis, 500 mL Poly Bottle, (8, UN1824, P.G II)</image:title>
      <image:caption>Alkaline-Iodide-Azide, Alsterberg Formulation, for Dissolved Oxygen (DO) Analysis, 500 mL Poly Bottle, (8, UN1824, P.G II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ammonia-nitrogen-standard-1000ppm-n-1216-ppm-nh3-120-ml-plastic-bottle-ricca-chemical-company-r5455000-120a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5455-41_2c44938d-2b78-48e3-8a5c-181c17be03bd.png?v=1784721443</image:loc>
      <image:title>Ammonia Nitrogen Standard, 1000ppm N ((1216 ppm NH3), 120 mL Plastic Bottle, Ricca Chemical Company, R5455000-120A (Non-Regulated)</image:title>
      <image:caption>Ammonia Nitrogen Standard, 1000ppm N ((1216 ppm NH3), 120 mL Plastic Bottle, Ricca Chemical Company, R5455000-120A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/nitrogen-standard-as-nitrogen-1000-ppm-500-ml-plastic-bottle-ricca-r5455000-500a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5455-43.png?v=1785287218</image:loc>
      <image:title>Nitrogen Standard, as Nitrogen, 1000 ppm, 500 mL Plastic Bottle,  Ricca R5455000-500A (Non-Regulated)</image:title>
      <image:caption>Nitrogen Standard, as Nitrogen, 1000 ppm, 500 mL Plastic Bottle,  Ricca R5455000-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/nitrogen-standard-100-ppm-sold-by-each-each-bottle-of-16-oz-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5457-43_5c59dd35-5cfa-4295-a33f-bec3f83f36f3.png?v=1784721447</image:loc>
      <image:title>Nitrogen Standard, 100 ppm (Sold by Each / Each = Bottle of 16  oz.) (Non-Regulated)</image:title>
      <image:caption>Nitrogen Standard, 100 ppm (Sold by Each / Each = Bottle of 16  oz.) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/nitrogen-standard-as-nitrate-1000-ppm-nitrogen-120-ml-plastic-bottle-ricca-r5459000-120a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5459-4.png?v=1784721449</image:loc>
      <image:title>Nitrogen Standard, as Nitrate, 1000 ppm Nitrogen, 120 mL Plastic Bottle, Ricca R5459000-120A (Non-Regulated)</image:title>
      <image:caption>Nitrogen Standard, as Nitrate, 1000 ppm Nitrogen, 120 mL Plastic Bottle, Ricca R5459000-120A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/nitrogen-standard-1-ml-1-mg-n-1000-ppm-n-as-nitrate-500-ml-poly-bottle-ricca-5459-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5459-43.png?v=1784721451</image:loc>
      <image:title>Nitrogen Standard, 1 mL = 1 mg N, 1000 ppm N as Nitrate, 500 mL Poly Bottle, Ricca 5459-16 (Non-Regulated)</image:title>
      <image:caption>Nitrogen Standard, 1 mL = 1 mg N, 1000 ppm N as Nitrate, 500 mL Poly Bottle, Ricca 5459-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/nitrogen-standard-1-ml-0-25-mg-n-250-ppm-n-as-nitrite-821-ppm-no2-equivalent-to-1-ml-821-1-ppm-nitrite-no2-500-ml-poly-bottle-ricca-chemical-5460-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5460-16.png?v=1784721453</image:loc>
      <image:title>Nitrogen Standard, 1 mL = 0.25 mg N, 250 ppm N as Nitrite (821 ppm NO2-), Equivalent to 1 mL = 821.1 ppm Nitrite (NO2), 500 mL Poly Bottle, Ricca Chemical 5460-16 (Non-Regulated)</image:title>
      <image:caption>Nitrogen Standard, 1 mL = 0.25 mg N, 250 ppm N as Nitrite (821 ppm NO2-), Equivalent to 1 mL = 821.1 ppm Nitrite (NO2), 500 mL Poly Bottle, Ricca Chemical 5460-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/nitrite-standard-poly-bottle-of-16-oz-ricca-chemical-company-5460-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5460-43_08942af2-07e1-4edd-9b5e-89c681ee7f2f.png?v=1784721455</image:loc>
      <image:title>Nitrite Standard (Poly Bottle of 16  oz.), Ricca Chemical Company,  5460-16 (Non-Regulated)</image:title>
      <image:caption>Nitrite Standard (Poly Bottle of 16  oz.), Ricca Chemical Company,  5460-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/nitrogen-standard-as-nitrite-1000ppm-nitrogen-120-ml-plastic-bottle-ricca-r5461000-120a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5461-4.png?v=1784721457</image:loc>
      <image:title>Nitrogen Standard, as Nitrite, 1000ppm Nitrogen, 120 mL Plastic Bottle, Ricca R5461000-120A (Non-Regulated)</image:title>
      <image:caption>Nitrogen Standard, as Nitrite, 1000ppm Nitrogen, 120 mL Plastic Bottle, Ricca R5461000-120A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/orp-standard-200-mv-vs-ag-agcl-4m-kcl-sat-with-agcl-filling-solution-500-ml-amber-glass-bottle-ricca-chemical-5464-5-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5464_5-16.png?v=1784721459</image:loc>
      <image:title>ORP Standard, +200 mV vs. Ag/AgCl (4M KCl sat. with AgCl Filling Solution), 500 mL Amber Glass Bottle, Ricca Chemical 5464.5-16 (Non-Regulated)</image:title>
      <image:caption>ORP Standard, +200 mV vs. Ag/AgCl (4M KCl sat. with AgCl Filling Solution), 500 mL Amber Glass Bottle, Ricca Chemical 5464.5-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/orp-standard-600-mv-vs-ag-agcl-4m-kcl-sat-with-agcl-filling-solution-500-ml-amber-glass-bottle-ricca-chemical-5464-6-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5464_6-16.png?v=1784721462</image:loc>
      <image:title>ORP Standard, +600 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution), 500 mL Amber Glass Bottle, Ricca Chemical 5464.6-16 (Non-Regulated)</image:title>
      <image:caption>ORP Standard, +600 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution), 500 mL Amber Glass Bottle, Ricca Chemical 5464.6-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/palladium-aa-standard-1-ml-1-mg-pd-1-000-ppm-pd-pd-in-3-hcl-100-ml-poly-bottle-ricca-chemical-apd1kh-100-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5480-41.png?v=1784721463</image:loc>
      <image:title>Palladium AA Standard, 1 mL = 1 mg Pd (1,000 ppm Pd), Pd in 3% HCl, 100 mL Poly Bottle, Ricca Chemical APD1KH-100 (8, UN3264, P.G. III)</image:title>
      <image:caption>Palladium AA Standard, 1 mL = 1 mg Pd (1,000 ppm Pd), Pd in 3% HCl, 100 mL Poly Bottle, Ricca Chemical APD1KH-100 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/panpanicolaou-stain-ea-65-formula-couterstain-for-use-with-hematoxylin-stains-in-papanicolaou-staining-1-l-plastic-bottle-ricca-chemical-company-r5505000-1a-3-un1987-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5505-32.png?v=1784721465</image:loc>
      <image:title>Panpanicolaou Stain, EA-65 Formula, Couterstain for use with Hematoxylin Stains in Papanicolaou Staining, 1 L Plastic Bottle, Ricca Chemical Company, R5505000-1A, (3 UN1987, P.G. II)</image:title>
      <image:caption>Panpanicolaou Stain, EA-65 Formula, Couterstain for use with Hematoxylin Stains in Papanicolaou Staining, 1 L Plastic Bottle, Ricca Chemical Company, R5505000-1A, (3 UN1987, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phenolphthalein-0-5-w-v-in-50-v-v-alcohol-neutralized-4-l-plastic-bottle-ricca-r5600000-4a-3-un1987-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5600.png?v=1784721467</image:loc>
      <image:title>Phenolphthalein, 0.5% (w/v) in 50% (v/v) Alcohol, Neutralized, 4 L Plastic Bottle, Ricca R5600000-4A (3, UN1987, P.G. III)</image:title>
      <image:caption>Phenolphthalein, 0.5% (w/v) in 50% (v/v) Alcohol, Neutralized, 4 L Plastic Bottle, Ricca R5600000-4A (3, UN1987, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phenolphthalein-0-5-w-v-in-50-v-v-alcohol-neutralized-500-ml-plastic-bottle-ricca-r5600000-500a-3-un1987-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5600-43.png?v=1784721469</image:loc>
      <image:title>Phenolphthalein, 0.5% (w/v) in 50% (v/v) Alcohol, Neutralized, 500 mL Plastic Bottle, Ricca R5600000-500A (3, UN1987, P.G. III)</image:title>
      <image:caption>Phenolphthalein, 0.5% (w/v) in 50% (v/v) Alcohol, Neutralized, 500 mL Plastic Bottle, Ricca R5600000-500A (3, UN1987, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phenolphthalein-indicator-0-5-w-v-in-50-v-v-alcohol-neutralized-1-l-plastic-bottle-ricca-r5600000-1a-3-un1987-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5600-44_be8f3484-cc1a-4d96-af71-500b62492742.png?v=1784721471</image:loc>
      <image:title>Phenolphthalein Indicator, 0.5% (w/v) in 50% (v/v) Alcohol, Neutralized, 1 L Plastic Bottle, Ricca R5600000-1A (3, UN1987, P.G. III)</image:title>
      <image:caption>Phenolphthalein Indicator, 0.5% (w/v) in 50% (v/v) Alcohol, Neutralized, 1 L Plastic Bottle, Ricca R5600000-1A (3, UN1987, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phenolphthalein-indicator-1-w-v-in-70-v-v-alcohol-neutralized-1-l-poly-bottle-ricca-chemical-5618-32-3-un1987-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5618-32_9826e505-e0c5-4745-bbeb-39c1300b3d85.png?v=1784721473</image:loc>
      <image:title>Phenolphthalein Indicator, 1% (w/v) in 70% (v/v) Alcohol, Neutralized, 1 L Poly Bottle, Ricca Chemical 5618-32 (3, UN1987, P.G. II)</image:title>
      <image:caption>Phenolphthalein Indicator, 1% (w/v) in 70% (v/v) Alcohol, Neutralized, 1 L Poly Bottle, Ricca Chemical 5618-32 (3, UN1987, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phenolphthalein-indicator-1-w-v-in-95-v-v-alcohol-neutralized-1-l-poly-bottle-ricca-chemical-5620-32-3-un1987-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5620-32.png?v=1784721475</image:loc>
      <image:title>Phenolphthalein Indicator, 1% (w/v) in 95% (v/v) Alcohol, Neutralized, 1 L Poly Bottle, Ricca Chemical 5620-32 (3, UN1987, P.G. II)</image:title>
      <image:caption>Phenolphthalein Indicator, 1% (w/v) in 95% (v/v) Alcohol, Neutralized, 1 L Poly Bottle, Ricca Chemical 5620-32 (3, UN1987, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phenolphthalein-indicator-1-w-v-in-95-v-v-alcohol-neutralized-500-ml-poly-bottle-ricca-chemical-5620-16-3-un1987-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5620-43.png?v=1784721477</image:loc>
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      <image:caption>Phenolphthalein Indicator, 1% (w/v) in 95% (v/v) Alcohol, Neutralized, 500 mL Poly Bottle, Ricca Chemical 5620-16 (3, UN1987, P.G. II)</image:caption>
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  </url>
  <url>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5700-43.png?v=1784721481</image:loc>
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      <image:caption>Phenol Red Indicator Solution, 0.02% w/v, 16 oz Plastic Bottle, Ricca Chemical Company, 5700-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phenol-standard-1000-ppm-phenol-120-ml-glass-bottle-ricca-r5740000-120c-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5740-4_3962d807-f4a1-4fb4-94f0-c883e725e60a.png?v=1784721483</image:loc>
      <image:title>Phenol Standard, 1000 ppm Phenol, 120 mL Glass Bottle, Ricca R5740000-120C (Non-Regulated)</image:title>
      <image:caption>Phenol Standard, 1000 ppm Phenol, 120 mL Glass Bottle, Ricca R5740000-120C (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phenol-standard-1000-ppm-phenol-500-ml-glass-bottle-ricca-r5740000-500c-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5740-43_5875e165-32fc-4b9b-9142-a510ddc46846.png?v=1784721485</image:loc>
      <image:title>Phenol Standard, 1000 ppm Phenol, 500 mL Glass Bottle, Ricca R5740000-500C (Non-Regulated)</image:title>
      <image:caption>Phenol Standard, 1000 ppm Phenol, 500 mL Glass Bottle, Ricca R5740000-500C (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phenylarsine-oxide-pao-titrant-0-00564n-1-l-amber-glass-bottle-ricca-5750-32-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5750-44.png?v=1784721487</image:loc>
      <image:title>Phenylarsine Oxide (PAO) Titrant, 0.00564N, 1 L Amber Glass Bottle, Ricca 5750-32 (Non-Regulated)</image:title>
      <image:caption>Phenylarsine Oxide (PAO) Titrant, 0.00564N, 1 L Amber Glass Bottle, Ricca 5750-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phenylarsine-oxide-pao-titrant-0-00564n-4-l-amber-glass-bottle-ricca-5750-1-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5750-52.png?v=1784721489</image:loc>
      <image:title>Phenylarsine Oxide (PAO) Titrant, 0.00564N, 4 L Amber Glass Bottle, Ricca 5750-1 (Non-Regulated)</image:title>
      <image:caption>Phenylarsine Oxide (PAO) Titrant, 0.00564N, 4 L Amber Glass Bottle, Ricca 5750-1 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phosphate-buffer-ph-7-2-for-biochemical-oxygen-demand-bod-testing-500-ml-poly-bottle-ricca-chemical-5800-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5800-43.png?v=1784721491</image:loc>
      <image:title>Phosphate Buffer, pH 7.2, for Biochemical Oxygen Demand (BOD) Testing, 500 mL Poly Bottle, Ricca Chemical 5800-16 (Non-Regulated)</image:title>
      <image:caption>Phosphate Buffer, pH 7.2, for Biochemical Oxygen Demand (BOD) Testing, 500 mL Poly Bottle, Ricca Chemical 5800-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phosphate-buffer-solution-ph-7-2-sold-by-each-each-32-oz-poly-bottle-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5800-44_d9ce75b6-d56a-4be8-9e6b-74781151912b.png?v=1784721493</image:loc>
      <image:title>Phosphate Buffer Solution, pH 7.2 (Sold by Each / Each = 32  oz. Poly Bottle) (Non-Regulated)</image:title>
      <image:caption>Phosphate Buffer Solution, pH 7.2 (Sold by Each / Each = 32  oz. Poly Bottle) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phosphate-buffer-solution-sold-by-each-each-1-l-poly-bottle-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5805-32.png?v=1784721495</image:loc>
      <image:title>Phosphate Buffer Solution (Sold by Each / Each = 1 L Poly Bottle) (Non-Regulated)</image:title>
      <image:caption>Phosphate Buffer Solution (Sold by Each / Each = 1 L Poly Bottle) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phosphate-buffer-ph-7-for-water-reaction-in-aviation-fuel-ricca-chemical-company-5808-20-32</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5808_20-32.png?v=1784721497</image:loc>
      <image:title>Phosphate Buffer, pH 7, for Water Reaction in Aviation Fuel, Ricca Chemical Company 5808.20-32</image:title>
      <image:caption>Phosphate Buffer, pH 7, for Water Reaction in Aviation Fuel, Ricca Chemical Company 5808.20-32</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phosphate-standard-1-ml-0-05-mg-p-50-ppm-p-153-ppm-po43-sold-by-each-each-poly-bottle-of-500-ml-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5830-43.png?v=1784721501</image:loc>
      <image:title>Phosphate Standard, 1 mL = 0.05 mg P, 50 ppm P (153 ppm PO43-) (Sold by Each / Each = Poly Bottle of 500 mL) (Non-Regulated)</image:title>
      <image:caption>Phosphate Standard, 1 mL = 0.05 mg P, 50 ppm P (153 ppm PO43-) (Sold by Each / Each = Poly Bottle of 500 mL) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phosphate-standard-1-ml-1-mg-po43-1000-ppm-po43-326-ppm-p-120-ml-poly-bottle-ricca-chemical-5839-4-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5839-41_847b66a9-6345-453d-9091-6ef9344c1b2d.png?v=1784721503</image:loc>
      <image:title>Phosphate Standard, 1 mL = 1 mg PO43-, 1000 ppm PO43- (326 ppm P), 120 mL Poly Bottle, Ricca Chemical 5839-4 (Non-Regulated)</image:title>
      <image:caption>Phosphate Standard, 1 mL = 1 mg PO43-, 1000 ppm PO43- (326 ppm P), 120 mL Poly Bottle, Ricca Chemical 5839-4 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phosphate-standard-16-oz-poly-bottle-ricca-5839-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5839-43.png?v=1784721505</image:loc>
      <image:title>Phosphate Standard, 16 oz. Poly Bottle Ricca 5839-16 (Non-Regulated)</image:title>
      <image:caption>Phosphate Standard, 16 oz. Poly Bottle Ricca 5839-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phosphorous-aa-standard-as-phosphate-1000-ppm-phosphorous-100-ml-plastic-bottle-ricca-rap1kw00-100n-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5857-41.png?v=1784721506</image:loc>
      <image:title>Phosphorous AA Standard, as Phosphate, 1000 ppm Phosphorous, 100 mL Plastic Bottle, Ricca RAP1KW00-100N (Non-Regulated)</image:title>
      <image:caption>Phosphorous AA Standard, as Phosphate, 1000 ppm Phosphorous, 100 mL Plastic Bottle, Ricca RAP1KW00-100N (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/phosphorous-icp-standard-1000ppm-phosphorous-100-ml-plastic-bottle-ricca-rpp1kw00-100n</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5858-41.png?v=1784721508</image:loc>
      <image:title>Phosphorous ICP Standard, 1000ppm Phosphorous, 100 mL Plastic Bottle, Ricca RPP1KW00-100N</image:title>
      <image:caption>Phosphorous ICP Standard, 1000ppm Phosphorous, 100 mL Plastic Bottle, Ricca RPP1KW00-100N</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-acid-phthalate-300-mg-l-multi-purpose-standard-4-l-ricca-5837-3-1</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5867_3-1.png?v=1784721510</image:loc>
      <image:title>Potassium Acid Phthalate, 300 mg/L, Multi-Purpose Standard, 4 L, Ricca, 5837.3-1</image:title>
      <image:caption>Potassium Acid Phthalate, 300 mg/L, Multi-Purpose Standard, 4 L, Ricca, 5837.3-1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-acid-phthalate-multi-purpose-standard-sold-by-each-each-500-ml-plastic-bottle-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5867_3-16.png?v=1784721512</image:loc>
      <image:title>Potassium Acid Phthalate, Multi-Purpose Standard (Sold by Each / Each = 500 mL Plastic Bottle) (Non-Regulated)</image:title>
      <image:caption>Potassium Acid Phthalate, Multi-Purpose Standard (Sold by Each / Each = 500 mL Plastic Bottle) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-acid-phthalate-multi-purpose-standard-sold-by-each-each-1-l-plastic-bottle-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5867_3-32.png?v=1784721514</image:loc>
      <image:title>Potassium Acid Phthalate, Multi-Purpose Standard (Sold by Each / Each = 1 L Plastic Bottle) (Non-Regulated)</image:title>
      <image:caption>Potassium Acid Phthalate, Multi-Purpose Standard (Sold by Each / Each = 1 L Plastic Bottle) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-acid-phthalate-standard-1-ml-1-mg-chemical-oxygen-demand-cod-1000-ppm-cod-500-ml-bottle-ricca-chemical-5868-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5868-16.png?v=1784721516</image:loc>
      <image:title>Potassium Acid Phthalate Standard, 1 mL = 1 mg Chemical Oxygen Demand (COD), 1000 ppm COD, 500 mL Bottle, Ricca Chemical 5868-16 (Non-Regulated)</image:title>
      <image:caption>Potassium Acid Phthalate Standard, 1 mL = 1 mg Chemical Oxygen Demand (COD), 1000 ppm COD, 500 mL Bottle, Ricca Chemical 5868-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-acid-phthalate-0-0500-normal-n-20-ricca-5870-32</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5870-44.png?v=1784721518</image:loc>
      <image:title>Potassium Acid Phthalate, 0.0500 Normal (N/20), Ricca, 5870-32</image:title>
      <image:caption>Potassium Acid Phthalate, 0.0500 Normal (N/20), Ricca, 5870-32</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-chloride-conductivity-standard-500-micromhos-cm-1-l-plastic-bottle-ricca-r5887500-1a</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5887_5-32.png?v=1784721520</image:loc>
      <image:title>Potassium Chloride Conductivity Standard, 500 Micromhos/cm, 1 L Plastic Bottle, Ricca R5887500-1A</image:title>
      <image:caption>Potassium Chloride Conductivity Standard, 500 Micromhos/cm, 1 L Plastic Bottle, Ricca R5887500-1A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-chloride-conductivity-standard-717-micros-cm-1-l-plastic-bottle-ricca-chemical-company-5887-72-32-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5887_72-32_9d6ac4d1-4e2c-46b9-9774-7f29ffe7849e.png?v=1784721522</image:loc>
      <image:title>Potassium Chloride Conductivity Standard, 717 MicroS/cm, 1 L Plastic Bottle, Ricca Chemical Company, 5887.72-32 (Non-Regulated)</image:title>
      <image:caption>Potassium Chloride Conductivity Standard, 717 MicroS/cm, 1 L Plastic Bottle, Ricca Chemical Company, 5887.72-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-chloride-conductivity-standard-1000-micros-cm-500-ml-plastic-bottle-ricca-chemical-company-5888-01-16</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5888_01-16.png?v=1784721523</image:loc>
      <image:title>Potassium Chloride Conductivity Standard, 1000 MicroS/cm, 500 mL Plastic Bottle, Ricca Chemical Company, 5888.01-16</image:title>
      <image:caption>Potassium Chloride Conductivity Standard, 1000 MicroS/cm, 500 mL Plastic Bottle, Ricca Chemical Company, 5888.01-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-chloride-conductivity-standard-1000-micros-cm-in-a-1-l-plastic-bottle</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5888_01-32.png?v=1784721524</image:loc>
      <image:title>Potassium Chloride Conductivity Standard, 1000 microS/cm in a 1 L Plastic Bottle</image:title>
      <image:caption>Potassium Chloride Conductivity Standard, 1000 microS/cm in a 1 L Plastic Bottle</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-chloride-0-0100-molar-16-oz-poly-bottle-ricca-5890-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5890-43.png?v=1784721526</image:loc>
      <image:title>Potassium Chloride, 0.0100 Molar, 16 oz. Poly Bottle Ricca 5890-16 (Non-Regulated)</image:title>
      <image:caption>Potassium Chloride, 0.0100 Molar, 16 oz. Poly Bottle Ricca 5890-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-chloride-0-0100-molar-m-100-for-conductivity-1-l-plastic-bottle-ricca-r5890000-1a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5890-44.png?v=1784721529</image:loc>
      <image:title>Potassium Chloride, 0.0100 Molar (M/100) for Conductivity, 1 L Plastic Bottle, Ricca R5890000-1A (Non-Regulated)</image:title>
      <image:caption>Potassium Chloride, 0.0100 Molar (M/100) for Conductivity, 1 L Plastic Bottle, Ricca R5890000-1A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-chloride-0-100-molar-m-10-sold-by-each-each-poly-bottle-of-1-l-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5891-32.png?v=1784721531</image:loc>
      <image:title>Potassium Chloride, 0.100 Molar (M/10) (Sold by Each / Each = Poly Bottle of 1 L) (Non-Regulated)</image:title>
      <image:caption>Potassium Chloride, 0.100 Molar (M/10) (Sold by Each / Each = Poly Bottle of 1 L) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-chloride-reference-solution-b-12-856-ms-cm-12-856-mho-cm-at-25-degrees-c-0-1-molar-1-l-bottle-ricca-chemical-5894-32-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5894-44_8994d40b-223e-4c6f-b45b-ae7028397f28.png?v=1784721533</image:loc>
      <image:title>Potassium Chloride Reference Solution B, 12.856 mS/cm (12,856 mho/cm) at 25 Degrees C, 0.1 Molar, 1 L Bottle, Ricca Chemical 5894-32 (Non-Regulated)</image:title>
      <image:caption>Potassium Chloride Reference Solution B, 12.856 mS/cm (12,856 mho/cm) at 25 Degrees C, 0.1 Molar, 1 L Bottle, Ricca Chemical 5894-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-chloride-reference-solution-c-1408-8-micros-cm-1408-8-mho-cm-at-25-degrees-c-0-01-molar-1-l-plastic-bottle-ricca-chemical-company-5895-32-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5895-44.png?v=1784721535</image:loc>
      <image:title>Potassium Chloride Reference Solution C, 1408.8 MicroS/cm (1408.8 mho/cm) at 25 Degrees C, 0.01 Molar, 1 L Plastic Bottle, Ricca Chemical Company, 5895-32 (Non-Regulated)</image:title>
      <image:caption>Potassium Chloride Reference Solution C, 1408.8 MicroS/cm (1408.8 mho/cm) at 25 Degrees C, 0.01 Molar, 1 L Plastic Bottle, Ricca Chemical Company, 5895-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-chloride-3-molar-filling-solution-for-ross-ph-combination-and-reference-electrodes-500-ml-bottle-ricca-chemical-5899-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5899-16.png?v=1784721536</image:loc>
      <image:title>Potassium Chloride, 3 Molar, Filling Solution for ROSS pH Combination and Reference Electrodes, 500 mL Bottle, Ricca Chemical 5899-16 (Non-Regulated)</image:title>
      <image:caption>Potassium Chloride, 3 Molar, Filling Solution for ROSS pH Combination and Reference Electrodes, 500 mL Bottle, Ricca Chemical 5899-16 (Non-Regulated)</image:caption>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5899-41_21dbc039-582d-4bf8-82da-4ccd6f8948ce.png?v=1784721538</image:loc>
      <image:title>Potassium Chloride, 3 Molar, Filling Solution for ROSS pH Combination and Reference Electrodes, 120 mL Poly Bottle, Ricca Chemical 5899-4 (Non-Regulated)</image:title>
      <image:caption>Potassium Chloride, 3 Molar, Filling Solution for ROSS pH Combination and Reference Electrodes, 120 mL Poly Bottle, Ricca Chemical 5899-4 (Non-Regulated)</image:caption>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-5920-41.png?v=1784721540</image:loc>
      <image:title>Potassium Chloride, 4 Molar, Saturated with Silver Chloride, 120 mL Plastic Bottle, Ricca R5920000-120A (Non-Regulated)</image:title>
      <image:caption>Potassium Chloride, 4 Molar, Saturated with Silver Chloride, 120 mL Plastic Bottle, Ricca R5920000-120A (Non-Regulated)</image:caption>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-600-41.png?v=1784721542</image:loc>
      <image:title>Aluminum AA Standard, 1000ppm Aluminum, 100 mL Plastic Bottle, Ricca RAAL1KH0-100N (Non-Regulated)</image:title>
      <image:caption>Aluminum AA Standard, 1000ppm Aluminum, 100 mL Plastic Bottle, Ricca RAAL1KH0-100N (Non-Regulated)</image:caption>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-600-43.png?v=1784721543</image:loc>
      <image:title>Aluminum AA Standard, 1000ppm Al, in 3% HNO3, 500 mL Plastic Bottle, Ricca AAL1KHN-500 (8, UN3264, P.G. III)</image:title>
      <image:caption>Aluminum AA Standard, 1000ppm Al, in 3% HNO3, 500 mL Plastic Bottle, Ricca AAL1KHN-500 (8, UN3264, P.G. III)</image:caption>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-601-41.png?v=1784721545</image:loc>
      <image:title>Aluminum ICP Standard, 1 mL = 1 mg Al (1,000 ppm Al), Al in 3% HCl, 100 mL Poly Bottle, Ricca Chemical PAL1KH-100 (Non-Regulated)</image:title>
      <image:caption>Aluminum ICP Standard, 1 mL = 1 mg Al (1,000 ppm Al), Al in 3% HCl, 100 mL Poly Bottle, Ricca Chemical PAL1KH-100 (Non-Regulated)</image:caption>
    </image:image>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-601-43.png?v=1784721547</image:loc>
      <image:title>Aluminum ICP Standard, 1 mL = 1 mg Al (1,000 ppm Al), Al in 3% HCl, 500 mL Poly Bottle, Ricca Chemical PAL1KH-500 (Non-Regulated)</image:title>
      <image:caption>Aluminum ICP Standard, 1 mL = 1 mg Al (1,000 ppm Al), Al in 3% HCl, 500 mL Poly Bottle, Ricca Chemical PAL1KH-500 (Non-Regulated)</image:caption>
    </image:image>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-612-43_ef7402fd-4434-4835-9f22-06efc30862d2.png?v=1784721549</image:loc>
      <image:title>Ammonia Standard, 10 ppm NH3 (8.22 ppm N), 500 mL Plastic Bottle, Ricca Chemical Company, 612-16 (Non-Regulated)</image:title>
      <image:caption>Ammonia Standard, 10 ppm NH3 (8.22 ppm N), 500 mL Plastic Bottle, Ricca Chemical Company, 612-16 (Non-Regulated)</image:caption>
    </image:image>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-615-41.png?v=1784721550</image:loc>
      <image:title>Ammonia Standard, 1000 ppm Ammonia, 120 mL Plastic Bottle, Ricca R0615000-120A (Non-Regulated)</image:title>
      <image:caption>Ammonia Standard, 1000 ppm Ammonia, 120 mL Plastic Bottle, Ricca R0615000-120A (Non-Regulated)</image:caption>
    </image:image>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-615-43_1dc74219-8460-4ac3-bb50-d4a414b5047c.png?v=1784721551</image:loc>
      <image:title>Ammonia Standard, 1000 ppm Ammonia, 500 mL Plastic Bottle, Ricca R0615000-500A (Non-Regulated)</image:title>
      <image:caption>Ammonia Standard, 1000 ppm Ammonia, 500 mL Plastic Bottle, Ricca R0615000-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6190-16.png?v=1784721553</image:loc>
      <image:title>Potassium Hydroxide, 45% (w/w) Aqueous Solution, Analytical Reagent Grade, 500 mL Poly Bottle, Ricca Chemical 6190-16 (8, UN1814, P.G. II)</image:title>
      <image:caption>Potassium Hydroxide, 45% (w/w) Aqueous Solution, Analytical Reagent Grade, 500 mL Poly Bottle, Ricca Chemical 6190-16 (8, UN1814, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-625_4-32.png?v=1784721555</image:loc>
      <image:title>Ammonium Chloride, 10% (w/v), 1 L Plastic Bottle, Ricca Chemical Company, 625.4-32 (Non-Regulated)</image:title>
      <image:caption>Ammonium Chloride, 10% (w/v), 1 L Plastic Bottle, Ricca Chemical Company, 625.4-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6280-16_f4eadf3c-bc7d-4d94-b943-7e0caaf4ba03.png?v=1784721556</image:loc>
      <image:title>Potassium Iodate-Iodide, 0.0125 Normal (N/80), 1 mL = 0.5 mg SO32- (Sold by Each / Each = 500 mL Amber Glass Bottle (Non-Regulated)</image:title>
      <image:caption>Potassium Iodate-Iodide, 0.0125 Normal (N/80), 1 mL = 0.5 mg SO32- (Sold by Each / Each = 500 mL Amber Glass Bottle (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6280-44.png?v=1784721558</image:loc>
      <image:title>Potassium Iodate-Iodide, 0.0125 N, 1 L Poly Bottle Ricca 6280-32 (Non-Regulated)</image:title>
      <image:caption>Potassium Iodate-Iodide, 0.0125 N, 1 L Poly Bottle Ricca 6280-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-iodate-iodide-0-0125-n-4-l-poly-bottle-ricca-6280-1-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6280-52.png?v=1784721560</image:loc>
      <image:title>Potassium Iodate-Iodide, 0.0125 N, 4 L Poly Bottle Ricca 6280-1 (Non-Regulated)</image:title>
      <image:caption>Potassium Iodate-Iodide, 0.0125 N, 4 L Poly Bottle Ricca 6280-1 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-permanganate-0-0100-normal-n-100-1-l-ricca-6730-32</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6370-32.png?v=1784721563</image:loc>
      <image:title>Potassium Permanganate, 0.0100 Normal (N/100), 1 L, Ricca, 6730-32</image:title>
      <image:caption>Potassium Permanganate, 0.0100 Normal (N/100), 1 L, Ricca, 6730-32</image:caption>
    </image:image>
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  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6400-52.png?v=1784721565</image:loc>
      <image:title>Potassium Permanganate, 0.100 Normal (N/10), 0.0200 Molar (M/50) (Sold by Each / Each = 4 L Amber Glass Bottle  (Non-Regulated), Ricca, 6400-1</image:title>
      <image:caption>Potassium Permanganate, 0.100 Normal (N/10), 0.0200 Molar (M/50) (Sold by Each / Each = 4 L Amber Glass Bottle  (Non-Regulated), Ricca, 6400-1</image:caption>
    </image:image>
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  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6500-41.png?v=1784721566</image:loc>
      <image:title>Potassium AA Standard, 1000 ppm Potassium, 100 mL Plastic Bottle, Ricca RAK1KW00-100N (Non-Regulated)</image:title>
      <image:caption>Potassium AA Standard, 1000 ppm Potassium, 100 mL Plastic Bottle, Ricca RAK1KW00-100N (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6500-43.png?v=1784721568</image:loc>
      <image:title>Potassium AA Standard, 1000 ppm Potassium, 500 mL Plastic Bottle, Ricca RAK1KW00-500N (Non-Regulated)</image:title>
      <image:caption>Potassium AA Standard, 1000 ppm Potassium, 500 mL Plastic Bottle, Ricca RAK1KW00-500N (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/potassium-icp-standard-1-ml-1-mg-k-1-000-ppm-k-kno3-in-3-hno3-100-ml-poly-bottle-ricca-chemical-6501-4-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6501-41.png?v=1784721570</image:loc>
      <image:title>Potassium ICP Standard, 1 mL = 1 mg K (1,000 ppm K), KNO3 in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical 6501-4 (8, UN3264, P.G. III)</image:title>
      <image:caption>Potassium ICP Standard, 1 mL = 1 mg K (1,000 ppm K), KNO3 in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical 6501-4 (8, UN3264, P.G. III)</image:caption>
    </image:image>
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  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6501-43.png?v=1784721572</image:loc>
      <image:title>Potassium ICP Standard, 1 mL = 1 mg K (1,000 ppm K), KNO3 in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical PK1KN-500 (8, UN3264, P.G. III)</image:title>
      <image:caption>Potassium ICP Standard, 1 mL = 1 mg K (1,000 ppm K), KNO3 in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical PK1KN-500 (8, UN3264, P.G. III)</image:caption>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6580-1_40aff51f-02a7-4aa5-b6d7-e3468905279d.png?v=1784721575</image:loc>
      <image:title>Potassium Thiocyanate, 0.1 Normal (N/10), 4 L Plastic Bottle, Ricca R6580000-4A (Non-Regulated)</image:title>
      <image:caption>Potassium Thiocyanate, 0.1 Normal (N/10), 4 L Plastic Bottle, Ricca R6580000-4A (Non-Regulated)</image:caption>
    </image:image>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Pyridine, 10% (v/v), 1 L Poly Bottle, Ricca, R6584100-1A</image:title>
      <image:caption>Pyridine, 10% (v/v), 1 L Poly Bottle, Ricca, R6584100-1A</image:caption>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Selenium Standard, 1000 ppm Selenium, 100 mL Plastic Bottle, Ricca RASE1KW0-100N (Non-Regulated)</image:title>
      <image:caption>Selenium Standard, 1000 ppm Selenium, 100 mL Plastic Bottle, Ricca RASE1KW0-100N (Non-Regulated)</image:caption>
    </image:image>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6700-43.png?v=1784721581</image:loc>
      <image:title>Selenium AA Standard, 1 mL = 1 mg Se (1,000 ppm Se), SeO2 in H2O, 500 mL Bottle, Ricca Chemical ASE1KW-500 (Non-Regulated)</image:title>
      <image:caption>Selenium AA Standard, 1 mL = 1 mg Se (1,000 ppm Se), SeO2 in H2O, 500 mL Bottle, Ricca Chemical ASE1KW-500 (Non-Regulated)</image:caption>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Selenium ICP Standard, 1 mL = 1 mg Se (1,000 ppm Se), Se in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, RPSE1KN0-100N (8, UN3264, P.G. III)</image:title>
      <image:caption>Selenium ICP Standard, 1 mL = 1 mg Se (1,000 ppm Se), Se in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, RPSE1KN0-100N (8, UN3264, P.G. III)</image:caption>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6740-43.png?v=1784721584</image:loc>
      <image:title>Silica Standard, 500 mL Poly Bottle Ricca 6740-16 (Non-Regulated)</image:title>
      <image:caption>Silica Standard, 500 mL Poly Bottle Ricca 6740-16 (Non-Regulated)</image:caption>
    </image:image>
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  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6745-43_a8859ffa-d78c-4b2b-b21f-dcdd6d70a281.png?v=1784721586</image:loc>
      <image:title>Silica Standard, 1 mL = 0.1 mg (Bottle of 500 mL) (Non-Regulated)</image:title>
      <image:caption>Silica Standard, 1 mL = 0.1 mg (Bottle of 500 mL) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/silica-standard-1-ml-1-mg-sio2-1000-ppm-sio2-467-ppm-si-500-ml-poly-bottle-ricca-chemical-6750-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6750-43.png?v=1784721588</image:loc>
      <image:title>Silica Standard, 1 mL = 1 mg SiO2, 1000 ppm SiO2 (467 ppm Si), 500 mL Poly Bottle, Ricca Chemical 6750-16 (Non-Regulated)</image:title>
      <image:caption>Silica Standard, 1 mL = 1 mg SiO2, 1000 ppm SiO2 (467 ppm Si), 500 mL Poly Bottle, Ricca Chemical 6750-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/silicon-icp-standard-1-000-ppm-si-in-h20-100-ml-plastic-bottle-ricca-rasi1kw0-100n-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6800-41.png?v=1784721589</image:loc>
      <image:title>Silicon ICP Standard, 1,000 ppm Si in H20, 100 mL Plastic Bottle, Ricca RASI1KW0-100N (Non-Regulated)</image:title>
      <image:caption>Silicon ICP Standard, 1,000 ppm Si in H20, 100 mL Plastic Bottle, Ricca RASI1KW0-100N (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/silicon-icp-standard-1-000-ppm-si-in-h20-500-ml-plastic-bottle-ricca-chemical-company-rasi1kw0-500n-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6800-43.png?v=1784721591</image:loc>
      <image:title>Silicon ICP Standard, 1,000 ppm Si in H20, 500 mL Plastic Bottle, Ricca Chemical Company, RASI1KW0-500N (Non-Regulated)</image:title>
      <image:caption>Silicon ICP Standard, 1,000 ppm Si in H20, 500 mL Plastic Bottle, Ricca Chemical Company, RASI1KW0-500N (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/silicon-icp-standard-1-000-ppm-si-in-3-hno3-100-ml-plastic-bottle-ricca-chemical-company-rpsi1kn0-100n-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6801-41.png?v=1784721593</image:loc>
      <image:title>Silicon ICP Standard, 1,000 ppm Si in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, RPSI1KN0-100N, (8, UN3264, P.G. III)</image:title>
      <image:caption>Silicon ICP Standard, 1,000 ppm Si in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, RPSI1KN0-100N, (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/silicon-icp-standard-1-000-ppm-si-in-3-hno3-500-ml-plastic-bottle-ricca-chemical-company-rpsi1kn0-500n-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6801-43.png?v=1784721595</image:loc>
      <image:title>Silicon ICP Standard, 1,000 ppm Si in 3% HNO3, 500 mL Plastic Bottle, Ricca Chemical Company, RPSI1KN0-500N, (8, UN3264, P.G. III)</image:title>
      <image:caption>Silicon ICP Standard, 1,000 ppm Si in 3% HNO3, 500 mL Plastic Bottle, Ricca Chemical Company, RPSI1KN0-500N, (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/silver-nitrate-10-w-v-aqueous-solution-100-g-l-120-ml-amber-poly-bottle-ricca-chemical-6830-4-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6830-41.png?v=1784721597</image:loc>
      <image:title>Silver Nitrate, 10% (w/v) Aqueous Solution (100 g/L), 120 ml Amber Poly Bottle, Ricca Chemical 6830-4 (Non-Regulated)</image:title>
      <image:caption>Silver Nitrate, 10% (w/v) Aqueous Solution (100 g/L), 120 ml Amber Poly Bottle, Ricca Chemical 6830-4 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/silver-nitrate-0-0192-normal-sold-by-each-each-500-ml-amber-plastic-bottle-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6910-16_058d38ad-4162-4507-ba43-f5ba1c66dfdc.png?v=1784721599</image:loc>
      <image:title>Silver Nitrate, 0.0192 Normal (Sold by Each / Each = 500 mL Amber Plastic Bottle) (Non-Regulated)</image:title>
      <image:caption>Silver Nitrate, 0.0192 Normal (Sold by Each / Each = 500 mL Amber Plastic Bottle) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/silver-nitrate-0-0192-normal-for-cyanide-1-l-amber-plastic-bottle-ricca-r6910000-1b-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-6910-32.png?v=1784721603</image:loc>
      <image:title>Silver Nitrate, 0.0192 Normal, for Cyanide, 1 L Amber Plastic Bottle, Ricca R6910000-1B (Non-Regulated)</image:title>
      <image:caption>Silver Nitrate, 0.0192 Normal, for Cyanide, 1 L Amber Plastic Bottle, Ricca R6910000-1B (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ammonium-standard-1000-ppm-nh4-776-5-ppm-n-500-ml-plastic-bottle-ricca-693-16-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-693-43.png?v=1784721606</image:loc>
      <image:title>Ammonium Standard, 1000 ppm NH4+ (776.5 ppm N), 500 mL Plastic Bottle, Ricca 693-16 (Non-Regulated)</image:title>
      <image:caption>Ammonium Standard, 1000 ppm NH4+ (776.5 ppm N), 500 mL Plastic Bottle, Ricca 693-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/antimony-aa-standard-1000ppm-sb-in-20-hcl-100-ml-plastic-bottle-ricca-rasb1kh0-100n-8-un1789-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-700-41.png?v=1784778053</image:loc>
      <image:title>Antimony AA Standard, 1000ppm Sb in 20% HCl, 100 mL Plastic Bottle, Ricca RASB1KH0-100N (8, UN1789, P.G. II)</image:title>
      <image:caption>Antimony AA Standard, 1000ppm Sb in 20% HCl, 100 mL Plastic Bottle, Ricca RASB1KH0-100N (8, UN1789, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/silver-nitrate-0-141-normal-1-ml-5-mg-cl-sold-by-each-each-amber-poly-bottle-of-1-l</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7002-32.png?v=1784721614</image:loc>
      <image:title>Silver Nitrate, 0.141 Normal, 1 mL = 5 mg Cl (Sold by Each / Each = Amber Poly Bottle of 1 L)</image:title>
      <image:caption>Silver Nitrate, 0.141 Normal, 1 mL = 5 mg Cl (Sold by Each / Each = Amber Poly Bottle of 1 L)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/antimony-icp-standard-1000ppm-sb-in-h20-tartaric-acid-tr-hno3-100-ml-plastic-bottle-ricca-chemical-psb1kh-100-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-701-41.png?v=1784721615</image:loc>
      <image:title>Antimony ICP Standard, 1000ppm Sb in H20/Tartaric Acid/tr HNO3, 100 mL Plastic Bottle, Ricca Chemical PSB1KH-100 (Non-Regulated)</image:title>
      <image:caption>Antimony ICP Standard, 1000ppm Sb in H20/Tartaric Acid/tr HNO3, 100 mL Plastic Bottle, Ricca Chemical PSB1KH-100 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/silver-aa-standard-1000-ppm-sold-by-each-each-100-ml-amber-plastic-bottle-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7100-41_ee2acc54-4ba4-4e12-b973-70b465263021.png?v=1784721616</image:loc>
      <image:title>Silver AA Standard, 1000 ppm (Sold by Each / Each = 100 mL Amber Plastic Bottle) (Non-Regulated)</image:title>
      <image:caption>Silver AA Standard, 1000 ppm (Sold by Each / Each = 100 mL Amber Plastic Bottle) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/silver-icp-standard-1000ppm-silver-100-ml-plastic-bottle-ricca-rpag1kn0-100b-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7101-41.png?v=1784721618</image:loc>
      <image:title>Silver ICP Standard, 1000ppm Silver, 100 mL Plastic Bottle, Ricca RPAG1KN0-100B (8, UN3264, P.G. III)</image:title>
      <image:caption>Silver ICP Standard, 1000ppm Silver, 100 mL Plastic Bottle, Ricca RPAG1KN0-100B (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-bicarbonate-saturated-1-l-natural-poly-bottle-ricca-chemical-7148-32</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7148-32.png?v=1784721620</image:loc>
      <image:title>Sodium Bicarbonate Saturated, 1 L Natural Poly Bottle, Ricca Chemical, 7148-32</image:title>
      <image:caption>Sodium Bicarbonate Saturated, 1 L Natural Poly Bottle, Ricca Chemical, 7148-32</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-carbonate-10-w-v-aqueous-solution-sold-by-each-each-poly-bottle-of-1-l-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7160-32.png?v=1784721622</image:loc>
      <image:title>Sodium Carbonate, 10% (w/v) Aqueous Solution (Sold by Each / Each = Poly Bottle of 1 L) (Non-Regulated)</image:title>
      <image:caption>Sodium Carbonate, 10% (w/v) Aqueous Solution (Sold by Each / Each = Poly Bottle of 1 L) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-carbonate-0-0500-normal-n-20-1-ml-2-5-mg-caco3-1-l-poly-bottle-ricca-chemical-7185-32-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7185-44.png?v=1784721624</image:loc>
      <image:title>Sodium Carbonate, 0.0500 Normal (N/20), 1 mL = 2.5 mg CaCO3, 1 L Poly Bottle, Ricca Chemical 7185-32 (Non-Regulated)</image:title>
      <image:caption>Sodium Carbonate, 0.0500 Normal (N/20), 1 mL = 2.5 mg CaCO3, 1 L Poly Bottle, Ricca Chemical 7185-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-hydroxide-1-w-v-aqueous-solution-10-g-l-1-l-poly-bottle-ricca-chemical-7243-32-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7243-44.png?v=1784721626</image:loc>
      <image:title>Sodium Hydroxide, 1% (w/v) Aqueous Solution (10 g/L), 1 L Poly Bottle, Ricca Chemical 7243-32 (Non-Regulated)</image:title>
      <image:caption>Sodium Hydroxide, 1% (w/v) Aqueous Solution (10 g/L), 1 L Poly Bottle, Ricca Chemical 7243-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-hydroxide-50-4-l-poly-bottle-ricca-7290-1-8-un1824-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7290-52_f42b356d-02e0-47d8-99d8-67c7a6fa96dd.png?v=1785287220</image:loc>
      <image:title>Sodium Hydroxide, 50%, 4 L Poly Bottle Ricca 7290-1 (8, UN1824, P.G. II)</image:title>
      <image:caption>Sodium Hydroxide, 50%, 4 L Poly Bottle Ricca 7290-1 (8, UN1824, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-hydroxide-50-w-w-760-g-l-analytical-reagent-grade-500-ml-ricca-chemical-company-7291-16</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7291-29.png?v=1784721631</image:loc>
      <image:title>Sodium Hydroxide, 50% (w/w) (760 g/L), Analytical Reagent Grade, 500 mL, Ricca Chemical Company 7291-16</image:title>
      <image:caption>Sodium Hydroxide, 50% (w/w) (760 g/L), Analytical Reagent Grade, 500 mL, Ricca Chemical Company 7291-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-hydroxide-50-w-w-760-g-l-analytical-reagent-grade-4-l-ricca-chemical-company-7291-1</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7291-33.png?v=1784721633</image:loc>
      <image:title>Sodium Hydroxide, 50% (w/w) (760 g/L), Analytical Reagent Grade, 4 L, Ricca Chemical Company 7291-1</image:title>
      <image:caption>Sodium Hydroxide, 50% (w/w) (760 g/L), Analytical Reagent Grade, 4 L, Ricca Chemical Company 7291-1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-hydroxide-0-0100-n-32-oz-poly-bottle-ricca-7295-32-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7295-44.png?v=1784721635</image:loc>
      <image:title>Sodium Hydroxide, 0.0100 N, 32 oz. Poly Bottle Ricca 7295-32 (Non-Regulated)</image:title>
      <image:caption>Sodium Hydroxide, 0.0100 N, 32 oz. Poly Bottle Ricca 7295-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-hydroxide-0-0200-normal-n-50-1-ml-1-mg-caco3</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7300-52.png?v=1784721636</image:loc>
      <image:title>Sodium Hydroxide 0.0200 Normal (N/50)  1 mL = 1 mg CaCO3</image:title>
      <image:caption>Sodium Hydroxide 0.0200 Normal (N/50)  1 mL = 1 mg CaCO3</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-hydroxide-0-100-normal-n-10-ricca-7350-1</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7350-52.png?v=1784721638</image:loc>
      <image:title>Sodium Hydroxide, 0.100 Normal (N/10), Ricca, 7350-1</image:title>
      <image:caption>Sodium Hydroxide, 0.100 Normal (N/10), Ricca, 7350-1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-hydroxide-0-250-normal-n-4-20-l-cubitainer-ricca-r7370000-20f-8-un1824-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7370-55.png?v=1784721640</image:loc>
      <image:title>Sodium Hydroxide, 0.250 Normal (N/4), 20 L Cubitainer, Ricca R7370000-20F {8, UN1824, P.G. III)</image:title>
      <image:caption>Sodium Hydroxide, 0.250 Normal (N/4), 20 L Cubitainer, Ricca R7370000-20F {8, UN1824, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-hydroxide-1-0-n-1-l-poly-bottle-ricca-7450-32-8-un1824-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7450-44.png?v=1784721642</image:loc>
      <image:title>Sodium Hydroxide, 1.0 N, 1 L Poly Bottle Ricca 7450-32 (8, UN1824, P.G. III)</image:title>
      <image:caption>Sodium Hydroxide, 1.0 N, 1 L Poly Bottle Ricca 7450-32 (8, UN1824, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-hydroxide-1-00-normal-20-l-cubitainer-ricca-7450-5</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7450-5_84fbcbb3-c7c5-4c1a-8edc-6fe90305e56d.png?v=1784721644</image:loc>
      <image:title>Sodium Hydroxide, 1.00 Normal, 20 L Cubitainer, Ricca, 7450-5</image:title>
      <image:caption>Sodium Hydroxide, 1.00 Normal, 20 L Cubitainer, Ricca, 7450-5</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-hydroxide-10-0-n-1-l-poly-bottle-ricca-7470-32-8-un1824-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-7470-44.png?v=1784721646</image:loc>
      <image:title>Sodium Hydroxide, 10.0 N, 1 L Poly Bottle Ricca 7470-32 (8, UN1824, P.G. II)</image:title>
      <image:caption>Sodium Hydroxide, 10.0 N, 1 L Poly Bottle Ricca 7470-32 (8, UN1824, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
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      <image:caption>Sodium ICP Standard, 1 mL = 1 mg Na (1,000 ppm Na), Na2CO3 in 3% HNO3, 125 mL Poly Bottle,  Ricca Chemical PNA1KN-100 (8, UN3264, P.G. III)</image:caption>
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      <image:caption>Sodium ICP Standard, 1 mL = 1 mg Na (1,000 ppm Na), Na2CO3 in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical PNA1KN-500 (8, UN3264, P.G. III)</image:caption>
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      <image:caption>Sodium Thiosulfate, 0.01 N, 32 oz. Poly Bottle Ricca 7890-32 (Non-Regulated)</image:caption>
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      <image:caption>Sodium Thiosulfate, 0.100 N, 1 L Poly Bottle Ricca 7950-32 (Non-Regulated)</image:caption>
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      <image:caption>Arsenic AA Standard, 1000 ppm As in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company RAAS1KN0-100N (8, UN3264, P.G. III)</image:caption>
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      <image:caption>Starch Indicator, 0.5% (w/v), Mercury Free, for Iodometric Titrations, 500 mL, Ricca Chemical Company, 8000-16</image:caption>
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      <image:caption>Starch Indicator, 0.5% (w/v) Aqueous Solution, Mercury Free, for IodoMetric Titrations, 20 L Cubitainer, Ricca Chemical 8000-5 (Non-Regulated)</image:caption>
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      <image:caption>Arsenic ICP Standard, 1,000 ppm As in 3% HNO3 , 100 mL Plastic Bottle, Ricca Chemical PAS1KN-100 (8, UN3264, P.G. III)</image:caption>
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      <image:caption>Strontium ICP Standard, 1 mL = 1 mg Sr (1,000 ppm Sr), Sr(NO3)2 in 3% HNO3, 500 mL Plastic Bottle, Ricca Chemical Company, RPSR1KN0-500N (8, UN3264, P.G. III)</image:caption>
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      <image:title>Sulfuric Acid, 0.02 Normal (N/100), 1 L Plastic Bottle, Ricca R8200000-1A (Non-Regulated)</image:title>
      <image:caption>Sulfuric Acid, 0.02 Normal (N/100), 1 L Plastic Bottle, Ricca R8200000-1A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-0-02-normal-n-100-4-l-plastic-bottle-ricca-r8200000-4a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8200-52_524a4178-1997-4452-bb5e-973703a84af2.png?v=1784721701</image:loc>
      <image:title>Sulfuric Acid, 0.02 Normal (N/100), 4 L Plastic Bottle, Ricca R8200000-4A (Non-Regulated)</image:title>
      <image:caption>Sulfuric Acid, 0.02 Normal (N/100), 4 L Plastic Bottle, Ricca R8200000-4A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-0-100-normal-n-10-sold-by-each-each-poly-bottle-of-1-l-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8250-44.png?v=1784721704</image:loc>
      <image:title>Sulfuric Acid, 0.100 Normal (N/10) (Sold by Each / Each = Poly Bottle of 1 L) (Non-Regulated)</image:title>
      <image:caption>Sulfuric Acid, 0.100 Normal (N/10) (Sold by Each / Each = Poly Bottle of 1 L) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-0-100-normal-n-10-4-l-poly-bottle-ricca-chemical-8250-5-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8250-52_643c8f03-7cf7-42b4-b68d-4fdc206f8375.png?v=1784721706</image:loc>
      <image:title>Sulfuric Acid, 0.100 Normal (N/10), 4 L Poly Bottle, Ricca Chemical 8250-5 (Non-Regulated)</image:title>
      <image:caption>Sulfuric Acid, 0.100 Normal (N/10), 4 L Poly Bottle, Ricca Chemical 8250-5 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-1-00-normal-1-l-poly-bottle-ricca-r8300000-1a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8300-44.png?v=1784721708</image:loc>
      <image:title>Sulfuric Acid, 1.00 Normal, 1 L Poly Bottle Ricca R8300000-1A (Non-Regulated)</image:title>
      <image:caption>Sulfuric Acid, 1.00 Normal, 1 L Poly Bottle Ricca R8300000-1A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfuric-acid-4-00-normal-20-l-cubitainer-ricca-chemical-8322-5-8-un2796-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8322-5.png?v=1784721710</image:loc>
      <image:title>Sulfuric Acid, 4.00 Normal, 20 L Cubitainer, Ricca Chemical 8322-5 (8, UN2796, P.G. II)</image:title>
      <image:caption>Sulfuric Acid, 4.00 Normal, 20 L Cubitainer, Ricca Chemical 8322-5 (8, UN2796, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfur-icp-standard-1-ml-1-mg-s-1-000-ppm-s-nh42so4-in-h2o-100-ml-poly-bottle-ricca-chemical-ps1kw-100-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8354-41_f64a6f96-3f68-485b-86f9-125a5aa86d2b.png?v=1784721712</image:loc>
      <image:title>Sulfur ICP Standard, 1 mL = 1 mg S (1,000 ppm S), (NH4)2SO4 in H2O, 100 mL Poly Bottle, Ricca Chemical PS1KW-100 (Non-Regulated)</image:title>
      <image:caption>Sulfur ICP Standard, 1 mL = 1 mg S (1,000 ppm S), (NH4)2SO4 in H2O, 100 mL Poly Bottle, Ricca Chemical PS1KW-100 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sulfur-icp-standard-1000-ppm-s-in-h2o-500-ml-natural-poly-bottle</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8354-43_eff253b3-79fe-4903-b63f-b139d791ce3d.png?v=1784721714</image:loc>
      <image:title>Sulfur ICP Standard, 1000 ppm S in H2O, 500 mL Natural Poly Bottle</image:title>
      <image:caption>Sulfur ICP Standard, 1000 ppm S in H2O, 500 mL Natural Poly Bottle</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/thallium-aa-standard-1000-ppm-thallium-100-ml-plastic-bottle-ricca-ratl1kn0-100n-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8390-41_e8afd24c-575d-493f-8a31-0af4b5b7effb.png?v=1784721716</image:loc>
      <image:title>Thallium AA Standard, 1000 ppm Thallium, 100 mL Plastic Bottle, Ricca RATL1KN0-100N (Non-Regulated)</image:title>
      <image:caption>Thallium AA Standard, 1000 ppm Thallium, 100 mL Plastic Bottle, Ricca RATL1KN0-100N (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/thallium-icp-standard-1000-ppm-thallium-100-ml-plastic-bottle-ricca-rptl1kn0-100n-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8391-41_7b7431bc-fa0f-4b10-b041-881c95354b49.png?v=1784721718</image:loc>
      <image:title>Thallium ICP Standard, 1000 ppm Thallium, 100 mL Plastic Bottle, Ricca RPTL1KN0-100N (8, UN3264, P.G. III)</image:title>
      <image:caption>Thallium ICP Standard, 1000 ppm Thallium, 100 mL Plastic Bottle, Ricca RPTL1KN0-100N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/thymol-blue-indicator-0-4-w-v-aqueous-solution-sold-by-each-each-poly-bottle-of-500-ml-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8410-16.png?v=1784721720</image:loc>
      <image:title>Thymol Blue Indicator, 0.4% (w/v) Aqueous Solution (Sold by Each / Each = Poly Bottle of 500 mL) (Non-Regulated)</image:title>
      <image:caption>Thymol Blue Indicator, 0.4% (w/v) Aqueous Solution (Sold by Each / Each = Poly Bottle of 500 mL) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/tin-aa-standard-1-ml-1mg-sn-1-000-ppm-sn-4-oz-poly-bottle-ricca-asn1kh-100-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8500-41.png?v=1784721723</image:loc>
      <image:title>Tin AA Standard, 1 mL = 1mg Sn (1,000 ppm Sn) 4 oz. Poly Bottle, Ricca ASN1KH-100 (8, UN3264, P.G. III)</image:title>
      <image:caption>Tin AA Standard, 1 mL = 1mg Sn (1,000 ppm Sn) 4 oz. Poly Bottle, Ricca ASN1KH-100 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/tin-icp-standard-1-ml-1-mg-sn-1-000-ppm-sn-sn-in-10-hcl-100-ml-poly-bottle-ricca-chemical-psn1kh-100-8-un1789-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8501-41.png?v=1784721724</image:loc>
      <image:title>Tin ICP Standard, 1 mL = 1 mg Sn (1,000 ppm Sn), Sn in 10% HCl, 100 mL Poly Bottle, Ricca Chemical PSN1KH-100 (8, UN1789, P.G. III)</image:title>
      <image:caption>Tin ICP Standard, 1 mL = 1 mg Sn (1,000 ppm Sn), Sn in 10% HCl, 100 mL Poly Bottle, Ricca Chemical PSN1KH-100 (8, UN1789, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/titanium-aa-standard-1-000-ppm-ti-in-15-hcl-100-ml-plastic-bottle-ricca-chemical-company-rati1kh0-100n-8-un1789-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8600-41.png?v=1784721725</image:loc>
      <image:title>Titanium AA Standard, 1,000 ppm Ti in 15% HCl, 100 mL Plastic Bottle, Ricca Chemical Company, RATI1KH0-100N (8, UN1789, P.G. III)</image:title>
      <image:caption>Titanium AA Standard, 1,000 ppm Ti in 15% HCl, 100 mL Plastic Bottle, Ricca Chemical Company, RATI1KH0-100N (8, UN1789, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/titanium-aa-standard-1-000-ppm-ti-in-15-hcl-500-ml-plastic-bottle-ricca-chemical-company-rati1kh0-500n-8-un1789-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8600-43.png?v=1784721727</image:loc>
      <image:title>Titanium AA Standard, 1,000 ppm Ti in 15% HCl, 500 mL Plastic Bottle, Ricca Chemical Company, RATI1KH0-500N (8, UN1789, P.G. III)</image:title>
      <image:caption>Titanium AA Standard, 1,000 ppm Ti in 15% HCl, 500 mL Plastic Bottle, Ricca Chemical Company, RATI1KH0-500N (8, UN1789, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/titanium-icp-standard-1-000-ppm-ti-in-h2o-trace-hf-100-ml-plastic-bottle-ricca-chemical-company-rpti1kw0-100n-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8601-41.png?v=1784721729</image:loc>
      <image:title>Titanium ICP Standard, 1,000 ppm Ti in H2O/trace HF, 100 mL Plastic Bottle, Ricca Chemical Company, RPTI1KW0-100N (Non-Regulated)</image:title>
      <image:caption>Titanium ICP Standard, 1,000 ppm Ti in H2O/trace HF, 100 mL Plastic Bottle, Ricca Chemical Company, RPTI1KW0-100N (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/total-dissolved-solids-fresh-water-standard-207-ppm-fresh-water-ions-1-l-plastic-bottle-ricca-r8663000-1a-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8663-32.png?v=1784721730</image:loc>
      <image:title>Total Dissolved Solids Fresh Water Standard, 207 ppm Fresh Water Ions, 1 L Plastic Bottle, Ricca R8663000-1A (Non-Regulated)</image:title>
      <image:caption>Total Dissolved Solids Fresh Water Standard, 207 ppm Fresh Water Ions, 1 L Plastic Bottle, Ricca R8663000-1A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/tisab-ii-buffer-ise-f-fluoride-reagent-1-500-ml-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8670-16.png?v=1784721734</image:loc>
      <image:title>TISAB II Buffer ISE F/Fluoride Reagent 1, 500 mL (Non-Regulated)</image:title>
      <image:caption>TISAB II Buffer ISE F/Fluoride Reagent 1, 500 mL (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/total-suspended-solids-standard-100mg-l-500-ml-glass-bottle-ricca-r8672000-500c-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8672-16.png?v=1785287224</image:loc>
      <image:title>Total Suspended Solids Standard, 100mg/L, 500 mL Glass Bottle, Ricca R8672000-500C (Non-Regulated)</image:title>
      <image:caption>Total Suspended Solids Standard, 100mg/L, 500 mL Glass Bottle, Ricca R8672000-500C (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/universal-indicator-ph-range-2-to-10-500-ml-amber-glass-bottle-ricca-r8770000-500c-3-un1987-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-8870-16_f4e205ac-4880-4f8c-a544-f9a7a4051427.png?v=1784721739</image:loc>
      <image:title>Universal Indicator, pH Range 2 to 10, 500 mL Amber Glass Bottle, Ricca R8770000-500C (3, UN1987, P.G. II)</image:title>
      <image:caption>Universal Indicator, pH Range 2 to 10, 500 mL Amber Glass Bottle, Ricca R8770000-500C (3, UN1987, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/barium-aa-standard-1-ml-1-mg-ba-1-000-ppm-ba-bano32-in-3-hno3-100-ml-poly-bottle-ricca-chemical-aba1kn-100-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-900-41.png?v=1784721741</image:loc>
      <image:title>Barium AA Standard, 1 mL = 1 mg Ba (1,000 ppm Ba), Ba(NO3)2 in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical ABA1KN-100 (8, UN3264, P.G. III)</image:title>
      <image:caption>Barium AA Standard, 1 mL = 1 mg Ba (1,000 ppm Ba), Ba(NO3)2 in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical ABA1KN-100 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/barium-icp-standard-1-ml-1-mg-ba-1-000-ppm-ba-bano32-in-3-hno3-100-ml-poly-bottle-ricca-chemical-pba1kn-100-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-901-41.png?v=1784721743</image:loc>
      <image:title>Barium ICP Standard, 1 mL = 1 mg Ba (1,000 ppm Ba), Ba(NO3)2 in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical PBA1KN-100 (8, UN3264, P.G. III)</image:title>
      <image:caption>Barium ICP Standard, 1 mL = 1 mg Ba (1,000 ppm Ba), Ba(NO3)2 in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical PBA1KN-100 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/barium-icp-standard-1-ml-1-mg-ba-1-000-ppm-ba-bano32-in-3-hno3-500-ml-poly-bottle-ricca-chemical-pba1kn-500-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-901-43.png?v=1784721745</image:loc>
      <image:title>Barium ICP Standard, 1 mL = 1 mg Ba (1,000 ppm Ba), Ba(NO3)2 in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical PBA1KN-500 (8, UN3264, P.G. III)</image:title>
      <image:caption>Barium ICP Standard, 1 mL = 1 mg Ba (1,000 ppm Ba), Ba(NO3)2 in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical PBA1KN-500 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/vanadium-aa-standard-1-ml-1-mg-v-1-000-ppm-v-v2o5-in-3-hno3-100-ml-poly-bottle-ricca-chemical-av1kn-100-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9100-41.png?v=1784721746</image:loc>
      <image:title>Vanadium AA Standard, 1 mL = 1 mg V (1,000 ppm V), V2O5 in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical AV1KN-100 (8, UN3264, P.G. III)</image:title>
      <image:caption>Vanadium AA Standard, 1 mL = 1 mg V (1,000 ppm V), V2O5 in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical AV1KN-100 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/vanadium-aa-standard-1-ml-1-mg-v-1-000-ppm-v-v2o5-in-3-hno3-500-ml-poly-bottle-ricca-chemical-av1kn-500-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9100-43.png?v=1784721748</image:loc>
      <image:title>Vanadium AA Standard, 1 mL = 1 mg V (1,000 ppm V), V2O5 in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical AV1KN-500 (8, UN3264, P.G. III)</image:title>
      <image:caption>Vanadium AA Standard, 1 mL = 1 mg V (1,000 ppm V), V2O5 in 3% HNO3, 500 mL Poly Bottle, Ricca Chemical AV1KN-500 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/vanadium-icp-standard-1000-ppm-vanadium-100-ml-plastic-bottle-ricca-rpv1kn00-100n-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9101-41.png?v=1784721750</image:loc>
      <image:title>Vanadium ICP Standard, 1000 ppm Vanadium, 100 mL Plastic Bottle, Ricca RPV1KN00-100N (8, UN3264, P.G. III)</image:title>
      <image:caption>Vanadium ICP Standard, 1000 ppm Vanadium, 100 mL Plastic Bottle, Ricca RPV1KN00-100N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/water-acs-reagent-grade-astm-type-i-astm-type-ii-1-l-plastic-bottle-ricca-chemical-company-9150-32-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9150-32.png?v=1784721752</image:loc>
      <image:title>Water, ACS Reagent Grade, ASTM Type I, ASTM Type II, 1 L Plastic Bottle, Ricca Chemical Company, 9150-32 (Non-Regulated)</image:title>
      <image:caption>Water, ACS Reagent Grade, ASTM Type I, ASTM Type II, 1 L Plastic Bottle, Ricca Chemical Company, 9150-32 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/water-acs-reagent-grade-astm-type-i-astm-type-ii-4-l-plastic-bottle-ricca-chemical-company-9150-1-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9150-52_a0402954-5b8b-42a3-a142-14396e1365c6.png?v=1784721754</image:loc>
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      <image:caption>Water, ACS Reagent Grade, ASTM Type I, ASTM Type II, 4 L Plastic Bottle, Ricca Chemical Company, 9150-1 (Non-Regulated)</image:caption>
    </image:image>
  </url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9150-55.png?v=1785287226</image:loc>
      <image:title>Water, ACS Reagent Grade, ASTM Type I, ASTM Type II, 20 L Cubitainer, Ricca Chemical Company, 9150-5 (Non-Regulated)</image:title>
      <image:caption>Water, ACS Reagent Grade, ASTM Type I, ASTM Type II, 20 L Cubitainer, Ricca Chemical Company, 9150-5 (Non-Regulated)</image:caption>
    </image:image>
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  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9189-05.png?v=1784721758</image:loc>
      <image:title>Water, USP/EP/JP Purified, 20 L, Ricca, R9189000-20E1</image:title>
      <image:caption>Water, USP/EP/JP Purified, 20 L, Ricca, R9189000-20E1</image:caption>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9190-01_c0ec17c2-de29-4db5-a0aa-b982ed1a1615.png?v=1784721759</image:loc>
      <image:title>Water, USP/EP Purified,  4 L, Ricca, 9190-1</image:title>
      <image:caption>Water, USP/EP Purified,  4 L, Ricca, 9190-1</image:caption>
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  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9200-43.png?v=1784721761</image:loc>
      <image:title>Water Hardness Buffer, with Magnesium EDTA, 500 mL Poly Bottle, Ricca 9200-16 (8 UN2672 P.G. III)</image:title>
      <image:caption>Water Hardness Buffer, with Magnesium EDTA, 500 mL Poly Bottle, Ricca 9200-16 (8 UN2672 P.G. III)</image:caption>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9200-44.png?v=1784721763</image:loc>
      <image:title>Water Hardness Buffer, with Magnesium EDTA, 1 L Plastic Bottle, Ricca Chemical Company, 9200-32 ( 8, UN2672, P.G. III)</image:title>
      <image:caption>Water Hardness Buffer, with Magnesium EDTA, 1 L Plastic Bottle, Ricca Chemical Company, 9200-32 ( 8, UN2672, P.G. III)</image:caption>
    </image:image>
  </url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9300-43.png?v=1784721765</image:loc>
      <image:title>Water Hardness Indicator, 0.5% (w/v) Eriochrome Black T in 2-Methoxyethanol, 500 mL Amber Glass Bottle, Ricca Chemical 9300-16 (3, UN1188, P.G. III)</image:title>
      <image:caption>Water Hardness Indicator, 0.5% (w/v) Eriochrome Black T in 2-Methoxyethanol, 500 mL Amber Glass Bottle, Ricca Chemical 9300-16 (3, UN1188, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9420-16.png?v=1784721767</image:loc>
      <image:title>Zero Oxygen Standard, for Calibration of Dissolved Oxygen Meters, 500 mL Plastic Bottle, Ricca Chemical Company, R9420000-500G (Non-Regulated)</image:title>
      <image:caption>Zero Oxygen Standard, for Calibration of Dissolved Oxygen Meters, 500 mL Plastic Bottle, Ricca Chemical Company, R9420000-500G (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9420-4_7032d679-b1de-4638-ab8c-6b4b3141b234.png?v=1784721770</image:loc>
      <image:title>Zero Oxygen Standard, for Calibration of Dissolved Oxygen Meters, 120 mL Plastic Bottle, Ricca Chemical Company, R9420000-120A (Non-Regulated)</image:title>
      <image:caption>Zero Oxygen Standard, for Calibration of Dissolved Oxygen Meters, 120 mL Plastic Bottle, Ricca Chemical Company, R9420000-120A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9450-43.png?v=1784721771</image:loc>
      <image:title>Zinc Acetate, 2 Normal (220 g + 870 mL Water), 500 mL Plastic Bottle, Ricca Chemical Company, R9450000-500A (Non-Regulated)</image:title>
      <image:caption>Zinc Acetate, 2 Normal (220 g + 870 mL Water), 500 mL Plastic Bottle, Ricca Chemical Company, R9450000-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9500-41_4da046fd-8b26-430f-904e-1c0c468936fd.png?v=1784778061</image:loc>
      <image:title>Zinc AA Standard, 1000 ppm Zinc, 100 mL Plastic Bottle, Ricca Chemical Company, RAZN1KN0-100N (8, UN3264, P.G. III)</image:title>
      <image:caption>Zinc AA Standard, 1000 ppm Zinc, 100 mL Plastic Bottle, Ricca Chemical Company, RAZN1KN0-100N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9500-43.png?v=1784721776</image:loc>
      <image:title>Zinc AA Standard, 1 mL = 1 mg Zn (1,000 ppm Zn), Zn in 3% HNO3, 500 mL Plastic Bottle, Ricca Chemical AZN1KN-500 (8, UN3264, P.G. III)</image:title>
      <image:caption>Zinc AA Standard, 1 mL = 1 mg Zn (1,000 ppm Zn), Zn in 3% HNO3, 500 mL Plastic Bottle, Ricca Chemical AZN1KN-500 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9501-41_00d41ce9-bd47-4c6b-bd85-7c71941ce085.png?v=1784721778</image:loc>
      <image:title>Zinc ICP Standard, 1000ppm Zinc, 100 mL Plastic Bottle, Ricca Chemical Company, RPZN1KN0-100N (8, UN3264, P.G. III)</image:title>
      <image:caption>Zinc ICP Standard, 1000ppm Zinc, 100 mL Plastic Bottle, Ricca Chemical Company, RPZN1KN0-100N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/beryllium-aa-standard-1000-ppm-beryllium-100-ml-plastic-bottle-ricca-abe1kn0-100-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-970-41.png?v=1784721780</image:loc>
      <image:title>Beryllium AA Standard, 1000 ppm Beryllium, 100 mL Plastic Bottle, Ricca ABE1KN0-100 (8, UN3264, P.G. III)</image:title>
      <image:caption>Beryllium AA Standard, 1000 ppm Beryllium, 100 mL Plastic Bottle, Ricca ABE1KN0-100 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-971-41.png?v=1784721782</image:loc>
      <image:title>Beryllium ICP Standard, 1 mL = 1 mg Be (1,000 ppm Be), Be4O(C2H3O2)6 in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical PBE1KN-100 (8, UN3264, P.G. III)</image:title>
      <image:caption>Beryllium ICP Standard, 1 mL = 1 mg Be (1,000 ppm Be), Be4O(C2H3O2)6 in 3% HNO3, 100 mL Poly Bottle, Ricca Chemical PBE1KN-100 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/zobells-solution-zobells-solution-oxidation-reduction-potential-standard-1-l-amber-plastic-bottle-ricca-chemical-company-r9880000-1b-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-9880-32.png?v=1784721784</image:loc>
      <image:title>ZoBell&apos;s Solution, ZoBell&apos;s Solution, Oxidation-Reduction Potential Standard, 1 L Amber Plastic Bottle, Ricca Chemical Company, R9880000-1B (Non-Regulated)</image:title>
      <image:caption>ZoBell&apos;s Solution, ZoBell&apos;s Solution, Oxidation-Reduction Potential Standard, 1 L Amber Plastic Bottle, Ricca Chemical Company, R9880000-1B (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-ACR61KN-100.png?v=1784721786</image:loc>
      <image:title>Chromium(VI) AA Standard, 1 mL = 1 mg Cr (1,000 ppm Cr) K2Cr2O7 in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, ACR61KN-100 (8, UN3264, P.G. III)</image:title>
      <image:caption>Chromium(VI) AA Standard, 1 mL = 1 mg Cr (1,000 ppm Cr) K2Cr2O7 in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, ACR61KN-100 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-AFE1KN-100.png?v=1784721788</image:loc>
      <image:title>Iron AA Standard, 1000 ppm Fe in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, RAFE1KN0-100N, (8, UN3264, P. G. III)</image:title>
      <image:caption>Iron AA Standard, 1000 ppm Fe in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, RAFE1KN0-100N, (8, UN3264, P. G. III)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-ASR1KN-500.png?v=1784721789</image:loc>
      <image:title>Strontium AA Standard, 1000 ppm Sr in 3% HNO3, 500 mL Plastic Bottle, Ricca Chemical ASR1KN-500 (8, UN3264, P.G. III)</image:title>
      <image:caption>Strontium AA Standard, 1000 ppm Sr in 3% HNO3, 500 mL Plastic Bottle, Ricca Chemical ASR1KN-500 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-PAL1KN-500_4fea013e-b15b-47c7-bacd-8e22d2cb93b2.png?v=1784721791</image:loc>
      <image:title>Aluminum ICP Standard, 1,000 ppm Al in 3% HNO3 (Poly Bottle of 500 mL), Ricca Chemical PAL1KN-500 (Non-Regulated)</image:title>
      <image:caption>Aluminum ICP Standard, 1,000 ppm Al in 3% HNO3 (Poly Bottle of 500 mL), Ricca Chemical PAL1KN-500 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-PAU1KH-100.png?v=1784721793</image:loc>
      <image:title>Gold ICP Standard, 1 mL = 1 mg Au (1,000 ppm Au), Au in 3% HCl, 100 mL Amber Glass Bottle, Ricca Chemical Company RPAU1KH0-100C (Non-Regulated)</image:title>
      <image:caption>Gold ICP Standard, 1 mL = 1 mg Au (1,000 ppm Au), Au in 3% HCl, 100 mL Amber Glass Bottle, Ricca Chemical Company RPAU1KH0-100C (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-PCE1KN-100_cdd698a7-cb83-4f9c-ae74-ac4d6bc6723a.png?v=1784721795</image:loc>
      <image:title>Cerium ICP Standard, 1000 ppm Ce in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, PCE1KN-100 (8, UN3264, P.G. III)</image:title>
      <image:caption>Cerium ICP Standard, 1000 ppm Ce in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, PCE1KN-100 (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-PFE10KN-500.png?v=1784721797</image:loc>
      <image:title>Iron ICP Standard, 10,000 ppm Fe in 5% HNO3, 500 mL Plastic Bottle, Ricca Chemical RPFE10KN-500N (8, UN3264, P.G. III)</image:title>
      <image:caption>Iron ICP Standard, 10,000 ppm Fe in 5% HNO3, 500 mL Plastic Bottle, Ricca Chemical RPFE10KN-500N (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-PY1KN-100_b4198f47-4be7-4b08-9a5d-0bdcf44d2be4.png?v=1784721799</image:loc>
      <image:title>Yttrium ICP Standard, 1000 ppm Y in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, RPY1KN00-100N (8, UN3264, P. G. III)</image:title>
      <image:caption>Yttrium ICP Standard, 1000 ppm Y in 3% HNO3, 100 mL Plastic Bottle, Ricca Chemical Company, RPY1KN00-100N (8, UN3264, P. G. III)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-R0279500-120A.png?v=1784721801</image:loc>
      <image:title>Adler&apos;s Reagent (Etchant), 120 mL Plastic Bottle, Ricca Chemical Company, R0279500-120A (8, UN3264, P.G. II)</image:title>
      <image:caption>Adler&apos;s Reagent (Etchant), 120 mL Plastic Bottle, Ricca Chemical Company, R0279500-120A (8, UN3264, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-R2094000-100A.png?v=1784721804</image:loc>
      <image:title>Hexavalent Chromium Standard, 50 ppm Cr6+, 100 mL Plastic Bottle, Ricca Chemical Company, R2094000-100A (Non-Regulated)</image:title>
      <image:caption>Hexavalent Chromium Standard, 50 ppm Cr6+, 100 mL Plastic Bottle, Ricca Chemical Company, R2094000-100A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <image:image>
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      <image:caption>Copper Sulfate Solution, Specific Gravity 1.186, for UL Corrosion Test, 1 L Plastic Bottle, Ricca Chemical Company, 2348-32 (Non-Regulated)</image:caption>
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  </url>
  <url>
    <loc>https://preiser.com/products/periodic-acid-0-5-w-v-in-80-v-v-acetic-acid-4-l-amber-glass-bottle-ricca-chemical-company-r5518500-4c</loc>
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      <image:caption>Periodic Acid, 0.5% (w/v) in 80% (v/v) Acetic Acid, 4 L Amber Glass Bottle, Ricca Chemical Company, R5518500-4C</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Potassium Carbonate, 50% w/w, 20 L, Ricca Chemical Company, R5883600-20F</image:caption>
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  </url>
  <url>
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      <image:caption>Potassium Chloride Conductivity Standard, 5 uS/cm (5 umho/cm) at 25 Degrees C, 500 mL Poly Bottle, Ricca Chemical 5585.05-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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    <image:image>
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      <image:caption>Potassium Chloride Conductivity Standard, 5 microSiemens/cm at 25 Degrees C, 4 L, Ricca, R5885050-4A</image:caption>
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  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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      <image:caption>Potassium Chloride Conductivity Standard, 10 microS/cm at 25 Degrees C, Ricca, R5885100-1A</image:caption>
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  </url>
  <url>
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      <image:caption>Potassium Chloride Conductivity Standard, 10 uS/cm (10 umho/cm) at 25 Degrees C, 500 mL Poly Bottle, Ricca Chemical 5885.1-16 (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Potassium Chloride Conductivity Standard, 15 uS/cm (15 umho/cm) at 25 Degrees C, 500 mL Poly Bottle, Ricca Chemical R5885150-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/RIA-R5885250500A.png?v=1784721818</image:loc>
      <image:title>Potassium Chloride Conductivity Standard, 25 uS/cm (25 umho/cm) at 25 Degrees C, 500 mL Poly Bottle, Ricca Chemical R5885250-500A (Non-Regulated)</image:title>
      <image:caption>Potassium Chloride Conductivity Standard, 25 uS/cm (25 umho/cm) at 25 Degrees C, 500 mL Poly Bottle, Ricca Chemical R5885250-500A (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Starch Indicator, 1% (w/v), with Chloroform Preservative, 20 L Poly Cubitainer, Ricca, R8052000-20F</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Starch Indicator, 1% (w/v), with Chloroform Preservative, 4 L Poly Bottle, Ricca Chemical Company, R8052000-4A</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Weight, Tweezers 3.54 x 0.46 in.</image:caption>
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  </url>
  <url>
    <loc>https://preiser.com/products/weight-kit-screw-knob-2-kg-astm-class-1-stainless-steel-polished-density-7-95-g-cm3-rice-lake-weighing-systems</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Weight Kit, Screw Knob 2 kg ASTM Class 1 Stainless Steel Polished, Density 7.95 g/cm3, Rice Lake Weighing Systems,</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/seiler-s025102-binocular-microscope-10x-eyepiece-4x-10x-40x-100x</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Seiler S025102 Binocular Microscope, 10X Eyepiece, 4X, 10X, 40X, 100X</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/33-400-cap-closed-top-polypropylene-with-solid-teflon-liner-autoclavable</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>33-400 Cap, Closed Top, Polypropylene with Solid Teflon Liner, Autoclavable</image:caption>
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  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Caps, Teflon Lined, 53 mm, 72/PK</image:caption>
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  </url>
  <url>
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      <image:caption>Large Spouted Sample Pan, 15-1/4 L in. x 9-7/8 in. W x 2-1/8 in. H</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/pipet-tip-universal-graduated-blue-100-1000-ul-package-of-1000</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Pipet Tip, Universal, Graduated, Blue, 100 - 1000 uL (Package of 1000)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/seiler-si-100dc-hbo-power-supply-12v-100-w</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Seiler SI-100DC HBO Power Supply, 12V / 100 W</image:title>
      <image:caption>Seiler SI-100DC HBO Power Supply, 12V / 100 W</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/n-o-bistrimethylsilylacetamide-100-ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>N,O-Bis(trimethylsilyl)acetamide, 100 mL</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/diisopropylamine-99-5-2-5-l-amber-bottle-sigma-aldrich-471224-4x2-5l</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Diisopropylamine, &gt;=99.5%, 2.5 L Amber Bottle, Sigma-Aldrich, 471224-4x2.5L</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sample-container-21-l-pe-for-sigma-sampler</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Sample Container, 21 L Polyethylene with Polypropylene Cap, for SIGMA Sampler, HACH, 6494</image:title>
      <image:caption>Sample Container, 21 L Polyethylene with Polypropylene Cap, for SIGMA Sampler, HACH, 6494</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Urease from Canavalia ensiformis (Jack bean), 25 g, Sigma-Aldrich 94280</image:title>
      <image:caption>Urease from Canavalia ensiformis (Jack bean), 25 g, Sigma-Aldrich 94280</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Total Acid Number Standard, ASTM D664 (0.49mg KOH/g), 125 g, Millipore Sigma, TAN005-125G</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/total-acid-number-standard-astm-d664-1-54-mg-koh-g-125-g-millipore-sigma-tan015-125g</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Total Acid Number Standard ASTM D664 (1.54 mg KOH/g), 125 g, Millipore Sigma, TAN015-125G</image:title>
      <image:caption>Total Acid Number Standard ASTM D664 (1.54 mg KOH/g), 125 g, Millipore Sigma, TAN015-125G</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Transfer Pipet, Sterile, 5 mL, 20/Bag and 20 Bags per Package</image:caption>
    </image:image>
  </url>
  <url>
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      <image:caption>Pipet, Transfer, Samco(Trademark), Graduated, Extra Long, Non-sterile, Polyethylene, Fine Tip, 23.0 mL, 100/PK, 10PK/CS, Thermo Scientific, SAMCO 263</image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Ammonium Sulfide, Light Solution, Reagent, 500 mL Amber Glass Bottle, A1250-500MLGL</image:title>
      <image:caption>Ammonium Sulfide, Light Solution, Reagent, 500 mL Amber Glass Bottle, A1250-500MLGL</image:caption>
    </image:image>
  </url>
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    <image:image>
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      <image:title>Bromine, Reagent, ACS Grade, 450 g</image:title>
      <image:caption>Bromine, Reagent, ACS Grade, 450 g</image:caption>
    </image:image>
  </url>
  <url>
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      <image:caption>Bis(2-ethylhexyl) Hydrogen Phosphate, 100 g, B2216-100GM</image:caption>
    </image:image>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPE-C1196-500G.png?v=1784721863</image:loc>
      <image:title>Celite (Registered), 545, 500 g, Spectrum Chemical Mfg, C1196-500G</image:title>
      <image:caption>Celite (Registered), 545, 500 g, Spectrum Chemical Mfg, C1196-500G</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/diisopropylamine-gallon-glass-container-3-un1158-p-g-ii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPE-D2282.png?v=1784721864</image:loc>
      <image:title>Diisopropylamine, Gallon Glass Container (3, UN1158, P.G. II)</image:title>
      <image:caption>Diisopropylamine, Gallon Glass Container (3, UN1158, P.G. II)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ferric-chloride-anhydrous-powder-purified-500-g</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPE-F1013-09.png?v=1784721866</image:loc>
      <image:title>Ferric Chloride, Anhydrous, Powder, Purified, 500 g</image:title>
      <image:caption>Ferric Chloride, Anhydrous, Powder, Purified, 500 g</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/beta-glycerophosphoric-acid-disodium-salt-pentahydrate-25-g</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPE-G1132-25GM.png?v=1784721867</image:loc>
      <image:title>beta-Glycerophosphoric Acid Disodium Salt, Pentahydrate, 25 g</image:title>
      <image:caption>beta-Glycerophosphoric Acid Disodium Salt, Pentahydrate, 25 g</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/light-mineral-oil-nf-grade-1-l-spectrum-m1293-1lt</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPE-M1293-1LT_1e76a93f-8693-449c-b9c0-2dd485c31215.png?v=1784721869</image:loc>
      <image:title>Light Mineral Oil, NF Grade, 1 L, Spectrum, M1293-1LT</image:title>
      <image:caption>Light Mineral Oil, NF Grade, 1 L, Spectrum, M1293-1LT</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-gluconate-usp-500-g-spectrum-s1286-500g</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPE-S1286-500G.png?v=1784721877</image:loc>
      <image:title>Sodium Gluconate, USP, 500 g, Spectrum, S1286-500G</image:title>
      <image:caption>Sodium Gluconate, USP, 500 g, Spectrum, S1286-500G</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-lauryl-sulfate-reagent-sold-by-each-each-500-gram-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPE-S1333-500G.png?v=1784721879</image:loc>
      <image:title>Sodium Lauryl Sulfate, Reagent (Sold by Each / Each = 500 gram) (Non-Regulated)</image:title>
      <image:caption>Sodium Lauryl Sulfate, Reagent (Sold by Each / Each = 500 gram) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-sulfide-nonahydrate-crystal-reagent-acs-grade-500-g</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPE-S1465-500G.png?v=1784721880</image:loc>
      <image:title>Sodium Sulfide, Nonahydrate, Crystal, Reagent, ACS Grade, 500 g</image:title>
      <image:caption>Sodium Sulfide, Nonahydrate, Crystal, Reagent, ACS Grade, 500 g</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/stannous-chloride-anhydrous-reagent-2-5-kg-spectrum-chemical-manufacturing-s1533-2-5kg</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPE-S1533-12_f54beea7-9bbd-4c35-b51f-7918153504d1.png?v=1784721882</image:loc>
      <image:title>Stannous Chloride, Anhydrous, Reagent, 2.5 kg, Spectrum Chemical Manufacturing, S1533-2.5KG</image:title>
      <image:caption>Stannous Chloride, Anhydrous, Reagent, 2.5 kg, Spectrum Chemical Manufacturing, S1533-2.5KG</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sodium-metatungstate-100-g-spectrum-s2285-100g</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPE-S2285-100G_f65e1bc6-3e98-4392-adcb-c1d0ddbd6926.png?v=1784721885</image:loc>
      <image:title>Sodium Metatungstate, 100 g, Spectrum, S2285-100G</image:title>
      <image:caption>Sodium Metatungstate, 100 g, Spectrum, S2285-100G</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/tetra-n-butylammonium-hydroxide-1-0-m-aqueous-solution-25-ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPE-T1059-24.png?v=1784721886</image:loc>
      <image:title>Tetra-n-Butylammonium Hydroxide, 1.0 M Aqueous Solution, 25 mL</image:title>
      <image:caption>Tetra-n-Butylammonium Hydroxide, 1.0 M Aqueous Solution, 25 mL</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/tin-metal-granular-acs-reagent-20-mesh-sn-sold-by-each-each-25-grams-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPE-T1065-25GM.png?v=1784721887</image:loc>
      <image:title>Tin Metal, Granular, ACS Reagent, 20 Mesh Sn (Sold by Each / Each = 25 Grams) (Non-Regulated)</image:title>
      <image:caption>Tin Metal, Granular, ACS Reagent, 20 Mesh Sn (Sold by Each / Each = 25 Grams) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/tergitolr-15-s-7-surfactant-500-ml-spectrum-chemical-t1258-500ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPE-T1258-29.png?v=1784721889</image:loc>
      <image:title>Tergitol(R) 15-S-7, Surfactant, 500 mL, Spectrum Chemical, T1258-500ML</image:title>
      <image:caption>Tergitol(R) 15-S-7, Surfactant, 500 mL, Spectrum Chemical, T1258-500ML</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/urease-powder-100-000-units-non-regulated</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPE-UR115-25.png?v=1784721891</image:loc>
      <image:title>Urease, Powder, 100,000 Units (Non-Regulated)</image:title>
      <image:caption>Urease, Powder, 100,000 Units (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/chatillon-digital-force-gauge-200-x-0-02-lbf-ametek-dfs2-200</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPI-DFS2-200_962ed2e6-8080-4275-9b38-1e951346cced.png?v=1784721893</image:loc>
      <image:title>Chatillon Digital Force Gauge, 200 x 0.02 lbf, Ametek DFS2-200</image:title>
      <image:caption>Chatillon Digital Force Gauge, 200 x 0.02 lbf, Ametek DFS2-200</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/mechanical-test-stand-500-lbf-handwheel-750-mm-lg-series-vertical-bench-mounting-with-digital-travel-indicator-chatillon-mt500hs3b1</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPI-MT500HS3B1.png?v=1784721894</image:loc>
      <image:title>Mechanical Test Stand, 500 lbf, Handwheel, 750 mm, LG Series, Vertical Bench Mounting, with Digital Travel Indicator, Chatillon, MT500HS3B1</image:title>
      <image:caption>Mechanical Test Stand, 500 lbf, Handwheel, 750 mm, LG Series, Vertical Bench Mounting, with Digital Travel Indicator, Chatillon, MT500HS3B1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/yttrium-standard-10-000-ppm-sold-by-each-each-500-ml-8-un3264-p-g-iii</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPX-PLY2-3X_d65d5978-6036-427f-91e2-c4ffd2598b5a.png?v=1784721897</image:loc>
      <image:title>Yttrium Standard, 10,000 ppm (Sold by Each / Each = 500 mL) (8, UN3264, P.G. III)</image:title>
      <image:caption>Yttrium Standard, 10,000 ppm (Sold by Each / Each = 500 mL) (8, UN3264, P.G. III)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/oil-grease-standard-sold-by-each-each-5-ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SPX-QC0GR-WP.png?v=1784721898</image:loc>
      <image:title>Oil Grease Standard (Sold by Each / Each = 5 mL)</image:title>
      <image:caption>Oil Grease Standard (Sold by Each / Each = 5 mL)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/clear-borosilicate-screw-thread-vials-with-scispec-advantage-ptfe-lined-caps-19-mm-x-65-mm-vial-11-ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SSS-B69308_f96213bc-133c-43d2-a0e8-d30acf032d84.png?v=1784721900</image:loc>
      <image:title>Clear Borosilicate Screw Thread Vials with SciSpec Advantage PTFE Lined Caps, 19 mm x 65 mm Vial, 11 mL</image:title>
      <image:caption>Clear Borosilicate Screw Thread Vials with SciSpec Advantage PTFE Lined Caps, 19 mm x 65 mm Vial, 11 mL</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/vials-clear-borosilicate-screw-threaded-with-teflon-foam-lined-caps-60-ml-144-pk</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/SSS-B75560_24351735-fd14-4f42-94c1-690f7762ca43.png?v=1785287228</image:loc>
      <image:title>Vials, Clear Borosilicate Screw-Threaded with Teflon Foam Lined Caps, 60 mL, 144/PK</image:title>
      <image:caption>Vials, Clear Borosilicate Screw-Threaded with Teflon Foam Lined Caps, 60 mL, 144/PK</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/centrifuge-tube-polypropylene-copolymer-sterile-molded-in-graduations-50-ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/STK-3252.png?v=1784721903</image:loc>
      <image:title>Centrifuge Tube, Polypropylene copolymer, Sterile, Molded in Graduations, 50 mL.</image:title>
      <image:caption>Centrifuge Tube, Polypropylene copolymer, Sterile, Molded in Graduations, 50 mL.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/vials-transport-50-ml-blue-cap-case-of-500</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/STK-3261.png?v=1784721904</image:loc>
      <image:title>Vials, Transport, 50 mL, Blue Cap (Case of 500)</image:title>
      <image:caption>Vials, Transport, 50 mL, Blue Cap (Case of 500)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/vials-transport-50-ml-natural-cap-case-of-500</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/STK-3261N.png?v=1784721906</image:loc>
      <image:title>Vials, Transport, 50 mL, Natural Cap (Case of 500)</image:title>
      <image:caption>Vials, Transport, 50 mL, Natural Cap (Case of 500)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/50-ml-transport-vial-polypropylene-copolymer-natural-tube-with-blue-cap-500-cs</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/STK-3262.png?v=1784721907</image:loc>
      <image:title>50 mL Transport Vial, Polypropylene-Copolymer, Natural Tube with Blue Cap, 500/CS</image:title>
      <image:caption>50 mL Transport Vial, Polypropylene-Copolymer, Natural Tube with Blue Cap, 500/CS</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/flange-cap-ldpe-natural-16-mm-package-of-1000</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/STK-8558.png?v=1784721909</image:loc>
      <image:title>Flange Cap (LDPE) Natural, 16 mm, 1000/PK, Globe Scientific, 116152C</image:title>
      <image:caption>Flange Cap (LDPE) Natural, 16 mm, 1000/PK, Globe Scientific, 116152C</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/test-tube-12-x-75-mm-natural-5-ml-round-bottom</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/STK-8562.png?v=1784721910</image:loc>
      <image:title>Test Tube, 12 x 75 mm, Natural, 5 mL Round Bottom</image:title>
      <image:caption>Test Tube, 12 x 75 mm, Natural, 5 mL Round Bottom</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/two-position-cap-for-17-mm-tube-case-of-1000</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/STK-8596_ad877cb0-3bc6-42f7-9e68-c9bdd22402e7.png?v=1784778065</image:loc>
      <image:title>Two Position Cap for 17 mm Tube (Case of 1000)</image:title>
      <image:caption>Two Position Cap for 17 mm Tube (Case of 1000)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/specimen-cup-with-screw-cap-4-5-oz-case-of-500</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/STK-8655-01_519a3eda-d0c6-45eb-9b4b-b4addfada246.png?v=1784721913</image:loc>
      <image:title>Specimen Cup, with Screw Cap, 4.5  oz. (Case of 500)</image:title>
      <image:caption>Specimen Cup, with Screw Cap, 4.5  oz. (Case of 500)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/revolving-plate-fine-for-grinding-mill-crushers</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/STU-4BR-01.png?v=1784721914</image:loc>
      <image:title>Revolving Plate, Fine, for Grinding Mill Crushers</image:title>
      <image:caption>Revolving Plate, Fine, for Grinding Mill Crushers</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/revolving-plate-coarse-for-grinding-mill-crushers</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/STU-4CSR-01.png?v=1784721916</image:loc>
      <image:title>Revolving Plate, Coarse, for Grinding Mill Crushers</image:title>
      <image:caption>Revolving Plate, Coarse, for Grinding Mill Crushers</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/grinding-plate-stationary-for-4e-grinding-mill-qcg-systems-s-4css</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/STU-4CSS.png?v=1784721917</image:loc>
      <image:title>Grinding Plate, Stationary, for 4E Grinding Mill, QCG Systems, S-4CSS</image:title>
      <image:caption>Grinding Plate, Stationary, for 4E Grinding Mill, QCG Systems, S-4CSS</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/steel-ball-for-4e-grinding-mill-3-pk</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/STU-E13_068baa44-a2f0-456c-8d92-03f94172dfcd.png?v=1784721919</image:loc>
      <image:title>Steel Ball for 4E Grinding Mill, 3/PK, QCG Systems, S-E13</image:title>
      <image:caption>Steel Ball for 4E Grinding Mill, 3/PK, QCG Systems, S-E13</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/plate-collar-for-model-4e-grinding-mills-qcg-systems-s-e23</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/STU-E23.png?v=1784721920</image:loc>
      <image:title>Plate Collar for Model 4E Grinding Mills, QCG Systems S-E23</image:title>
      <image:caption>Plate Collar for Model 4E Grinding Mills, QCG Systems S-E23</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/plate-screws-3-set-for-electric-grinding-mill</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/STU-E48-01.png?v=1784721921</image:loc>
      <image:title>Plate Screws, 3/Set for Electric Grinding Mill, S-E48</image:title>
      <image:caption>Plate Screws, 3/Set for Electric Grinding Mill, S-E48</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cotter-pins-for-4e-grinding-mill-5-pk</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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  <url>
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  <url>
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  <url>
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  <url>
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  <url>
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  </url>
  <url>
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  <url>
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      <image:caption>Iron Reagent #1 (Sold by Each / Each = 2  oz. Bottle) (Non-Reagent)</image:caption>
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  </url>
  <url>
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      <image:caption>Iron Reagent #2 (Sold by Each / Each = 0.75  oz. Bottle) (Non-Reagent)</image:caption>
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  </url>
  <url>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TAQ-214FB125_d209d7d5-aeac-42f8-b4a3-8778340cfea4.png?v=1784721944</image:loc>
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  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TAY-R0620-500.png?v=1784721946</image:loc>
      <image:title>Hardness Indicating Powder (Sold by Each / Each = 500 gram Bottle) (Non-Regulated)</image:title>
      <image:caption>Hardness Indicating Powder (Sold by Each / Each = 500 gram Bottle) (Non-Regulated)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/3-mm-x-100-mm-5-um-hypercarb-guard-columns-2-pk-thermo-scientific-35005-013001</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TE-35005-013001_c9087af1-5404-4fc4-aefe-eaed072ba415.png?v=1784721947</image:loc>
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    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/3-mm-x-100-mm-5-um-hypercarb-analytical-column-thermo-scientific-35005-103030</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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      <image:caption>3 mm x 100 mm 5 um Hypercarb Analytical Column, Thermo Scientific, 35005-103030</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/heating-element-240-v-1-5-kw-for-fi-streem-stills</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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      <image:caption>Heating Element, 240 V, 1.5 kW for Fi-Streem Stills</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/boiler-for-the-fi-streem-water-purification-stills</loc>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-562X2LS.png?v=1784721955</image:loc>
      <image:title>Boiler for the Fi-Streem Water Purification Stills</image:title>
      <image:caption>Boiler for the Fi-Streem Water Purification Stills</image:caption>
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  </url>
  <url>
    <loc>https://preiser.com/products/bushing-thermo-scientific-br356x1</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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    <image:image>
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      <image:caption>Bushing, Thermo Scientific, BR356X1</image:caption>
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  </url>
  <url>
    <loc>https://preiser.com/products/control-unit-for-thermolyne-furnace</loc>
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  </url>
  <url>
    <loc>https://preiser.com/products/replacement-element-for-hotplates-and-stirrer-hotplates-thermo-scientific-el20x1</loc>
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      <image:caption>Replacement Element for Hotplates and Stirrer Hotplates, Thermo Scientific, EL20X1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/top-element-for-barnstead-thermolyne-f6018-furnace-and-others</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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      <image:caption>Top Element for Barnstead/Thermolyne F6018 Furnace and others</image:caption>
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  </url>
  <url>
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      <image:title>Side Element for Barnstead/Thermolyne F6018 Furnace and others</image:title>
      <image:caption>Side Element for Barnstead/Thermolyne F6018 Furnace and others</image:caption>
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  <url>
    <loc>https://preiser.com/products/heating-element-top-for-barnstead-thermolyne-furnaces-f6028c-and-others</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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      <image:caption>Heating Element, Top, for Barnstead/Thermolyne Furnaces (F6028C and Others)</image:caption>
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  <url>
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      <image:caption>Heating Element, Side, for Barnstead/Thermolyne Furnaces (F6028C and Others)</image:caption>
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  </url>
  <url>
    <loc>https://preiser.com/products/heating-element-bottom-for-barnstead-thermolyne-furnaces-f6028c-and-others</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Heating Element, Bottom, for Barnstead/Thermolyne Furnaces (F6028C and Others)</image:title>
      <image:caption>Heating Element, Bottom, for Barnstead/Thermolyne Furnaces (F6028C and Others)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottom-element-for-barnstead-thermolyne-f6018-furnace-and-others</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-EL408X9.png?v=1784721969</image:loc>
      <image:title>Bottom Element for Barnstead/Thermolyne F6018 Furnace and others</image:title>
      <image:caption>Bottom Element for Barnstead/Thermolyne F6018 Furnace and others</image:caption>
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  </url>
  <url>
    <loc>https://preiser.com/products/element-assembly-for-cimerac-hot-plates-and-stirring-hot-plates-sp47235-and-others</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-EL472X1A.png?v=1784721974</image:loc>
      <image:title>Element Assembly for Cimerac Hot Plates and Stirring Hot Plates (SP47235 and Others)</image:title>
      <image:caption>Element Assembly for Cimerac Hot Plates and Stirring Hot Plates (SP47235 and Others)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/barnstead-thermolyne-furnace-heating-element-thermo-scientific-el480x1a</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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      <image:caption>Barnstead/Thermolyne Furnace Heating Element, Thermo Scientific, EL480X1A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/heating-element-top-and-bottom-thermo-scientific-el9x11</loc>
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  </url>
  <url>
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    <image:image>
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      <image:title>Barnstead/Thermolyne Heating Element, Side for Furnace, Thermo Scientific, EL9X12</image:title>
      <image:caption>Barnstead/Thermolyne Heating Element, Side for Furnace, Thermo Scientific, EL9X12</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/filter-ro-membrane-for-diamond-ro-system</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-FL1265X1.png?v=1784721980</image:loc>
      <image:title>Filter RO Membrane, for Diamond RO System</image:title>
      <image:caption>Filter RO Membrane, for Diamond RO System</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/8-32-zp-lock-washer-hex-nut-for-labline-max-q-shakers-thermo-scientific-fnx102</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-FNX102.png?v=1784721982</image:loc>
      <image:title>8-32 ZP Lock Washer Hex Nut for Labline/Max Q Shakers, Thermo Scientific, FNX102</image:title>
      <image:caption>8-32 ZP Lock Washer Hex Nut for Labline/Max Q Shakers, Thermo Scientific, FNX102</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/screw-8-32-x-3-4-stainless-steel-phillips-for-labline-max-q-shakers-thermo-scientific-fsx33</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-FSX33.png?v=1784721983</image:loc>
      <image:title>Screw, 8-32 X 3/4 Stainless Steel, Phillips, for Labline/Max Q Shakers, Thermo Scientific, FSX33</image:title>
      <image:caption>Screw, 8-32 X 3/4 Stainless Steel, Phillips, for Labline/Max Q Shakers, Thermo Scientific, FSX33</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/washer-flat-0-172-x-0-375-x-0-031-thermo-scientific-fwx7</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-FWX7.png?v=1784721985</image:loc>
      <image:title>Washer, Flat, 0.172 x 0.375 x 0.031, Thermo Scientific, FWX7</image:title>
      <image:caption>Washer, Flat, 0.172 x 0.375 x 0.031, Thermo Scientific, FWX7</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/barnstead-fuse-abc-25-x-1-25-20-amp-for-barnstead-thermolyne-furnaces-thermo-scientific-fzx29</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-FZX29.png?v=1784721986</image:loc>
      <image:title>Barnstead Fuse, ABC,.25 x 1.25 20 Amp for Barnstead/Thermolyne Furnaces, Thermo Scientific, FZX29</image:title>
      <image:caption>Barnstead Fuse, ABC,.25 x 1.25 20 Amp for Barnstead/Thermolyne Furnaces, Thermo Scientific, FZX29</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/hinge-thermo-scientific-hg356x1</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-HG356X1_02f586c1-fa2d-4d96-9dc0-a6760bd328de.png?v=1784721987</image:loc>
      <image:title>Hinge, Thermo Scientific, HG356X1</image:title>
      <image:caption>Hinge, Thermo Scientific, HG356X1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/hinge-thermo-scientific-hg356x2</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-HG356X2.png?v=1784721988</image:loc>
      <image:title>Hinge, Thermo Scientific, HG356X2</image:title>
      <image:caption>Hinge, Thermo Scientific, HG356X2</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/barnstead-thermolyne-jc221x1b-insulation-assembly</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-JC221X1B_120e1c60-20cf-4a26-81b9-a2a635c9d010.png?v=1784721990</image:loc>
      <image:title>Barnstead/Thermolyne JC221X1B Insulation Assembly</image:title>
      <image:caption>Barnstead/Thermolyne JC221X1B Insulation Assembly</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/insulator-thermo-scientific-js356x1</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-JS356X1.png?v=1784721991</image:loc>
      <image:title>Insulator, Thermo Scientific, JS356X1</image:title>
      <image:caption>Insulator, Thermo Scientific, JS356X1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/hearth-plate-for-large-chamber-industrial-furnace-11-x-9-94-x-0-5-in-thermo-scientific-ph42x1</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-PH42X1_4e081daa-9608-4df8-8c38-9675cd35b26f.png?v=1784721992</image:loc>
      <image:title>Hearth Plate for Large Chamber Industrial Furnace, 11 x 9.94 x 0.5 in., Thermo Scientific, PH42X1</image:title>
      <image:caption>Hearth Plate for Large Chamber Industrial Furnace, 11 x 9.94 x 0.5 in., Thermo Scientific, PH42X1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/hearth-tray-for-furnaces-thermo-scientific-ph480x1</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-PH480X1_e6c877df-2ec5-4b22-b80e-af2283a52fd8.png?v=1784721994</image:loc>
      <image:title>Hearth Tray for Furnaces, Thermo Scientific, PH480X1</image:title>
      <image:caption>Hearth Tray for Furnaces, Thermo Scientific, PH480X1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/nipple-thermo-scientific-pm408x2-for-90-8541-02-furnace</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-PM408X2.png?v=1784721995</image:loc>
      <image:title>Nipple, Thermo Scientific, PM408X2 for 90-8541-02 Furnace</image:title>
      <image:caption>Nipple, Thermo Scientific, PM408X2 for 90-8541-02 Furnace</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/end-cap-thermo-scientific-pm408x3-for-90-8541-02-furnace</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-PM408X3_584e8b0d-5b96-494c-ba2e-cda3415f9b60.png?v=1784721997</image:loc>
      <image:title>End Cap, Thermo Scientific PM408X3 for 90-8541-02 Furnace</image:title>
      <image:caption>End Cap, Thermo Scientific PM408X3 for 90-8541-02 Furnace</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/tee-thermo-scientific-pmx47-for-90-8541-02-furnace</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-PMX47_4fefd47b-98e9-4ba8-ae2d-c300f8e9c61b.png?v=1784721998</image:loc>
      <image:title>Tee, Thermo Scientific, PMX47 for 90-8541-02 Furnace</image:title>
      <image:caption>Tee, Thermo Scientific, PMX47 for 90-8541-02 Furnace</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/nipple-thermo-scientific-pmx48-for-90-8541-02-furnace</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-PMX48.png?v=1784721999</image:loc>
      <image:title>Nipple, Thermo Scientific, PMX48 For 90-8541-02 Furnace</image:title>
      <image:caption>Nipple, Thermo Scientific, PMX48 For 90-8541-02 Furnace</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/solid-state-relay-for-thermo-scientific-equipment-ovens-furnaces-shakers-autoclaves</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-RYX34.png?v=1785287234</image:loc>
      <image:title>Solid State Relay for Thermo Scientific Equipment (Ovens/Furnaces/Shakers/Autoclaves)</image:title>
      <image:caption>Solid State Relay for Thermo Scientific Equipment (Ovens/Furnaces/Shakers/Autoclaves)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/mechanical-relay-replaces-ryx10-for-thermolyne-barnstead-furnaces</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-RYX57_a041aa23-31ab-48fb-850b-c6dffd15a5de.png?v=1784722004</image:loc>
      <image:title>Mechanical Relay [Replaces RYX10] for Thermolyne/Barnstead Furnaces</image:title>
      <image:caption>Mechanical Relay [Replaces RYX10] for Thermolyne/Barnstead Furnaces</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/shaft-switch-rod</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-SF1058X1_c912d74c-7e97-4d4a-b108-8824732a12e7.png?v=1784722006</image:loc>
      <image:title>Shaft Switch Rod</image:title>
      <image:caption>Shaft Switch Rod</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/spring-extension-44odx6-13-stainless-steel-thermo-scientific-sp356x1</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-SP356X1.png?v=1784722008</image:loc>
      <image:title>Spring, Extension, 44ODX6.13, Stainless Steel, Thermo Scientific, SP356X1</image:title>
      <image:caption>Spring, Extension, 44ODX6.13, Stainless Steel, Thermo Scientific, SP356X1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/spring-extension-56odx7-13-ss-thermo-scientific-spx21</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-SPX21.png?v=1784722010</image:loc>
      <image:title>Spring, Extension 56ODX7.13 SS, Thermo Scientific, SPX21</image:title>
      <image:caption>Spring, Extension 56ODX7.13 SS, Thermo Scientific, SPX21</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/barnstead-float-switch-assembly-thermo-scientific-sw1268x1</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-SW1268X1.png?v=1784722011</image:loc>
      <image:title>Barnstead Float Switch Assembly, Thermo Scientific, SW1268X1</image:title>
      <image:caption>Barnstead Float Switch Assembly, Thermo Scientific, SW1268X1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/oven-switch-rocker-roc-250-30-dpst-model-ov1285060</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-SWX102.png?v=1784722012</image:loc>
      <image:title>Oven Switch, Rocker, ROC 250 30 DPST Model OV1285060</image:title>
      <image:caption>Oven Switch, Rocker, ROC 250 30 DPST Model OV1285060</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/barnstead-circuit-breaker-for-barnstead-classic-stills-thermo-scientific-swx103</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-SWX103.png?v=1784722014</image:loc>
      <image:title>Barnstead Circuit Breaker for Barnstead Classic Stills, Thermo Scientific, SWX103</image:title>
      <image:caption>Barnstead Circuit Breaker for Barnstead Classic Stills, Thermo Scientific, SWX103</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/switch-roc-125-16-dpst-l-for-themo-scientific-equipment-furnaces-ovens-shakers-water-purification-systems</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-SWX143.png?v=1784722015</image:loc>
      <image:title>Switch (ROC 125 16 DPST L-) for Themo Scientific Equipment (Furnaces/Ovens/Shakers/Water Purification Systems)</image:title>
      <image:caption>Switch (ROC 125 16 DPST L-) for Themo Scientific Equipment (Furnaces/Ovens/Shakers/Water Purification Systems)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/switch-lev-250-400-16-10-spst-for-barnstead-thermolyne-ovens-furnaces</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-SWX163.png?v=1784722017</image:loc>
      <image:title>Switch (LEV 250/400 16/10 SPST) for Barnstead/Thermolyne Ovens/Furnaces</image:title>
      <image:caption>Switch (LEV 250/400 16/10 SPST) for Barnstead/Thermolyne Ovens/Furnaces</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/switch-rocker-roc-125-250-15-10-rpo-representative-image</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-SWX68.png?v=1784722019</image:loc>
      <image:title>Switch, Rocker, ROC 125/250 15/10 RPO [Representative Image]</image:title>
      <image:caption>Switch, Rocker, ROC 125/250 15/10 RPO [Representative Image]</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/level-door-safety-switch-for-barnstead-thermolyne-furnaces</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-SWX78.png?v=1784722020</image:loc>
      <image:title>Level/Door Safety Switch for Barnstead/Thermolyne Furnaces</image:title>
      <image:caption>Level/Door Safety Switch for Barnstead/Thermolyne Furnaces</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/thermocouple-for-barnstead-thermolyne-furnaces</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-TC1165X1.png?v=1785287235</image:loc>
      <image:title>Thermocouple for Barnstead/Thermolyne Furnaces</image:title>
      <image:caption>Thermocouple for Barnstead/Thermolyne Furnaces</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/thermocouple-4-95-for-muffle-furnace-thermo-scientific-tc11x1a</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-TC11X1A.png?v=1784722023</image:loc>
      <image:title>Thermocouple, 4/95, for Muffle Furnace, Thermo Scientific, TC11X1A</image:title>
      <image:caption>Thermocouple, 4/95, for Muffle Furnace, Thermo Scientific, TC11X1A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/thermocouple-for-barnstead-thermolyne-furnaces-f6010-and-others</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-TC1249X1.png?v=1784722024</image:loc>
      <image:title>Thermocouple for Barnstead/Thermolyne Furnaces (F6010 and Others)</image:title>
      <image:caption>Thermocouple for Barnstead/Thermolyne Furnaces (F6010 and Others)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/thermocouple-assembly-type-k-for-thermolyne-furnaces-thermo-scientific-tc1256x1</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-TC1256X1.png?v=1785287237</image:loc>
      <image:title>Thermocouple Assembly, Type K for Thermolyne Furnaces, Thermo Scientific, TC1256X1</image:title>
      <image:caption>Thermocouple Assembly, Type K for Thermolyne Furnaces, Thermo Scientific, TC1256X1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/thermocouple-assembly-type-k</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-TC357X1A.png?v=1784722027</image:loc>
      <image:title>Thermocouple Assembly Type  K</image:title>
      <image:caption>Thermocouple Assembly Type  K</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/thermocouple-assembly-thermo-scientific-tc412x1a</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-TC412X1A.png?v=1784722028</image:loc>
      <image:title>Thermocouple Assembly, Thermo Scientific, TC412X1A</image:title>
      <image:caption>Thermocouple Assembly, Thermo Scientific, TC412X1A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/thermocouple-assembly-rpo-for-thermolyne-furnaces-thermo-scientific-tc745x1a</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-TC745X1A.png?v=1784722030</image:loc>
      <image:title>Thermocouple Assembly RPO for Thermolyne Furnaces, Thermo Scientific, TC745X1A</image:title>
      <image:caption>Thermocouple Assembly RPO for Thermolyne Furnaces, Thermo Scientific, TC745X1A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/thermocouple-assembly-for-barnstead-thermolyne-furnaces-fb1410m-and-others</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-TC746X1A.png?v=1785287238</image:loc>
      <image:title>Thermocouple Assembly for Barnstead/Thermolyne Furnaces (FB1410M and Others)</image:title>
      <image:caption>Thermocouple Assembly for Barnstead/Thermolyne Furnaces (FB1410M and Others)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/terminal-block-for-thermolyne-furnaces-thermo-scientific-trx96</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/THY-TRX96_9332c170-021b-49d8-8ab0-50102cca3e8f.png?v=1784722032</image:loc>
      <image:title>Terminal Block for Thermolyne Furnaces, Thermo Scientific, TRX96</image:title>
      <image:caption>Terminal Block for Thermolyne Furnaces, Thermo Scientific, TRX96</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/w-s-tyler-registered-1-2-diameter-shim-for-rx-29-rx-30-106582</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-106582_445c22d2-b128-421b-835d-2d9bfab2a5a8.png?v=1784722035</image:loc>
      <image:title>W.S. Tyler (Registered) 1/2&quot; Diameter Shim for RX-29 &amp; RX-30, 106582</image:title>
      <image:caption>W.S. Tyler (Registered) 1/2&quot; Diameter Shim for RX-29 &amp; RX-30, 106582</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/w-s-tyler-regsitered-hex-head-screw-3-8-16-x-0-62-long-for-rx-29-rx-30-number-52-on-diagram-114162</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-114162_ff6e4621-27c3-457d-b202-bf55e23fd803.png?v=1784722037</image:loc>
      <image:title>W.S. Tyler (Regsitered) Hex Head Screw, 3/8-16 X 0.62&quot; Long, for RX-29 &amp; RX-30, Number 52 on Diagram, 114162</image:title>
      <image:caption>W.S. Tyler (Regsitered) Hex Head Screw, 3/8-16 X 0.62&quot; Long, for RX-29 &amp; RX-30, Number 52 on Diagram, 114162</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/test-sieve-3-in-us-325-mesh-stainless-steel-frame-and-cloth-half-height-1728</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-1728-01.png?v=1784722038</image:loc>
      <image:title>Test Sieve, 3 in. US # 325 Mesh, Stainless Steel Frame and Cloth, Half Height, 1728</image:title>
      <image:caption>Test Sieve, 3 in. US # 325 Mesh, Stainless Steel Frame and Cloth, Half Height, 1728</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-no-500-full-height-stainless-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-6686_12c693d8-ae16-4f02-9c21-d4a9f38f1a9c.png?v=1784722041</image:loc>
      <image:title>12 in. Diameter Sieve, No. 500, Full Height Stainless Frame with Stainless Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, No. 500, Full Height Stainless Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-no-325-half-height-stainless-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-6850.png?v=1784722042</image:loc>
      <image:title>12 in. Diameter Sieve, No. 325, Half Height Stainless Frame with Stainless Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, No. 325, Half Height Stainless Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sieve-12-in-diameter-usa-2-in-opening-brass-frame-stainless-steel-cloth-full-height-w-s-tyler-6972</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-6972.png?v=1784722045</image:loc>
      <image:title>Sieve, 12 in. Diameter, USA 2 in. Opening, Brass Frame, Stainless Steel Cloth, Full Height, W.S. Tyler, 6972</image:title>
      <image:caption>Sieve, 12 in. Diameter, USA 2 in. Opening, Brass Frame, Stainless Steel Cloth, Full Height, W.S. Tyler, 6972</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-1-3-4-in-full-height-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-6973-01.png?v=1784722046</image:loc>
      <image:title>12 in. Diameter Sieve, 1-3/4 in., Full Height Brass Frame with Stainless Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, 1-3/4 in., Full Height Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-3-8-in-full-height-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-6984.png?v=1784722047</image:loc>
      <image:title>12 in. Diameter Sieve, 3/8 in., Full Height Brass Frame with Stainless Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, 3/8 in., Full Height Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-5-16-in-full-height-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-6985.png?v=1784722049</image:loc>
      <image:title>12 in. Diameter Sieve, 5/16 in., Full Height Brass Frame with Stainless Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, 5/16 in., Full Height Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-no-4-full-height-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-6989_ee34c004-571d-4c3b-a637-9b5b735499d6.png?v=1784722051</image:loc>
      <image:title>12 in. Diameter Sieve, No. 4, Full Height Brass Frame with Stainless Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, No. 4, Full Height Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-no-5-full-height-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-6990_e13a75c3-d495-4b7d-b97b-0a64dfab392e.png?v=1784722052</image:loc>
      <image:title>12 in. Diameter Sieve, No. 5, Full Height Brass Frame with Stainless Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, No. 5, Full Height Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-no-6-full-height-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-6991.png?v=1784722053</image:loc>
      <image:title>12 in. Diameter Sieve, No. 6, Full Height Brass Frame with Stainless Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, No. 6, Full Height Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/w-s-tyler-registered-sieve-12-diameter-brass-with-stainless-wire-full-height-no-7-6992</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-6992.png?v=1784722055</image:loc>
      <image:title>W.S. Tyler (Registered) Sieve 12&quot; Diameter Brass with Stainless Wire Full-Height No. 7, 6992</image:title>
      <image:caption>W.S. Tyler (Registered) Sieve 12&quot; Diameter Brass with Stainless Wire Full-Height No. 7, 6992</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-no-8-full-height-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-6993.png?v=1784722056</image:loc>
      <image:title>12 in. Diameter Sieve, No. 8, Full Height Brass Frame with Stainless Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, No. 8, Full Height Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/w-s-tyler-registered-sieve-12-full-height-brass-with-stainless-wire-no-12-6995</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-6995.png?v=1784722058</image:loc>
      <image:title>W.S. Tyler (Registered) Sieve 12&quot; Full-Height Brass with Stainless Wire No. 12, 6995</image:title>
      <image:caption>W.S. Tyler (Registered) Sieve 12&quot; Full-Height Brass with Stainless Wire No. 12, 6995</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-no-14-full-height-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-6996.png?v=1784722059</image:loc>
      <image:title>12 in. Diameter Sieve, No. 14, Full Height Brass Frame with Stainless Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, No. 14, Full Height Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-no-16-full-height-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-6997.png?v=1784722060</image:loc>
      <image:title>12 in. Diameter Sieve, No. 16, Full Height Brass Frame with Stainless Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, No. 16, Full Height Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-fine-series-no-18-brass-frame-with-stainless-cloth-full-height-3-1-4-in</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-6998.png?v=1784722062</image:loc>
      <image:title>12 in. Diameter Sieve, Fine Series, No. 18, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:title>
      <image:caption>12 in. Diameter Sieve, Fine Series, No. 18, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/w-s-tyler-registered-sieve-12-diameter-brass-with-stainless-wire-full-height-no-20-6999</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-6999.png?v=1784722063</image:loc>
      <image:title>W.S. Tyler (Registered) Sieve 12&quot; Diameter Brass with Stainless Wire Full-Height No. 20, 6999</image:title>
      <image:caption>W.S. Tyler (Registered) Sieve 12&quot; Diameter Brass with Stainless Wire Full-Height No. 20, 6999</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-fine-series-no-30-brass-frame-with-stainless-cloth-full-height-3-1-4-in</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7001.png?v=1784722064</image:loc>
      <image:title>12 in. Diameter Sieve, Fine Series, No. 30, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:title>
      <image:caption>12 in. Diameter Sieve, Fine Series, No. 30, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-fine-series-no-35-brass-frame-with-stainless-cloth-full-height-3-1-4-in</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7002.png?v=1784722066</image:loc>
      <image:title>12 in. Diameter Sieve, Fine Series, No. 35, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:title>
      <image:caption>12 in. Diameter Sieve, Fine Series, No. 35, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-fine-series-no-40-brass-frame-with-stainless-cloth-full-height-3-1-4-in</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7003.png?v=1784722067</image:loc>
      <image:title>12 in. Diameter Sieve, Fine Series, No. 40, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:title>
      <image:caption>12 in. Diameter Sieve, Fine Series, No. 40, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/test-sieve-12-in-us-45-mesh-brass-frame-with-stainless-steel-cloth-full-height-w-s-tyler-7004</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7004_6b9dbe11-8a67-4b2c-8038-3613a7c29aa0.png?v=1784722069</image:loc>
      <image:title>Test Sieve, 12 in. US # 45 Mesh, Brass Frame with Stainless Steel Cloth, Full Height, W.S. Tyler, 7004</image:title>
      <image:caption>Test Sieve, 12 in. US # 45 Mesh, Brass Frame with Stainless Steel Cloth, Full Height, W.S. Tyler, 7004</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-fine-series-no-50-brass-frame-with-stainless-cloth-full-height-3-1-4-in</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7005_cc1a1ea7-6d32-46b8-9530-89182da1f96e.png?v=1784722070</image:loc>
      <image:title>12 in. Diameter Sieve, Fine Series, No. 50, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:title>
      <image:caption>12 in. Diameter Sieve, Fine Series, No. 50, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/w-s-tyler-registered-sieve-12-diameter-brass-frame-with-stainless-wire-full-height-60-7066</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7006.png?v=1784722071</image:loc>
      <image:title>W.S. Tyler (Registered) Sieve 12&quot; Diameter, Brass Frame with Stainless Wire, Full-Height #60, 7066</image:title>
      <image:caption>W.S. Tyler (Registered) Sieve 12&quot; Diameter, Brass Frame with Stainless Wire, Full-Height #60, 7066</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-fine-series-no-70-brass-frame-with-stainless-cloth-full-height-3-1-4-in</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7007.png?v=1784722073</image:loc>
      <image:title>12 in. Diameter Sieve, Fine Series, No. 70, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:title>
      <image:caption>12 in. Diameter Sieve, Fine Series, No. 70, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/w-s-tyler-registered-sieve-12-diameter-brass-frame-with-stainless-wire-full-height-no-80-7008</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7008.png?v=1784722074</image:loc>
      <image:title>W.S. Tyler (Registered) Sieve 12&quot; Diameter Brass Frame with Stainless Wire Full-Height No.80, 7008</image:title>
      <image:caption>W.S. Tyler (Registered) Sieve 12&quot; Diameter Brass Frame with Stainless Wire Full-Height No.80, 7008</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-fine-series-no-100-brass-frame-with-stainless-cloth-full-height-3-1-4-in-w-s-tyler-7009</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7009.png?v=1784722076</image:loc>
      <image:title>12 in. Diameter Sieve, Fine Series, No. 100, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in., W.S. Tyler, 7009</image:title>
      <image:caption>12 in. Diameter Sieve, Fine Series, No. 100, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in., W.S. Tyler, 7009</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/brass-frame-stainless-cloth-12-in-full-height-no-170</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7012.png?v=1784722077</image:loc>
      <image:title>Brass Frame Stainless Cloth 12 in.  Full Height No. 170</image:title>
      <image:caption>Brass Frame Stainless Cloth 12 in.  Full Height No. 170</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-fine-series-no-200-brass-frame-with-stainless-cloth-full-height-3-1-4-in</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7013.png?v=1784722079</image:loc>
      <image:title>12 in. Diameter Sieve, Fine Series, No. 200, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:title>
      <image:caption>12 in. Diameter Sieve, Fine Series, No. 200, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-fine-series-no-230-brass-frame-with-stainless-cloth-full-height-3-1-4-in</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7014.png?v=1784722080</image:loc>
      <image:title>12 in. Diameter Sieve, Fine Series, No. 230, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:title>
      <image:caption>12 in. Diameter Sieve, Fine Series, No. 230, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-fine-series-no-270-brass-frame-with-stainless-cloth-full-height-3-1-4-in</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7015_892d3c93-7467-4e56-b910-a4fbc407d88b.png?v=1784722081</image:loc>
      <image:title>12 in. Diameter Sieve, Fine Series, No. 270, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:title>
      <image:caption>12 in. Diameter Sieve, Fine Series, No. 270, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-fine-series-no-325-brass-frame-with-stainless-cloth-full-height-3-1-4-in</loc>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>12 in. Diameter Sieve, Fine Series, No. 325, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:title>
      <image:caption>12 in. Diameter Sieve, Fine Series, No. 325, Brass Frame with Stainless Cloth, Full Height, 3-1/4 in.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-no-400-full-height-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7017.png?v=1784722084</image:loc>
      <image:title>12 in. Diameter Sieve, No. 400, Full Height Brass Frame with Stainless Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, No. 400, Full Height Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-no-500-full-height-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7018.png?v=1784722085</image:loc>
      <image:title>12 in. Diameter Sieve, No. 500, Full Height Brass Frame with Stainless Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, No. 500, Full Height Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-no-200-full-height-brass-frame-with-stainless-cloth-with-backing-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7019.png?v=1784722087</image:loc>
      <image:title>12 in. Diameter Sieve, No. 200, Full Height Brass Frame with Stainless Cloth, with Backing Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, No. 200, Full Height Brass Frame with Stainless Cloth, with Backing Cloth</image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7020_70ed83ca-6018-4567-9ee8-becc9afaec27.png?v=1784722088</image:loc>
      <image:title>12 in. Diameter Sieve, No. 325, Full Height Brass Frame with Stainless Cloth, with Backing Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, No. 325, Full Height Brass Frame with Stainless Cloth, with Backing Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-no-500-full-height-brass-frame-with-stainless-cloth-with-backing-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7090_158a4126-2618-44e9-9bfc-cc4635755777.png?v=1784722090</image:loc>
      <image:title>12 in. Diameter Sieve, No. 500, Full Height Brass Frame with Stainless Cloth, with Backing Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, No. 500, Full Height Brass Frame with Stainless Cloth, with Backing Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/12-in-diameter-sieve-1-4-in-intermediate-height-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7220.png?v=1784722091</image:loc>
      <image:title>12 in. Diameter Sieve, 1/4 in., Intermediate Height Brass Frame with Stainless Cloth</image:title>
      <image:caption>12 in. Diameter Sieve, 1/4 in., Intermediate Height Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/18-in-diameter-sieve-2-in-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7508-01.png?v=1784722093</image:loc>
      <image:title>18 in. Diameter Sieve, 2 in., Brass Frame with Stainless Cloth</image:title>
      <image:caption>18 in. Diameter Sieve, 2 in., Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/18-in-diameter-sieve-1-in-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7513-01_81f137ed-493f-4531-9831-75892f400655.png?v=1784722094</image:loc>
      <image:title>18 in. Diameter Sieve, 1 in., Brass Frame with Stainless Cloth</image:title>
      <image:caption>18 in. Diameter Sieve, 1 in., Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/18-in-diameter-test-sieve-brass-frame-stainless-steel-cloth-3-4-in-19-mm</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7515-01.png?v=1784722096</image:loc>
      <image:title>18 in Diameter Test Sieve, Brass Frame/Stainless Steel Cloth, 3/4 in (19 mm)</image:title>
      <image:caption>18 in Diameter Test Sieve, Brass Frame/Stainless Steel Cloth, 3/4 in (19 mm)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/18-in-diameter-sieve-5-8-in-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7516-01_eb7b0c5d-b4a6-465e-b784-7b51968f2816.png?v=1784722097</image:loc>
      <image:title>18 in. Diameter Sieve, 5/8 in., Brass Frame with Stainless Cloth</image:title>
      <image:caption>18 in. Diameter Sieve, 5/8 in., Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7518-01.png?v=1784722099</image:loc>
      <image:title>18 in. Diameter Sieve, 1/2 in., Brass Frame with Stainless Cloth</image:title>
      <image:caption>18 in. Diameter Sieve, 1/2 in., Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7520-01_bde84997-a86c-4c28-b55d-4aa515f581fd.png?v=1784722100</image:loc>
      <image:title>18 in. Diameter Sieve, 3/8 in., Brass Frame with Stainless Cloth</image:title>
      <image:caption>18 in. Diameter Sieve, 3/8 in., Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/18-in-diameter-sieve-1-4-in-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7523-01.png?v=1784722101</image:loc>
      <image:title>18 in. Diameter Sieve, 1/4 in., Brass Frame with Stainless Cloth</image:title>
      <image:caption>18 in. Diameter Sieve, 1/4 in., Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/18-in-diameter-sieve-no-18-brass-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-7534-01.png?v=1784722103</image:loc>
      <image:title>18 in. Diameter Sieve, No. 18, Brass Frame with Stainless Cloth</image:title>
      <image:caption>18 in. Diameter Sieve, No. 18, Brass Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/3-in-diameter-bottom-pan-full-height-stainless</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-8407.png?v=1784722104</image:loc>
      <image:title>3 in. Diameter Bottom Pan, Full Height Stainless</image:title>
      <image:caption>3 in. Diameter Bottom Pan, Full Height Stainless</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/3-in-diameter-top-cover-with-ring-stainless</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-8412.png?v=1784722105</image:loc>
      <image:title>3 in. Diameter Top Cover, with Ring, Stainless</image:title>
      <image:caption>3 in. Diameter Top Cover, with Ring, Stainless</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sieve-cleaning-brush-for-100-mesh-and-finer-sieves-nylon-bristles</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-8577.png?v=1784722107</image:loc>
      <image:title>Sieve Cleaning Brush for 100 mesh and Finer Sieves, Nylon Bristles</image:title>
      <image:caption>Sieve Cleaning Brush for 100 mesh and Finer Sieves, Nylon Bristles</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/200-mm-airjet-test-sieve-no-325-stainless-frame-with-stainless-cloth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-9011.png?v=1784722108</image:loc>
      <image:title>200 mm AirJet Test Sieve, No. 325, Stainless Frame with Stainless Cloth</image:title>
      <image:caption>200 mm AirJet Test Sieve, No. 325, Stainless Frame with Stainless Cloth</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/alpine-air-jet-test-sieve-us-70-mesh-212-micron-ws-tyler-9252</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-9252_cc79c942-0baf-4d6a-8349-b7caf9b84cc5.png?v=1784722111</image:loc>
      <image:title>Alpine Air Jet Test Sieve, US # 70 Mesh (212 Micron), WS Tyler, 9252</image:title>
      <image:caption>Alpine Air Jet Test Sieve, US # 70 Mesh (212 Micron), WS Tyler, 9252</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/alpine-air-jet-test-sieve-no-635-for-e200ls-alpine-air-jet-sieve-system-w-s-tyler-9415</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-9415.png?v=1784722112</image:loc>
      <image:title>Alpine Air Jet Test Sieve, No. 635, for e200LS Alpine Air Jet Sieve System, W.S. Tyler, 9415</image:title>
      <image:caption>Alpine Air Jet Test Sieve, No. 635, for e200LS Alpine Air Jet Sieve System, W.S. Tyler, 9415</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/lab-certification-plus-astm-e11-calibration-grade-with-certificate-w-s-tyler-9992</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-9992.png?v=1784722113</image:loc>
      <image:title>Lab Certification Plus, ASTM E11, Calibration Grade, with Certificate, W.S. Tyler, 9992</image:title>
      <image:caption>Lab Certification Plus, ASTM E11, Calibration Grade, with Certificate, W.S. Tyler, 9992</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ro-tap-motor-standard-1-4-hp-115-230-v-60-50-hz-1-phase-p-1500-23</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Ro-Tap Motor, Standard, 1/4 HP, 115/230, V 60/50 Hz, 1 Phase, P-1500-23</image:title>
      <image:caption>Ro-Tap Motor, Standard, 1/4 HP, 115/230, V 60/50 Hz, 1 Phase, P-1500-23</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/timer-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10009.png?v=1784722117</image:loc>
      <image:title>Timer for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Timer for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/belt-for-rx24-w-s-tyler-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10017.png?v=1784722118</image:loc>
      <image:title>Belt for RX24 W. S. Tyler (Registered) Sieve Shaker</image:title>
      <image:caption>Belt for RX24 W. S. Tyler (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/tube-spacer-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10028_0ba9a46e-9d58-4d26-a8ef-3d26d6937add.png?v=1784722119</image:loc>
      <image:title>Tube Spacer for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, W.S. Tyler, R-10028</image:title>
      <image:caption>Tube Spacer for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, W.S. Tyler, R-10028</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cam-shoulder-screw-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-23-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10029.png?v=1784722121</image:loc>
      <image:title>Cam Shoulder Screw for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 23 on Diagram</image:title>
      <image:caption>Cam Shoulder Screw for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 23 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/coupling-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-32-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10030.png?v=1784722122</image:loc>
      <image:title>Coupling for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 32 on Diagram</image:title>
      <image:caption>Coupling for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 32 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/block-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-15-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10032.png?v=1784722123</image:loc>
      <image:title>Block for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 15 on Diagram</image:title>
      <image:caption>Block for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 15 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/tie-rod-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-29-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10033_3b99f96f-9e9f-4246-9300-b28a6e33b76c.png?v=1784722125</image:loc>
      <image:title>Tie Rod for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 29 on Diagram</image:title>
      <image:caption>Tie Rod for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 29 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/eccentric-disc-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10034_54f61bab-55f9-48b8-8ec9-0e799b872175.png?v=1784722127</image:loc>
      <image:title>Eccentric Disc for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Eccentric Disc for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/hammer-pin-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10035.png?v=1784722128</image:loc>
      <image:title>Hammer Pin for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Hammer Pin for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/lift-rod-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-6-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10036_35c0270c-2f8e-4a06-bb75-1e8f8b0c3f13.png?v=1784722130</image:loc>
      <image:title>Lift Rod for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 6 on Diagram</image:title>
      <image:caption>Lift Rod for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 6 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/upper-main-shaft-washer-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-7-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10038_1592204d-aa35-49df-a016-0012dabcd950.png?v=1784722132</image:loc>
      <image:title>Upper Main Shaft Washer for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 7 on Diagram</image:title>
      <image:caption>Upper Main Shaft Washer for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 7 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/main-shaft-lower-key-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-25-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10039_be073b01-5055-4c2e-959d-609318257c23.png?v=1785287239</image:loc>
      <image:title>Main Shaft Lower Key for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 25 on Diagram</image:title>
      <image:caption>Main Shaft Lower Key for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 25 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/main-shaft-key-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-24-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10042.png?v=1784722135</image:loc>
      <image:title>Main Shaft Key for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 24 on Diagram</image:title>
      <image:caption>Main Shaft Key for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 24 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sprocket-17-teeth-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10048.png?v=1784722137</image:loc>
      <image:title>Sprocket, 17 Teeth, for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Sprocket, 17 Teeth, for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/rubber-channel-7-long-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10052.png?v=1784722138</image:loc>
      <image:title>Rubber Channel (7 Long) for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Rubber Channel (7 Long) for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/shim-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-44-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10055.png?v=1785287241</image:loc>
      <image:title>Shim for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 44 on Diagram</image:title>
      <image:caption>Shim for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 44 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/drive-belt-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10058.png?v=1784722140</image:loc>
      <image:title>Drive Belt for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Drive Belt for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/flange-bearing-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10061.png?v=1785287242</image:loc>
      <image:title>Flange Bearing for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Flange Bearing for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bearing-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10062.png?v=1785287243</image:loc>
      <image:title>Bearing for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Bearing for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bearing-flange-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10063.png?v=1784722145</image:loc>
      <image:title>Bearing, Flange for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Bearing, Flange for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/steel-bushing-for-w-s-tyler-registered-ro-tap-registered-sieve-shakernumber-38-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10065.png?v=1784722147</image:loc>
      <image:title>Steel Bushing for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve ShakerNumber 38 on Diagram</image:title>
      <image:caption>Steel Bushing for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve ShakerNumber 38 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cork-plug-rx-29-94-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10066A.png?v=1784722148</image:loc>
      <image:title>Cork Plug (RX-29/94) for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Cork Plug (RX-29/94) for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/timer-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-r-10069</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10069_11c05ba2-840b-4b5a-8194-2ace06ab6698.png?v=1784722150</image:loc>
      <image:title>Timer for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker (R-10069)</image:title>
      <image:caption>Timer for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker (R-10069)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sprocket-14-teeth-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10070.png?v=1784722151</image:loc>
      <image:title>Sprocket, 14 Teeth, for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Sprocket, 14 Teeth, for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sprocket-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10071.png?v=1784722152</image:loc>
      <image:title>Sprocket for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Sprocket for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/clamp-screw-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-47-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10079.png?v=1784722154</image:loc>
      <image:title>Clamp Screw for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 47 on Diagram</image:title>
      <image:caption>Clamp Screw for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 47 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sound-enclosure-cover-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R10099_08f1d973-27e7-44fb-83f5-6cfdd2814324.png?v=1784722155</image:loc>
      <image:title>Sound Enclosure Cover for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Sound Enclosure Cover for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/base-plate-for-rx-8-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R193-01.png?v=1784722156</image:loc>
      <image:title>Base Plate for RX-8 W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Base Plate for RX-8 W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/support-rod-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R200-01.png?v=1784722158</image:loc>
      <image:title>Support Rod for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Support Rod for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bearing-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-r-20004</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R20004.png?v=1784722159</image:loc>
      <image:title>Bearing for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker (R-20004)</image:title>
      <image:caption>Bearing for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker (R-20004)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/backup-plate-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R20019.png?v=1784722161</image:loc>
      <image:title>Backup Plate for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Backup Plate for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bearing-plate-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R20020.png?v=1784722162</image:loc>
      <image:title>Bearing Plate for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Bearing Plate for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/hammer-block-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R20023_675672c3-008e-4181-82fe-45b5833c88c7.png?v=1784722164</image:loc>
      <image:title>Hammer Block for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Hammer Block for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/main-shaft-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-8-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R20027.png?v=1785287245</image:loc>
      <image:title>Main Shaft for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 8 on Diagram</image:title>
      <image:caption>Main Shaft for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 8 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/hammer-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R20029.png?v=1784722166</image:loc>
      <image:title>Hammer for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Hammer for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/shield-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R20033.png?v=1784722169</image:loc>
      <image:title>Shield for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Shield for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cam-gear-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R20039.png?v=1784722170</image:loc>
      <image:title>Cam Gear for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Cam Gear for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/wrench-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R20081.png?v=1784722171</image:loc>
      <image:title>Wrench for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Wrench for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/w-s-tyler-registered-adjustable-handle-2-pk-for-rx-29-rx-30-sieve-shakers-number-54-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R20082_69ff3df8-a9e4-42d9-bee5-76b895d2f1c8.png?v=1784722172</image:loc>
      <image:title>W.S. Tyler (Registered)  Adjustable Handle, 2/PK for RX-29 &amp; RX-30  Sieve Shakers, Number 54 on Diagram</image:title>
      <image:caption>W.S. Tyler (Registered)  Adjustable Handle, 2/PK for RX-29 &amp; RX-30  Sieve Shakers, Number 54 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sieve-cover-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R300011.png?v=1784722174</image:loc>
      <image:title>Sieve Cover for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Sieve Cover for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sieve-support-plate-rx29-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-17-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R30006.png?v=1784722175</image:loc>
      <image:title>Sieve Support Plate (RX29) for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 17 on Diagram</image:title>
      <image:caption>Sieve Support Plate (RX29) for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 17 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cover-for-sieve-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R30007.png?v=1784722177</image:loc>
      <image:title>Cover for Sieve for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Cover for Sieve for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/upper-carrying-plate-rx29-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R30008_404e2563-9628-45a9-a8ed-265cfdf8a28e.png?v=1785287247</image:loc>
      <image:title>Upper Carrying Plate (RX29) for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Upper Carrying Plate (RX29) for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/upper-carrying-plate-aluminum-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R30008-1.png?v=1784722180</image:loc>
      <image:title>Upper Carrying Plate (Aluminum) for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Upper Carrying Plate (Aluminum) for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/lower-carrying-plate-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-10-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R30009.png?v=1784722181</image:loc>
      <image:title>Lower Carrying Plate for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 10 on Diagram</image:title>
      <image:caption>Lower Carrying Plate for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 10 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/rotating-guard-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-5-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R30010.png?v=1784722183</image:loc>
      <image:title>Rotating Guard for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 5 on Diagram</image:title>
      <image:caption>Rotating Guard for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 5 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/timing-belt-pulley-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R30015.png?v=1784722185</image:loc>
      <image:title>Timing Belt Pulley for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Timing Belt Pulley for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/motor-adapter-30-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R30018.png?v=1784722186</image:loc>
      <image:title>Motor Adapter #30 for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Motor Adapter #30 for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sheet-guard-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-4-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R30019_ba8976fe-b617-41c7-87db-dae2cf5117bd.png?v=1785287247</image:loc>
      <image:title>Sheet Guard for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 4 on Diagram</image:title>
      <image:caption>Sheet Guard for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 4 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/support-clamp-bar-18-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R30023.png?v=1784722189</image:loc>
      <image:title>Support Clamp Bar #18 for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Support Clamp Bar #18 for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/pedestal-cover-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-33-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R40011.png?v=1784722190</image:loc>
      <image:title>Pedestal Cover for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 33 on Diagram</image:title>
      <image:caption>Pedestal Cover for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 33 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/electronic-timer-60-hz-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-41-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R40029.png?v=1784722191</image:loc>
      <image:title>Electronic Timer, 60 Hz, for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 41 on Diagram</image:title>
      <image:caption>Electronic Timer, 60 Hz, for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 41 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/timer-digital-220-v-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker-number-41-on-diagram</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R40037.png?v=1784722193</image:loc>
      <image:title>Timer, Digital, 220 V, for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 41 on Diagram</image:title>
      <image:caption>Timer, Digital, 220 V, for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker, Number 41 on Diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/timer-conversion-kit-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R40038.png?v=1784722194</image:loc>
      <image:title>Timer Conversion Kit for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Timer Conversion Kit for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/conversion-kit-for-type-b-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R40038X.png?v=1784722195</image:loc>
      <image:title>Conversion Kit for Type B for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Conversion Kit for Type B for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/timer-mounting-clip-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R40040.png?v=1784722197</image:loc>
      <image:title>Timer Mounting Clip for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Timer Mounting Clip for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/test-stand-for-sound-enclosure-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-R40041_1105e8b6-8ed1-4942-8438-10ab755d4b39.png?v=1784722198</image:loc>
      <image:title>Test Stand For Sound Enclosure  for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Test Stand For Sound Enclosure  for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/rx29-lab-kit-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-RX29LABKIT_1776c042-7b30-4f1c-906a-2b5c36991ea1.png?v=1784722199</image:loc>
      <image:title>RX29 LAB KIT  for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>RX29 LAB KIT  for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/adapter-to-8-for-w-s-tyler-registered-ro-tap-registered-sieve-shaker</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-RX32.png?v=1784722201</image:loc>
      <image:title>Adapter to 8  for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:title>
      <image:caption>Adapter to 8  for W. S. Tyler (Registered) Ro-Tap (Registered) Sieve Shaker</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/w-s-tyler-registered-grommet-for-rx-29-rx-30-number-2-31-on-diagram-za11167</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-ZA11167.png?v=1784722202</image:loc>
      <image:title>W.S. Tyler (Registered) Grommet for RX-29 &amp; RX-30, Number 2 &amp;31 on Diagram, ZA11167</image:title>
      <image:caption>W.S. Tyler (Registered) Grommet for RX-29 &amp; RX-30, Number 2 &amp;31 on Diagram, ZA11167</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/w-s-tyler-registered-lock-nut-1-2-13-for-rx-29-rx-30-rx-94-part-49-on-diagram-zf10222</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-ZF10222.png?v=1784722207</image:loc>
      <image:title>W.S. Tyler (Registered) Lock Nut 1/2&quot; -13 for RX-29, RX-30 &amp; RX-94, Part 49 on Diagram, ZF10222</image:title>
      <image:caption>W.S. Tyler (Registered) Lock Nut 1/2&quot; -13 for RX-29, RX-30 &amp; RX-94, Part 49 on Diagram, ZF10222</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/w-s-tyler-registered-3-8-16-x-3-4-in-socket-cap-screw-for-rx-29-rx-30-rx-94-parts-26-51-on-diagram-zf10241</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-ZF10241.png?v=1784722208</image:loc>
      <image:title>W.S. Tyler (Registered) 3/8 -16 x 3/4 in. Socket Cap Screw for RX-29, RX-30 &amp; RX-94, Parts 26 &amp; 51 on Diagram, ZF10241</image:title>
      <image:caption>W.S. Tyler (Registered) 3/8 -16 x 3/4 in. Socket Cap Screw for RX-29, RX-30 &amp; RX-94, Parts 26 &amp; 51 on Diagram, ZF10241</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/w-s-tyler-regsitered-5-16-24-x-1-1-4-in-long-socket-head-cap-screw-for-rx-29-rx-30-rx-94-parts-52-53-on-diagram-zf10251</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-ZF10251_4b0a935c-5d20-472c-8301-0a91a2b6164e.png?v=1784722210</image:loc>
      <image:title>W.S. Tyler (Regsitered) 5/16-24 x 1-1/4 in. Long Socket Head Cap Screw for RX-29, RX-30 &amp; RX-94, Parts 52 &amp; 53 on Diagram, ZF10251</image:title>
      <image:caption>W.S. Tyler (Regsitered) 5/16-24 x 1-1/4 in. Long Socket Head Cap Screw for RX-29, RX-30 &amp; RX-94, Parts 52 &amp; 53 on Diagram, ZF10251</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/w-s-tyler-registered-3-8-x-16-nc-nut-zf10261b</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-ZF10261B.png?v=1784722211</image:loc>
      <image:title>W.S. Tyler (Registered) 3/8 x 16 NC Nut, ZF10261B</image:title>
      <image:caption>W.S. Tyler (Registered) 3/8 x 16 NC Nut, ZF10261B</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/w-s-tyler-registered-3-8-in-i-d-x-1-50-in-o-d-fender-washer-for-ro-tap-registered-parts-54-56-on-diagram-zf10271</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/TYL-ZF10271.png?v=1784722213</image:loc>
      <image:title>W.S. Tyler (Registered) 3/8 in. I.D, X 1.50 in. O.D. Fender Washer for Ro-Tap (Registered), Parts 54 &amp; 56 on Diagram, ZF10271</image:title>
      <image:caption>W.S. Tyler (Registered) 3/8 in. I.D, X 1.50 in. O.D. Fender Washer for Ro-Tap (Registered), Parts 54 &amp; 56 on Diagram, ZF10271</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/unitron-15200-zsm-stereo-microscope-body-4x-10x</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/UNT-15200-01.png?v=1784722214</image:loc>
      <image:title>Unitron 15200 ZSM Stereo Microscope Body, 4X/10X</image:title>
      <image:caption>Unitron 15200 ZSM Stereo Microscope Body, 4X/10X</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/pen-ray-mercury-lamp-emits-mercury-specturm-with-the-primary-energy-at-254-narrow-mouth</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/UVP-90001201.png?v=1784722215</image:loc>
      <image:title>Pen-Ray Mercury Lamp, Emits Mercury specturm with the primary energy at 254 Narrow-Mouth.</image:title>
      <image:caption>Pen-Ray Mercury Lamp, Emits Mercury specturm with the primary energy at 254 Narrow-Mouth.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/model-ps-1-power-supply-for-pen-ray-uv-lamp-115-v-analytik-jena-llc-99-0055-01</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/UVP-99005501.png?v=1784722217</image:loc>
      <image:title>Model PS-1 Power Supply for Pen-Ray UV Lamp, 115 V, Analytik Jena LLC, 99-0055-01</image:title>
      <image:caption>Model PS-1 Power Supply for Pen-Ray UV Lamp, 115 V, Analytik Jena LLC, 99-0055-01</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/stand-for-uvp-handheld-uv-lamp</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/UVP-J129.png?v=1784722218</image:loc>
      <image:title>Stand for UVP Handheld UV Lamp</image:title>
      <image:caption>Stand for UVP Handheld UV Lamp</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/autoclavable-plain-polypropylene-biohazard-bags-24-x-36-case-of-200-bags</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/V-14220-104.png?v=1784722220</image:loc>
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      <image:caption>Autoclavable, Plain, Polypropylene Biohazard Bags, 24 x 36 (Case of 200 bags)</image:caption>
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  <url>
    <loc>https://preiser.com/products/blood-cell-counter-polystrene-vials-with-caps-25-ml-720-pk</loc>
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    <changefreq>daily</changefreq>
    <image:image>
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  <url>
    <loc>https://preiser.com/products/filter-paper-quantitative-grade-454-11-cm-package-of-100</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Filter Paper, Quantitative, Grade 454, 11 cm (Package of 100)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/disposable-serological-pipets-polystyrene-sterile-plugged-50-ml-case-of-100-representative-image</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/V-53283-712.png?v=1784722224</image:loc>
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      <image:caption>Disposable Serological Pipets, Polystyrene, Sterile, Plugged, 50 mL (Case of 100) [REPRESENTATIVE IMAGE]</image:caption>
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  <url>
    <loc>https://preiser.com/products/filter-end-fitting-2-um-porosity-sold-by-each-each-pk-of-10</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/V-53498-598.png?v=1784722225</image:loc>
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      <image:caption>Filter End Fitting, 2 um Porosity (Sold by Each / Each = PK of 10)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cap-safe-t-flex-white-for-16-mm-blood-collecting-and-culture-tubes-features-a-unique-flexible-over-locking-design</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/V-60828-760.png?v=1784722227</image:loc>
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      <image:caption>Cap, Safe-T-Flex, White, for 16 mm Blood Collecting and Culture Tubes. Features a Unique, Flexible, Over-Locking Design</image:caption>
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  </url>
  <url>
    <loc>https://preiser.com/products/caps-safe-t-flex%C2%AE-snap-on-polyethylene-for-culture-tubes-16-mm-lavendar-1000-pk-60828-764</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Caps, Safe-T-Flex® Snap-On, Polyethylene, for Culture Tubes, 16 mm, Lavendar, 1000/PK, 60828-764</image:caption>
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  </url>
  <url>
    <loc>https://preiser.com/products/vwr-buchner-filter-funnel-320-ml-representative-image</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/V-89038-124.png?v=1784722231</image:loc>
      <image:title>VWR Buchner Filter Funnel, 320 mL, [Representative Image]</image:title>
      <image:caption>VWR Buchner Filter Funnel, 320 mL, [Representative Image]</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/filling-solution-for-low-ionic-strength-electrodes-beckman-coulter-4-x-100-ml-bottles-ea</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/V-BK598943_e6baecb3-da3f-40cb-81b8-0a1ecd15c19d.png?v=1784722233</image:loc>
      <image:title>Filling Solution for Low Ionic Strength Electrodes, Beckman-Coulter, 4 x 100 mL Bottles/EA</image:title>
      <image:caption>Filling Solution for Low Ionic Strength Electrodes, Beckman-Coulter, 4 x 100 mL Bottles/EA</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/optifix%C2%AE-adapters-millipore-sigma-38-mm</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/V-EM109038-1.png?v=1784722236</image:loc>
      <image:title>Optifix® Adapters, Millipore Sigma, 38 mm</image:title>
      <image:caption>Optifix® Adapters, Millipore Sigma, 38 mm</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/titanium-standard-sold-by-each-each-100-ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/V-ICP-022.png?v=1784722238</image:loc>
      <image:title>Titanium Standard (Sold by Each / Each = 100 mL)</image:title>
      <image:caption>Titanium Standard (Sold by Each / Each = 100 mL)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bailer-single-non-weighted-1-5-in-diameter-x-36-in-polyethylene</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/VOS-91946-S_e70868a5-ce14-44a6-ac8b-d026245e7d60.png?v=1784722241</image:loc>
      <image:title>Bailer, Single, Non-Weighted, 1.5 in. Diameter x 36 in., Polyethylene</image:title>
      <image:caption>Bailer, Single, Non-Weighted, 1.5 in. Diameter x 36 in., Polyethylene</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bailer-single-weighted-1-5-in-diameter-x-36-in-l</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/VOS-91946-SW.png?v=1784722242</image:loc>
      <image:title>Bailer, Single, Weighted, 1.5 in. Diameter x 36 in. L</image:title>
      <image:caption>Bailer, Single, Weighted, 1.5 in. Diameter x 36 in. L</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/solo-bare-wax-coated-paper-cup-3-oz-5000-cs-44bb-jd110</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WBS-76044BARE.png?v=1784722253</image:loc>
      <image:title>Solo Bare Wax-Coated Paper Cup, 3 oz., 5000/CS, 44BB-JD110</image:title>
      <image:caption>Solo Bare Wax-Coated Paper Cup, 3 oz., 5000/CS, 44BB-JD110</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/amg-mcv-2305-video-view-microscope-withcamera-lcd-display</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WES-MCV-2305.png?v=1784722255</image:loc>
      <image:title>Video View Microscope with Camera &amp; LCD Display, Advanced Microscopy Group, MCV-2305</image:title>
      <image:caption>Video View Microscope with Camera &amp; LCD Display, Advanced Microscopy Group, MCV-2305</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-narrow-mouth-amber-borosilicate-glass-with-hooded-ground-glass-stopper-100-ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-215255.png?v=1784722256</image:loc>
      <image:title>Bottle, Narrow Mouth, Amber Borosilicate Glass, with Hooded Ground Glass Stopper, 100 mL</image:title>
      <image:caption>Bottle, Narrow Mouth, Amber Borosilicate Glass, with Hooded Ground Glass Stopper, 100 mL</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-narrow-mouth-amber-borosilicate-glass-with-hooded-ground-glass-stopper-250-ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-215257.png?v=1784722257</image:loc>
      <image:title>Bottle, Narrow Mouth, Amber Borosilicate Glass, with Hooded Ground Glass Stopper, 250 mL</image:title>
      <image:caption>Bottle, Narrow Mouth, Amber Borosilicate Glass, with Hooded Ground Glass Stopper, 250 mL</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/125-ml-narrow-mouth-media-bottle-clear-type-i-graduated-with-polyethylene-liner-wheaton-219715</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-219715.png?v=1784722259</image:loc>
      <image:title>125 mL Narrow Mouth Media Bottle, Clear, Type I, Graduated, with Polyethylene Liner, Wheaton 219715</image:title>
      <image:caption>125 mL Narrow Mouth Media Bottle, Clear, Type I, Graduated, with Polyethylene Liner, Wheaton 219715</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/125-ml-narrow-mouth-media-bottle-clear-type-i-graduated-with-ptfe-liner-wheaton-219815</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-219815_a8f17e41-41da-44d6-9d8a-d5aafb8f7d37.png?v=1784722260</image:loc>
      <image:title>125 mL Narrow Mouth Media Bottle, Clear, Type I, Graduated, with PTFE Liner, Wheaton 219815</image:title>
      <image:caption>125 mL Narrow Mouth Media Bottle, Clear, Type I, Graduated, with PTFE Liner, Wheaton 219815</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/20-mm-stopper-st-plug-13x20-red-rubber-1000-cs</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-224100-172_d7d57151-baf9-4c25-9c05-c927a421dd03.png?v=1784722262</image:loc>
      <image:title>20 mm Stopper, St Plug (13X20) Red Rubber, 1000/CS</image:title>
      <image:caption>20 mm Stopper, St Plug (13X20) Red Rubber, 1000/CS</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/20-mm-seal-open-top-aluminum-natural-unlined-1000-cs</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-224178-01.png?v=1784722263</image:loc>
      <image:title>20 mm Seal, Open Top, Aluminum, Natural, Unlined, 1000/CS</image:title>
      <image:caption>20 mm Seal, Open Top, Aluminum, Natural, Unlined, 1000/CS</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/lined-aluminum-seal-ptfe-red-rubber-center-disc-tear-out-natural-20-mm-1000-cs-wheaton-224223-01</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-224223-01.png?v=1784722264</image:loc>
      <image:title>Lined Aluminum Seal, PTFE / Red Rubber, Center Disc Tear-Out, Natural, 20 mm, 1000/CS, Wheaton, 224223-01</image:title>
      <image:caption>Lined Aluminum Seal, PTFE / Red Rubber, Center Disc Tear-Out, Natural, 20 mm, 1000/CS, Wheaton, 224223-01</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/40-ml-sample-vial-clear-24-400-thread-finish-no-cap-200-cs</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-224833.png?v=1784722265</image:loc>
      <image:title>40 mL Sample Vial, Clear, 24-400 Thread Finish, No Cap, 200/CS</image:title>
      <image:caption>40 mL Sample Vial, Clear, 24-400 Thread Finish, No Cap, 200/CS</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/wheaton-e-z-vial-autosampler-gc-vials-with-snap-ring-12-x-32-mm-clear-1000-cs-dwk-225179</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-225179.png?v=1784722268</image:loc>
      <image:title>WHEATON E-Z VIAL Autosampler / GC Vials  With Snap Ring 12 x 32 mm, Clear,1000,/CS, DWK, 225179</image:title>
      <image:caption>WHEATON E-Z VIAL Autosampler / GC Vials  With Snap Ring 12 x 32 mm, Clear,1000,/CS, DWK, 225179</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/b-o-d-bottle-with-glass-pennyhead-stopper-un-numbered-300-ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-227497-00G.png?v=1784722269</image:loc>
      <image:title>B.O.D Bottle, with Glass Pennyhead Stopper, Un-numbered, 300 mL.</image:title>
      <image:caption>B.O.D Bottle, with Glass Pennyhead Stopper, Un-numbered, 300 mL.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-b-o-d-glass-with-pennyhead-stopper-300-ml-49-72-case-of-24-wheaton-industries-inc-227497-03g</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-227497-03G.png?v=1784722270</image:loc>
      <image:title>Bottle, B.O.D, Glass with Pennyhead Stopper, 300 mL (#49-72) (Case of 24), Wheaton Industries, Inc., 227497-03G</image:title>
      <image:caption>Bottle, B.O.D, Glass with Pennyhead Stopper, 300 mL (#49-72) (Case of 24), Wheaton Industries, Inc., 227497-03G</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-b-o-d-glass-with-pennyhead-stopper-300-ml-73-96-case-of-24-wheaton-industries-inc-227497-04g</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-227497-04G.png?v=1784722272</image:loc>
      <image:title>Bottle, B.O.D, Glass with Pennyhead Stopper, 300 mL (#73-96) (Case of 24), Wheaton Industries, Inc., 227497-04G</image:title>
      <image:caption>Bottle, B.O.D, Glass with Pennyhead Stopper, 300 mL (#73-96) (Case of 24), Wheaton Industries, Inc., 227497-04G</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottle-b-o-d-glass-with-robotic-stopper-300-ml-73-96-case-of-24-wheaton-industries-inc-227497-04</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-22749704.png?v=1784722272</image:loc>
      <image:title>Bottle, B.O.D, Glass with Robotic Stopper, 300 mL (#73-96) (Case of 24), Wheaton Industries, Inc., 227497-04</image:title>
      <image:caption>Bottle, B.O.D, Glass with Robotic Stopper, 300 mL (#73-96) (Case of 24), Wheaton Industries, Inc., 227497-04</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/300-ml-bod-bottle-217-240-with-glass-robotic-stopper-24-cs-wheaton-227497-10</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-22749710.png?v=1784722274</image:loc>
      <image:title>300 mL BOD Bottle, 217-240, with Glass Robotic Stopper, 24/CS, Wheaton 227497-10</image:title>
      <image:caption>300 mL BOD Bottle, 217-240, with Glass Robotic Stopper, 24/CS, Wheaton 227497-10</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/300-ml-bod-bottle-241-264-with-glass-robotic-stopper-24-cs-wheaton-227497-11</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-22749711_ecf81539-c24a-4a33-b471-3417f0976a33.png?v=1784722276</image:loc>
      <image:title>300 mL BOD Bottle, 241-264, with Glass Robotic Stopper, 24/CS, Wheaton 227497-11</image:title>
      <image:caption>300 mL BOD Bottle, 241-264, with Glass Robotic Stopper, 24/CS, Wheaton 227497-11</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/300-ml-bod-bottle-265-288-with-glass-robotic-stopper-24-cs-wheaton-227497-12</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-22749712.png?v=1784722277</image:loc>
      <image:title>300 mL BOD Bottle, 265-288, with Glass Robotic Stopper, 24/CS, Wheaton 227497-12</image:title>
      <image:caption>300 mL BOD Bottle, 265-288, with Glass Robotic Stopper, 24/CS, Wheaton 227497-12</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/22-400-cap-urea-white-polyethylene-cone-liner-1000-cs-wheaton-240917</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-240917.png?v=1784722278</image:loc>
      <image:title>22-400 Cap, Urea White, Polyethylene Cone Liner, 1000/CS, Wheaton 240917</image:title>
      <image:caption>22-400 Cap, Urea White, Polyethylene Cone Liner, 1000/CS, Wheaton 240917</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/11-mm-snap-cap-clear-polyethylene-with-ptfe-rubber-liner-1000-cs-wheaton-242786</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-242786.png?v=1784722280</image:loc>
      <image:title>11 mm Snap Cap, Clear, Polyethylene with PTFE Rubber Liner, 1000/CS, Wheaton 242786</image:title>
      <image:caption>11 mm Snap Cap, Clear, Polyethylene with PTFE Rubber Liner, 1000/CS, Wheaton 242786</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/clamp-acetal-standard-taper-joint-19-blue-holds-standard-taper-joints-securely-under-moderate-pressure</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-297749_8af3994a-6ac7-4f8e-bca3-6670102f6b4c.png?v=1784722281</image:loc>
      <image:title>Clamp, Acetal, Standard Taper Joint #19, Blue, Holds Standard Taper Joints Securely Under Moderate Pressure</image:title>
      <image:caption>Clamp, Acetal, Standard Taper Joint #19, Blue, Holds Standard Taper Joints Securely Under Moderate Pressure</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/filtration-unit-complete-47-mm-with-no-8-stopper-connection-fritted-glass-support</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-419347.png?v=1784722282</image:loc>
      <image:title>Filtration Unit Complete, 47 mm, with No. 8 Stopper Connection &amp; Fritted Glass Support.</image:title>
      <image:caption>Filtration Unit Complete, 47 mm, with No. 8 Stopper Connection &amp; Fritted Glass Support.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/wheaton%C2%AE-47mm-filtration-assembly-replacement-part-silicone-stopper-no-8</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-419356_6a7399b1-562b-41ac-ab47-8e9f11a80419.png?v=1784722284</image:loc>
      <image:title>WHEATON® 47mm Filtration Assembly Replacement Part, Silicone Stopper, No 8</image:title>
      <image:caption>WHEATON® 47mm Filtration Assembly Replacement Part, Silicone Stopper, No 8</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/20-ml-scintillation-vial-no-cap</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-986532.png?v=1784722285</image:loc>
      <image:title>20 mL Scintillation Vial, No Cap</image:title>
      <image:caption>20 mL Scintillation Vial, No Cap</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/1-oz-wide-mouth-bottle-ac-round-type-iii-clear-with-polyvinyl-liner-33-400-thread-finish-wheaton-w216995</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-W216995.png?v=1784722287</image:loc>
      <image:title>1 oz. Wide-Mouth Bottle, AC Round, Type III, Clear, with Polyvinyl Liner, 33-400 Thread Finish, Wheaton W216995</image:title>
      <image:caption>1 oz. Wide-Mouth Bottle, AC Round, Type III, Clear, with Polyvinyl Liner, 33-400 Thread Finish, Wheaton W216995</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/2-oz-wide-mouth-bottle-ac-round-type-iii-clear-with-polyvinyl-liner-33-400-thread-finish-wheaton-w216996</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-W216996.png?v=1784722288</image:loc>
      <image:title>2 oz. Wide-Mouth Bottle, AC Round, Type III, Clear, with Polyvinyl Liner, 33-400 Thread Finish, Wheaton W216996</image:title>
      <image:caption>2 oz. Wide-Mouth Bottle, AC Round, Type III, Clear, with Polyvinyl Liner, 33-400 Thread Finish, Wheaton W216996</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/wheaton-e-z-crimper-for-11-mm-standard-aluminum-vial-seals-dwk-w225301</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WHG-W225301.png?v=1784722289</image:loc>
      <image:title>Wheaton E-Z Crimper for 11 mm Standard Aluminum Vial Seals, DWK, W225301</image:title>
      <image:caption>Wheaton E-Z Crimper for 11 mm Standard Aluminum Vial Seals, DWK, W225301</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/agate-pestle-100-mm</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WST-401H.png?v=1784722291</image:loc>
      <image:title>Agate Pestle, 100 mm</image:title>
      <image:caption>Agate Pestle, 100 mm</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/gloves-heat-resistant-medium-size-8-1-pair-showa-8814-08</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WWG-2EWX2_dd7ab79c-cdcc-4fb0-a520-f4ccd73be583.png?v=1784722292</image:loc>
      <image:title>Gloves, Heat Resistant, Medium (Size 8), 1 Pair, Showa 8814-08</image:title>
      <image:caption>Gloves, Heat Resistant, Medium (Size 8), 1 Pair, Showa 8814-08</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/gloves-heat-resistant-large-size-9-1-pair-showa-8814-09</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WWG-2EWX3.png?v=1784722293</image:loc>
      <image:title>Gloves, Heat Resistant, Large (Size 9), 1 Pair, Showa 8814-09</image:title>
      <image:caption>Gloves, Heat Resistant, Large (Size 9), 1 Pair, Showa 8814-09</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ballotini-blast-media-125-to-250-micron-0-0049-in-to-0-0098-in-60-120-mesh-53-lb-media-container-size-potters-ac-60-120</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WWG-2W765.png?v=1784722295</image:loc>
      <image:title>BALLOTINI Blast Media: 125 to 250 micron, 0.0049 in to 0.0098 in, 60-120 Mesh, 53 lb Media Container Size, Potters, AC (60-120)</image:title>
      <image:caption>BALLOTINI Blast Media: 125 to 250 micron, 0.0049 in to 0.0098 in, 60-120 Mesh, 53 lb Media Container Size, Potters, AC (60-120)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ballotini-blast-media-90-to-150-micron-0-0035-in-to-0-0059-in-100-170-53-lb-media-container-size</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WWG-2W766.png?v=1784722297</image:loc>
      <image:title>BALLOTINI Blast Media: 90 to 150 micron / 0.0035 in to 0.0059 in, 100-170, 53 lb Media Container Size</image:title>
      <image:caption>BALLOTINI Blast Media: 90 to 150 micron / 0.0035 in to 0.0059 in, 100-170, 53 lb Media Container Size</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ballotini-glass-blast-beads-53-lbs</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/WWG-6ZC14-01_73694eef-dba6-44b8-8d7f-03958ad208fe.png?v=1785287249</image:loc>
      <image:title>Ballotini Glass Blast Beads, 53 lbs</image:title>
      <image:caption>Ballotini Glass Blast Beads, 53 lbs</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/evaporating-dish-porcelain-vertical-walled-with-lip-and-spout-100-ml-66221-replaement-for-60221</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/X078-071_78920413-c991-4f1c-8d07-8dba8964c9e2.png?v=1785287250</image:loc>
      <image:title>Evaporating Dish,  Porcelain, Vertical-Walled, with Lip and Spout, 100 mL, 66221 (Replaement for 60221)</image:title>
      <image:caption>Evaporating Dish,  Porcelain, Vertical-Walled, with Lip and Spout, 100 mL, 66221 (Replaement for 60221)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/replacement-flask-with-standard-taper-stopper-19-38-standard-taper-joint-1000-ml-capacity-132-mm-o-d-x-210-mm-height-3360-1lfo</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/X082-123.png?v=1784722301</image:loc>
      <image:title>Replacement Flask with Standard Taper Stopper, 19/38 Standard Taper Joint , 1000 mL Capacity, 132 mm O.D. x 210 mm Height, 3360-1LFO</image:title>
      <image:caption>Replacement Flask with Standard Taper Stopper, 19/38 Standard Taper Joint , 1000 mL Capacity, 132 mm O.D. x 210 mm Height, 3360-1LFO</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/disposable-transfer-pipets-graduated-1-ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/X117-259.png?v=1784722302</image:loc>
      <image:title>Disposable Transfer Pipets, Graduated, 1 mL</image:title>
      <image:caption>Disposable Transfer Pipets, Graduated, 1 mL</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/transfer-pipet-polyethylene-non-sterile-graduated-standard-bulb-1-5-ml-samco-282</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/X182-477.png?v=1784722305</image:loc>
      <image:title>Transfer Pipet, Polyethylene, Non-Sterile, Graduated, Standard Bulb, 1.5 mL, Samco 282</image:title>
      <image:caption>Transfer Pipet, Polyethylene, Non-Sterile, Graduated, Standard Bulb, 1.5 mL, Samco 282</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/test-tube-rack-half-size-10-13-mm-tubes-36-place-bel-art-products-f18788-1301</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/X247-353_54ae15df-0910-493f-9d7d-2ed88d2d80e8.png?v=1784722308</image:loc>
      <image:title>Test Tube Rack, Half-Size, 10-13 mm Tubes, 36 Place, Bel Art Products, F18788-1301</image:title>
      <image:caption>Test Tube Rack, Half-Size, 10-13 mm Tubes, 36 Place, Bel Art Products, F18788-1301</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/glass-replacement-funnel-for-membrane-filter-funnel-assembly-47-mm-300-ml</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/X258-736.png?v=1784722310</image:loc>
      <image:title>Glass Replacement Funnel for Membrane Filter Funnel Assembly, 47 mm, 300 mL</image:title>
      <image:caption>Glass Replacement Funnel for Membrane Filter Funnel Assembly, 47 mm, 300 mL</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cleanware-aqua-clear-water-conditioner-100-ml-bel-art-products-f17093-0000</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/X278-339.png?v=1784722311</image:loc>
      <image:title>Cleanware Aqua Clear Water Conditioner, 100 mL, Bel Art Products, F17093-0000</image:title>
      <image:caption>Cleanware Aqua Clear Water Conditioner, 100 mL, Bel Art Products, F17093-0000</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/tongs-stainless-steel-with-teflon-coated-tips-9-in-bel-art-products-h37945-0000</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/X282-806.png?v=1784722313</image:loc>
      <image:title>Tongs, Stainless Steel with Teflon-Coated Tips, 9 in., Bel Art Products, H37945-0000</image:title>
      <image:caption>Tongs, Stainless Steel with Teflon-Coated Tips, 9 in., Bel Art Products, H37945-0000</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/poxygrid-centrifuge-tube-support-for-250-ml-tubes-bel-art-products-f19856-0250</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/X285-515.png?v=1784722314</image:loc>
      <image:title>Poxygrid Centrifuge Tube Support for 250 mL Tubes, Bel Art Products, F19856-0250</image:title>
      <image:caption>Poxygrid Centrifuge Tube Support for 250 mL Tubes, Bel Art Products, F19856-0250</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/biohazard-autoclave-bag-without-sterilization-indicator-12-in-x-24-in</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/X388-512.png?v=1784722317</image:loc>
      <image:title>Biohazard Autoclave Bag, without  Sterilization Indicator, 12 in. x 24 in., Fisherbrand, 22-044-558</image:title>
      <image:caption>Biohazard Autoclave Bag, without  Sterilization Indicator, 12 in. x 24 in., Fisherbrand, 22-044-558</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/stirrer-rod-and-paddle-for-models-5905-and-5910-self-stirring-bod-probes-ysi-059895-probe-shown</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-059895.png?v=1784722319</image:loc>
      <image:title>Stirrer Rod and Paddle, for Models 5905 and 5910 Self-Stirring BOD Probes, YSI, 059895 (PROBE SHOWN)</image:title>
      <image:caption>Stirrer Rod and Paddle, for Models 5905 and 5910 Self-Stirring BOD Probes, YSI, 059895 (PROBE SHOWN)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/tripod-for-mounting-pro-series-meters</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-063507.png?v=1784722320</image:loc>
      <image:title>Tripod, for Mounting Pro Series Meters</image:title>
      <image:caption>Tripod, for Mounting Pro Series Meters</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ph-orp-kit-yellow-spring-instrument-co-005565</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-5565.png?v=1784722322</image:loc>
      <image:title>pH/ORP Kit, Yellow Spring Instrument Co, 005565</image:title>
      <image:caption>pH/ORP Kit, Yellow Spring Instrument Co, 005565</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ph-ise-probe-for-pro-plus-multiparameter-meter</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-605101.png?v=1784722323</image:loc>
      <image:title>pH (ISE) Probe for Pro Plus Multiparameter Meter</image:title>
      <image:caption>pH (ISE) Probe for Pro Plus Multiparameter Meter</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/1002-pro-series-orp-redox-sensor-for-proplus-multiparameter-meter</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-605102.png?v=1784722325</image:loc>
      <image:title>1002 Pro Series ORP (Redox) Sensor for ProPlus Multiparameter Meter</image:title>
      <image:caption>1002 Pro Series ORP (Redox) Sensor for ProPlus Multiparameter Meter</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cable-for-use-with-pro-plus-multiparameter-meter-requires-a-do-probe-and-ise-sensor</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-6051020-4.png?v=1784722327</image:loc>
      <image:title>Cable for use with Pro Plus Multiparameter Meter, Requires a DO Probe and ISE Sensor</image:title>
      <image:caption>Cable for use with Pro Plus Multiparameter Meter, Requires a DO Probe and ISE Sensor</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/1003-pro-series-ph-orp-redox-combination-sensor-for-proplus-multiparameter-meter</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-605103.png?v=1784722328</image:loc>
      <image:title>1003 Pro Series pH/ORP (Redox) Combination Sensor for ProPlus Multiparameter Meter</image:title>
      <image:caption>1003 Pro Series pH/ORP (Redox) Combination Sensor for ProPlus Multiparameter Meter</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cable-for-use-with-proplus-multiparameter-meter-for-ise-conductivity-and-temperature-4-meter</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-6051030-4.png?v=1784722330</image:loc>
      <image:title>Cable for use with ProPlus Multiparameter Meter, for ISE, Conductivity and Temperature, 4 meter</image:title>
      <image:caption>Cable for use with ProPlus Multiparameter Meter, for ISE, Conductivity and Temperature, 4 meter</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/1004-pro-series-ammonium-nh4-sensor-for-proplus-multiparameter-meter</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-605104_cce9e75e-a6aa-4b86-9670-a0f08ce34c55.png?v=1784722331</image:loc>
      <image:title>1004 Pro Series Ammonium, NH4+ Sensor for ProPlus Multiparameter Meter</image:title>
      <image:caption>1004 Pro Series Ammonium, NH4+ Sensor for ProPlus Multiparameter Meter</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/1005-pro-series-chloride-sensor-for-proplus-multiparameter-meter</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-605105.png?v=1784722333</image:loc>
      <image:title>1005 Pro Series Chloride Sensor for ProPlus Multiparameter Meter</image:title>
      <image:caption>1005 Pro Series Chloride Sensor for ProPlus Multiparameter Meter</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/electrode-stand</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-605170.png?v=1784722334</image:loc>
      <image:title>Electrode Stand</image:title>
      <image:caption>Electrode Stand</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/single-junction-ph-sensor-4-m-cable-for-proplus-multiparameter-meter-system</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-605177_6cc8a637-50ec-43c0-b839-25201119a2d0.png?v=1784722336</image:loc>
      <image:title>Single Junction pH Sensor &amp; 4 m Cable for ProPlus Multiparameter Meter System</image:title>
      <image:caption>Single Junction pH Sensor &amp; 4 m Cable for ProPlus Multiparameter Meter System</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/single-junction-orp-sensor-4-m-cable-for-proplus-multiparameter-meter-system</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-605178.png?v=1784722337</image:loc>
      <image:title>Single Junction ORP Sensor &amp; 4 m Cable for ProPlus Multiparameter Meter System</image:title>
      <image:caption>Single Junction ORP Sensor &amp; 4 m Cable for ProPlus Multiparameter Meter System</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/single-junction-ph-orp-sensor-4-m-cable-for-proplus-multiparameter-meter-system</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-605179.png?v=1784722339</image:loc>
      <image:title>Single Junction pH/ORP Sensor &amp; 4 m Cable for ProPlus Multiparameter Meter System</image:title>
      <image:caption>Single Junction pH/ORP Sensor &amp; 4 m Cable for ProPlus Multiparameter Meter System</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/galvanic-do-probe-for-pro20-do-meter-and-pro-plus-multiparameter-meter</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-605202.png?v=1784722340</image:loc>
      <image:title>Galvanic DO Probe for Pro20 DO Meter and Pro Plus Multiparameter Meter</image:title>
      <image:caption>Galvanic DO Probe for Pro20 DO Meter and Pro Plus Multiparameter Meter</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cable-for-use-with-proplus-multiparameter-meter-for-do-conductivity-and-temperature-4-meter</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-6052030-4.png?v=1784722342</image:loc>
      <image:title>Cable for use with ProPlus Multiparameter Meter, for DO, Conductivity and Temperature, 4 meter</image:title>
      <image:caption>Cable for use with ProPlus Multiparameter Meter, for DO, Conductivity and Temperature, 4 meter</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/conductivity-temperature-field-cable-assembly-4-m-pro-series-built-in-conductivity-sensor</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-60530-4_e9161051-9742-408e-b08f-f76cf4bd8983.png?v=1784722344</image:loc>
      <image:title>Conductivity/Temperature Field Cable Assembly, 4 m, Pro-Series (Built-In Conductivity Sensor)</image:title>
      <image:caption>Conductivity/Temperature Field Cable Assembly, 4 m, Pro-Series (Built-In Conductivity Sensor)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/probod-self-stirring-bod-probe-for-pro-series-meters</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-605780.png?v=1784722345</image:loc>
      <image:title>ProBOD Self-Stirring BOD Probe for Pro Series Meters</image:title>
      <image:caption>ProBOD Self-Stirring BOD Probe for Pro Series Meters</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/cable-for-use-withpro-plus-multiparameter-meter-for-ise-ise-do-conductivity-temperature-4-meter</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-605790-4.png?v=1784722346</image:loc>
      <image:title>Cable for use withPro Plus Multiparameter Meter, for ISE/ISE/DO/Conductivity/Temperature, 4 meter</image:title>
      <image:caption>Cable for use withPro Plus Multiparameter Meter, for ISE/ISE/DO/Conductivity/Temperature, 4 meter</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/do-sensor-cap-kit-for-ysi-proodo-optical-probes-ysi-626320</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/YSI-626320_e7c03262-f82b-47fa-929e-a51cee2b029c.png?v=1784722348</image:loc>
      <image:title>DO Sensor Cap Kit for YSI ProODO Optical Probes, YSI, 626320</image:title>
      <image:caption>DO Sensor Cap Kit for YSI ProODO Optical Probes, YSI, 626320</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/rocker-switch-illuminated-spst-panel-mount-10-a</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z100.png?v=1784722349</image:loc>
      <image:title>Rocker Switch, Illuminated, SPST, Panel Mount, 10 A</image:title>
      <image:caption>Rocker Switch, Illuminated, SPST, Panel Mount, 10 A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/head-plug-95aj5670</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z102_a78a7c9b-fa9a-4b0e-923e-cec72b575287.png?v=1784722350</image:loc>
      <image:title>Head Plug, 95AJ5670</image:title>
      <image:caption>Head Plug, 95AJ5670</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/circular-head-plug-shell-97-series-solid-shell-straight-plug-size-24-inserts-96f5237</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z102-1.png?v=1784722352</image:loc>
      <image:title>Circular Head Plug Shell, 97 Series, Solid Shell Straight Plug, Size 24 Inserts, 96F5237</image:title>
      <image:caption>Circular Head Plug Shell, 97 Series, Solid Shell Straight Plug, Size 24 Inserts, 96F5237</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/head-clamp-size-24-28-23-8-mm-cable-size-for-use-with-97-series-circular-connectors-amphenol-industrial-97-3057-16</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z104.png?v=1784722354</image:loc>
      <image:title>Head Clamp, Size 24/28, 23.8 mm Cable Size, for Use with 97 Series Circular Connectors, Amphenol Industrial, 97-3057-16</image:title>
      <image:caption>Head Clamp, Size 24/28, 23.8 mm Cable Size, for Use with 97 Series Circular Connectors, Amphenol Industrial, 97-3057-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/printer-ribbon-for-p31-plastometer-d34-dilatometer</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z129.png?v=1784722356</image:loc>
      <image:title>Printer Ribbon for P31 Plastometer &amp; D34 Dilatometer</image:title>
      <image:caption>Printer Ribbon for P31 Plastometer &amp; D34 Dilatometer</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/printer-paper-for-p31-plastometer-d34-dilatometer</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z130.png?v=1784722357</image:loc>
      <image:title>Printer Paper for P31 Plastometer &amp; D34 Dilatometer</image:title>
      <image:caption>Printer Paper for P31 Plastometer &amp; D34 Dilatometer</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sample-carrier-for-video-ash-fusion-system-caf-f-03</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z1305.png?v=1784722359</image:loc>
      <image:title>Carbolite-Gero Sample Carrier for Video Ash Fusion System, CAF-F-03, Verder Scientific, 00254-3-2026</image:title>
      <image:caption>Carbolite-Gero Sample Carrier for Video Ash Fusion System, CAF-F-03, Verder Scientific, 00254-3-2026</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sample-tiles-for-video-ash-fusion-system</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z1306.png?v=1784722360</image:loc>
      <image:title>Sample Tiles for Video Ash Fusion System</image:title>
      <image:caption>Sample Tiles for Video Ash Fusion System</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/carbolite-gero-sample-mounting-tiles-for-caf-16-38-100-pk-verder-scientific</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z1306-1.png?v=1784722362</image:loc>
      <image:title>Carbolite-Gero Sample Mounting Tiles for CAF 16/38, 100/PK, Verder Scientific</image:title>
      <image:caption>Carbolite-Gero Sample Mounting Tiles for CAF 16/38, 100/PK, Verder Scientific</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sample-tiles-for-carbolite-caf-g5-100-pk-verder-scientific-caf-tile-kit</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z1306-3.png?v=1784722363</image:loc>
      <image:title>Carbolite-Gero Sample Tiles for Carbolite CAF G5, 100/PK, Verder Scientific, CAF-TILE-KIT</image:title>
      <image:caption>Carbolite-Gero Sample Tiles for Carbolite CAF G5, 100/PK, Verder Scientific, CAF-TILE-KIT</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ceramic-sample-tiles-1-x-1-x-1-4-in-saint-gobain-78-0909-15</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z1306-4.png?v=1784722364</image:loc>
      <image:title>Ceramic Sample Tiles, 1 x 1 x 1/4 in., Saint Gobain, 78-0909-15</image:title>
      <image:caption>Ceramic Sample Tiles, 1 x 1 x 1/4 in., Saint Gobain, 78-0909-15</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/solid-state-relay-spst-no-50-a-280-vrms-panel-screw-terminals-zero-crossing-mode</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z1326.png?v=1784722368</image:loc>
      <image:title>Solid State Relay, SPST-NO, 50 A, 280 Vrms, Panel, Screw Terminals, Zero Crossing Mode</image:title>
      <image:caption>Solid State Relay, SPST-NO, 50 A, 280 Vrms, Panel, Screw Terminals, Zero Crossing Mode</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/single-thermocouple-for-volatile-matter-furnace-ashing-furnace-spb20k-8-3-4</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z1328.png?v=1784722370</image:loc>
      <image:title>Single Thermocouple for Volatile Matter Furnace/Ashing Furnace, SPB20K-8 3/4</image:title>
      <image:caption>Single Thermocouple for Volatile Matter Furnace/Ashing Furnace, SPB20K-8 3/4</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/crucible-stand-4-place-for-carbolite-vmf-10-6-volatile-matter-furnace</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z1331-1.png?v=1784722371</image:loc>
      <image:title>Carbolite-Gero Crucible Stand, 4-Place, for Carbolite VMF 10/6 Volatile Matter Furnace, Verder Scientific, 00037-3-2003</image:title>
      <image:caption>Carbolite-Gero Crucible Stand, 4-Place, for Carbolite VMF 10/6 Volatile Matter Furnace, Verder Scientific, 00037-3-2003</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/terminal-block-porcelain-two-way-for-caroblite-volatile-matter-furnaces</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z1342.png?v=1784722373</image:loc>
      <image:title>Carbolite-Gero Terminal Block, Porcelain, Two-Way, for Caroblite Volatile Matter Furnaces, Verder Scientific, 20-320-400-0010</image:title>
      <image:caption>Carbolite-Gero Terminal Block, Porcelain, Two-Way, for Caroblite Volatile Matter Furnaces, Verder Scientific, 20-320-400-0010</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/rescor-901-ceramic-adhesive-alumina-based-maximum-temperature-1650-degrees-c</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z1349.png?v=1784722374</image:loc>
      <image:title>Rescor 901 Ceramic Adhesive, Alumina Based, Maximum Temperature 1650 degrees C</image:title>
      <image:caption>Rescor 901 Ceramic Adhesive, Alumina Based, Maximum Temperature 1650 degrees C</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/rear-plug-for-carbolite-digital-caf-coal-ash-fusion-furnace</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2000.png?v=1784722376</image:loc>
      <image:title>Carbolite-Gero Rear Plug for Carbolite Digital CAF (Coal Ash Fusion Furnace), Verder Scientific, 00254-3-1010-SP</image:title>
      <image:caption>Carbolite-Gero Rear Plug for Carbolite Digital CAF (Coal Ash Fusion Furnace), Verder Scientific, 00254-3-1010-SP</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/front-door-plug-for-carbolite-digital-caf-coal-coke-ash-fusion-furnace</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2001_bf57f9ee-04fd-4c03-84d6-aa1f33491775.png?v=1784722377</image:loc>
      <image:title>Carbolite-Gero Front Door Plug for Carbolite Digital CAF (Coal/Coke Ash Fusion Furnace), Verder Scientific, 40-996-424-0010</image:title>
      <image:caption>Carbolite-Gero Front Door Plug for Carbolite Digital CAF (Coal/Coke Ash Fusion Furnace), Verder Scientific, 40-996-424-0010</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/heating-element-for-video-ash-fusion-system</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2002.png?v=1784722379</image:loc>
      <image:title>Heating Element for Video Ash Fusion System, GB105333</image:title>
      <image:caption>Heating Element for Video Ash Fusion System, GB105333</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/combustion-tube-for-video-ash-fusion-system</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2003_54c7f6b3-cd0d-413d-909f-819670ad6246.png?v=1784722380</image:loc>
      <image:title>Combustion Tube for Video Ash Fusion System</image:title>
      <image:caption>Combustion Tube for Video Ash Fusion System</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/dual-thermocouple-for-video-ash-fusion-system</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2006_ae8bbe4b-a62c-4587-922a-2d9112635c06.png?v=1784722382</image:loc>
      <image:title>Carbolite-Gero Dual Thermocouple for Video Ash Fusion System, Verder Scientific, TCDR350AP048</image:title>
      <image:caption>Carbolite-Gero Dual Thermocouple for Video Ash Fusion System, Verder Scientific, TCDR350AP048</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/work-tube-o-ring-for-video-ash-fusion-system</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2007_fd79bd49-a150-4a6e-9432-3e3740d0b0db.png?v=1784722383</image:loc>
      <image:title>Carbolite-Gero Work Tube O-Ring for Video Ash Fusion System, Verder Scientific, 80-200-212-0010</image:title>
      <image:caption>Carbolite-Gero Work Tube O-Ring for Video Ash Fusion System, Verder Scientific, 80-200-212-0010</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/viewing-window-for-video-ash-fusion-system-quartz-1417</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2008.png?v=1784722385</image:loc>
      <image:title>Viewing Window for Video Ash Fusion System, Quartz, 1417</image:title>
      <image:caption>Viewing Window for Video Ash Fusion System, Quartz, 1417</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/window-gasket-for-carbolite-digital-ash-fusion-system</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2009_335326f8-999b-48f1-a4bd-2270fc9bb56d.png?v=1784722387</image:loc>
      <image:title>Window Gasket for Carbolite Digital Ash Fusion System</image:title>
      <image:caption>Window Gasket for Carbolite Digital Ash Fusion System</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/door-o-ring-for-video-ash-fusion-system</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2010.png?v=1784722388</image:loc>
      <image:title>Carbolite-Gero Door O-Ring for Video Ash Fusion System, Verder Scientific, 80-200-212-0020</image:title>
      <image:caption>Carbolite-Gero Door O-Ring for Video Ash Fusion System, Verder Scientific, 80-200-212-0020</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/door-plug-gasket-for-ash-fusion-furnace</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2012.png?v=1784722390</image:loc>
      <image:title>Door Plug Gasket for Ash Fusion Furnace</image:title>
      <image:caption>Door Plug Gasket for Ash Fusion Furnace</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/door-plug-sealing-ring-with-window-retaining-ring-for-carbolite-caf</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2013.png?v=1784722391</image:loc>
      <image:title>Carbolite-Gero Door Plug Sealing Ring with Window Retaining Ring for Carbolite CAF, Verder Scientific, 30-996-100-0040 &amp; 30-996-100-0050</image:title>
      <image:caption>Carbolite-Gero Door Plug Sealing Ring with Window Retaining Ring for Carbolite CAF, Verder Scientific, 30-996-100-0040 &amp; 30-996-100-0050</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/axial-fan-ip20-230-vac-2-97-cu-m-min-for-digital-caf</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2016.png?v=1784722392</image:loc>
      <image:title>Axial Fan, IP20, 230 VAC, 2.97 cu. m/min, for Digital CAF</image:title>
      <image:caption>Axial Fan, IP20, 230 VAC, 2.97 cu. m/min, for Digital CAF</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/type-j-thermocouple-for-plastometer-models-p31-4000-6100-6300</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z202.png?v=1784722394</image:loc>
      <image:title>Type J Thermocouple for Plastometer Models P31, 4000, 6100 &amp; 6300</image:title>
      <image:caption>Type J Thermocouple for Plastometer Models P31, 4000, 6100 &amp; 6300</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/p31-4000-plastometer-thermocouple-with-10-ft-lead-preiser-scientific</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z202-L.png?v=1784722396</image:loc>
      <image:title>P31/4000 Plastometer Thermocouple with 10 ft Lead, Preiser Scientific</image:title>
      <image:caption>P31/4000 Plastometer Thermocouple with 10 ft Lead, Preiser Scientific</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ferrule-for-carbolite-digital-caf</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2022_6563cbc4-cc59-4349-9c2a-0a8bb3a313f1.png?v=1785287252</image:loc>
      <image:title>Carbolite-Gero Ferrule for Carbolite-Gero Digital CAF, Verder Scientific, 80-132-108-0080, Verder Scientific, 80-132-108-0080</image:title>
      <image:caption>Carbolite-Gero Ferrule for Carbolite-Gero Digital CAF, Verder Scientific, 80-132-108-0080, Verder Scientific, 80-132-108-0080</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/spanner-wrench-for-digital-caf-ash-fusion-system</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2023.png?v=1784722400</image:loc>
      <image:title>Carbolite-Gero Spanner Wrench for Digital CAF Ash Fusion System, Verder Scientific, 00254-3-2073-SP</image:title>
      <image:caption>Carbolite-Gero Spanner Wrench for Digital CAF Ash Fusion System, Verder Scientific, 00254-3-2073-SP</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/power-relay-spdt-24-vdc-10-a-panel-mount-non-latching-for-digital-caf</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2027.png?v=1784722402</image:loc>
      <image:title>Power Relay, SPDT, 24 VDC, 10 A, Panel Mount, Non-Latching for Digital CAF</image:title>
      <image:caption>Power Relay, SPDT, 24 VDC, 10 A, Panel Mount, Non-Latching for Digital CAF</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/solder-50-50-for-plastometer-solder-pot-furnace-sold-by-each-each-approximate-1-5-lb-bar</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z203_2cf54d6f-9b1c-45dd-bea3-2ebe8427629f.png?v=1784722404</image:loc>
      <image:title>Solder, 50/50, for Plastometer Solder Pot Furnace (Sold by Each / Each = Approximate 1.5 lb Bar)</image:title>
      <image:caption>Solder, 50/50, for Plastometer Solder Pot Furnace (Sold by Each / Each = Approximate 1.5 lb Bar)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/co2-flowmeter-for-carbolite-digital-caf</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2035.png?v=1784722405</image:loc>
      <image:title>Carbolite-Gero CO2 Flowmeter for Carbolite Digital CAF, Verder Scientific, 80-080-000-0470</image:title>
      <image:caption>Carbolite-Gero CO2 Flowmeter for Carbolite Digital CAF, Verder Scientific, 80-080-000-0470</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/air-flowmeter-for-carbolite-digital-caf</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2036_1773cfd9-7cb9-44d3-be4e-9cb5d3d54ddf.png?v=1784722407</image:loc>
      <image:title>Carbolite-Gero Air Flowmeter for Carbolite Digital CAF, Verder Scientific, 80-080-000-0322</image:title>
      <image:caption>Carbolite-Gero Air Flowmeter for Carbolite Digital CAF, Verder Scientific, 80-080-000-0322</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/element-braids-for-carbolite-digital-ash-fusion-caf-8-pk</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2043.png?v=1784722409</image:loc>
      <image:title>Carbolite-Gero Element Braids for Carbolite-Gero Digital Ash Fusion (CAF), 8/PK, Verder Scientific, 00125-2088-08SP</image:title>
      <image:caption>Carbolite-Gero Element Braids for Carbolite-Gero Digital Ash Fusion (CAF), 8/PK, Verder Scientific, 00125-2088-08SP</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/work-tube-ring-for-carbolite-digital-caf</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2045.png?v=1784722410</image:loc>
      <image:title>Carbolite-Gero Work Tube Ring for Carbolite Digital CAF, Verder Scientific, 30-996-100-0020</image:title>
      <image:caption>Carbolite-Gero Work Tube Ring for Carbolite Digital CAF, Verder Scientific, 30-996-100-0020</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/work-tube-sealing-ring-for-carbolite-digital-caf</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2047_b59089ee-3ce0-42bd-812e-81ace26ae708.png?v=1785287253</image:loc>
      <image:title>Carbolite-Gero Work Tube Sealing Ring for Carbolite Digital CAF, Verder Scientific, 30-996-100-0030</image:title>
      <image:caption>Carbolite-Gero Work Tube Sealing Ring for Carbolite Digital CAF, Verder Scientific, 30-996-100-0030</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/stirring-shaft-for-preiser-plastometer</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z205.png?v=1784722413</image:loc>
      <image:title>Stirring Shaft for Preiser Plastometer</image:title>
      <image:caption>Stirring Shaft for Preiser Plastometer</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/insulating-collar-for-carbolite-digital-caf</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2050.png?v=1784722415</image:loc>
      <image:title>Carbolite-Gero Insulating Collar for Carbolite Digital CAF, Verder Scientific, 00254-3-2002</image:title>
      <image:caption>Carbolite-Gero Insulating Collar for Carbolite Digital CAF, Verder Scientific, 00254-3-2002</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/socket-screws-for-carbolite-digital-caf</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2055.png?v=1784722416</image:loc>
      <image:title>Carbolite-Gero Socket Screws for Carbolite Digital CAF, Verder Scientific, 35-052-004-0602</image:title>
      <image:caption>Carbolite-Gero Socket Screws for Carbolite Digital CAF, Verder Scientific, 35-052-004-0602</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/barrel-collar-for-preiser-plastometer-part-of-sample-containment-assembly</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z207.png?v=1784722418</image:loc>
      <image:title>Barrel Collar for Preiser Plastometer, Part of Sample Containment Assembly</image:title>
      <image:caption>Barrel Collar for Preiser Plastometer, Part of Sample Containment Assembly</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/solenoid-valve-n-c-normally-closed-for-carbolite-digital-caf</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2070.png?v=1784722420</image:loc>
      <image:title>Carbolite-Gero Solenoid Valve, N/C (Normally Closed) for Carbolite Digital CAF, Verder Scientific, 80-056-000-0040</image:title>
      <image:caption>Carbolite-Gero Solenoid Valve, N/C (Normally Closed) for Carbolite Digital CAF, Verder Scientific, 80-056-000-0040</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/24-v-dc-coil-solenoid-valve-for-carbolite-digital-caf</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2071.png?v=1784722422</image:loc>
      <image:title>Carbolite-Gero 24 V DC Coil Solenoid Valve for Carbolite Digital CAF, Verder Scientific, 80-056-000-0060</image:title>
      <image:caption>Carbolite-Gero 24 V DC Coil Solenoid Valve for Carbolite Digital CAF, Verder Scientific, 80-056-000-0060</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/main-power-switch-for-carbolite-digital-caf</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2072.png?v=1784722423</image:loc>
      <image:title>Carbolite-Gero Main Power Switch for Carbolite Digital CAF, Verder Scientific, 22-050-200-0200</image:title>
      <image:caption>Carbolite-Gero Main Power Switch for Carbolite Digital CAF, Verder Scientific, 22-050-200-0200</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/p1-and-p2-pressure-switch-for-carbolite-digital-caf</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2073.png?v=1784722424</image:loc>
      <image:title>Carbolite-Gero P1 and P2 Pressure Switch for Carbolite Digital CAF, Verder Scientific, 80-280-000-0010</image:title>
      <image:caption>Carbolite-Gero P1 and P2 Pressure Switch for Carbolite Digital CAF, Verder Scientific, 80-280-000-0010</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/1-4-in-bsp-24-v-solenoid-valve-for-carbolite-digital-caf</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z2074.png?v=1784722425</image:loc>
      <image:title>Carbolite-Gero 1/4 in. BSP 24 V Solenoid Valve for Carbolite Digital CAF, Verder Scientific, 80-056-000-0030</image:title>
      <image:caption>Carbolite-Gero 1/4 in. BSP 24 V Solenoid Valve for Carbolite Digital CAF, Verder Scientific, 80-056-000-0030</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/exhaust-chimney-for-preiser-plastometer-part-of-sample-containment-assembly</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z210.png?v=1784722427</image:loc>
      <image:title>Exhaust Chimney for Preiser Plastometer, Part of Sample Containment Assembly</image:title>
      <image:caption>Exhaust Chimney for Preiser Plastometer, Part of Sample Containment Assembly</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/3-piece-crucible-for-preiser-plastometer-part-of-sample-containment-assembly</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z212_bb4cbf53-0a01-4c8d-9689-25912c945913.png?v=1784722428</image:loc>
      <image:title>3-Piece Crucible for Preiser Plastometer, Part of Sample Containment Assembly</image:title>
      <image:caption>3-Piece Crucible for Preiser Plastometer, Part of Sample Containment Assembly</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/encoder-for-plastometer-head-assembly-spec-658</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z215.png?v=1784778086</image:loc>
      <image:title>Encoder for Plastometer Head Assembly, Spec 658</image:title>
      <image:caption>Encoder for Plastometer Head Assembly, Spec 658</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/multi-conductor-cable-for-plastometer-shielded-10-conductor-24-awg-1-ft-ea-100-ft-30-48-m-pk-87k7446</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/z216.png?v=1784722432</image:loc>
      <image:title>Multi-Conductor Cable for Plastometer, Shielded, 10 Conductor, 24 AWG, 1 ft/EA, 100 ft (30.48 m)/PK, 87K7446</image:title>
      <image:caption>Multi-Conductor Cable for Plastometer, Shielded, 10 Conductor, 24 AWG, 1 ft/EA, 100 ft (30.48 m)/PK, 87K7446</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/liner-for-p31-plastometer-solder-pot-furnace</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z220-1.png?v=1784722433</image:loc>
      <image:title>Liner for P31 Plastometer Solder Pot Furnace</image:title>
      <image:caption>Liner for P31 Plastometer Solder Pot Furnace</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/thermocouple-mounting-plate</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z221.png?v=1784722437</image:loc>
      <image:title>Thermocouple Mounting Plate</image:title>
      <image:caption>Thermocouple Mounting Plate</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ceramic-t-c-protection-tube-for-plastometer-solder-pot-furnace</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z222_e9cfc2b2-9331-4f24-949b-aa86614e207b.png?v=1784722438</image:loc>
      <image:title>Ceramic T/C Protection Tube for Plastometer Solder Pot Furnace</image:title>
      <image:caption>Ceramic T/C Protection Tube for Plastometer Solder Pot Furnace</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/thermocouple-mounting-fitting-holds-protection-tube-on-plastometer-solder-pot</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z223.png?v=1784722440</image:loc>
      <image:title>Thermocouple Mounting Fitting, Holds Protection Tube on Plastometer Solder Pot</image:title>
      <image:caption>Thermocouple Mounting Fitting, Holds Protection Tube on Plastometer Solder Pot</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/crucible-extension-for-plastometer</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z229_be201b9b-1308-4036-937a-fa046f498e56.png?v=1784722441</image:loc>
      <image:title>Crucible Extension for Plastometer</image:title>
      <image:caption>Crucible Extension for Plastometer</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/retort-barrel-short-for-plastometer</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z230.png?v=1784722443</image:loc>
      <image:title>Retort Barrel, Short for Plastometer</image:title>
      <image:caption>Retort Barrel, Short for Plastometer</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/dc-motor-clutch-coupling</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z250.png?v=1784722445</image:loc>
      <image:title>DC Motor - Clutch Coupling</image:title>
      <image:caption>DC Motor - Clutch Coupling</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/type-j-thermocouple-for-dilatometer-models-d34-5000-6200-6300</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z301_4ffd0274-0e2d-4a4d-9f92-e60c55b29326.png?v=1784722446</image:loc>
      <image:title>Type J Thermocouple for Dilatometer Models D34, 5000, 6200 &amp; 6300</image:title>
      <image:caption>Type J Thermocouple for Dilatometer Models D34, 5000, 6200 &amp; 6300</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sample-tube-for-preiser-dilatometer</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z305.png?v=1784722451</image:loc>
      <image:title>Sample Tube for Preiser Dilatometer</image:title>
      <image:caption>Sample Tube for Preiser Dilatometer</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/audibert-arnu-piston-for-preiser-dilatometer</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z306.png?v=1784722453</image:loc>
      <image:title>Audibert-Arnu Piston for Preiser Dilatometer</image:title>
      <image:caption>Audibert-Arnu Piston for Preiser Dilatometer</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sample-ejector-piston-for-preiser-dilatometer-for-removal-of-sample-from-mold</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z308.png?v=1784722454</image:loc>
      <image:title>Sample Ejector Piston for Preiser Dilatometer, for Removal of Sample from Mold</image:title>
      <image:caption>Sample Ejector Piston for Preiser Dilatometer, for Removal of Sample from Mold</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/sample-mold-for-preiser-dilatometer-for-preparation-of-sample-cylinder</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z309.png?v=1784722456</image:loc>
      <image:title>Sample Mold for Preiser Dilatometer, for Preparation of Sample Cylinder</image:title>
      <image:caption>Sample Mold for Preiser Dilatometer, for Preparation of Sample Cylinder</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/tamping-pin-3-1-4-in-for-preiser-dilatometer-used-in-sample-preparation-process</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z310_63d41838-3a5d-48a6-b975-8ab7f301cb94.png?v=1784722457</image:loc>
      <image:title>Tamping Pin, 3-1/4 in., for Preiser Dilatometer, Used in Sample Preparation Process</image:title>
      <image:caption>Tamping Pin, 3-1/4 in., for Preiser Dilatometer, Used in Sample Preparation Process</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/tamping-pin-2-3-4-in-for-preiser-dilatometer-used-in-sample-preparation-process</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z311.png?v=1784722459</image:loc>
      <image:title>Tamping Pin, 2-3/4 in., for Preiser Dilatometer, Used in Sample Preparation Process</image:title>
      <image:caption>Tamping Pin, 2-3/4 in., for Preiser Dilatometer, Used in Sample Preparation Process</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/tamping-pin-1-3-4-in-for-preiser-dilatometer-used-in-sample-preparation-process</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z312.png?v=1784722461</image:loc>
      <image:title>Tamping Pin, 1-3/4 in., for Preiser Dilatometer, Used in Sample Preparation Process</image:title>
      <image:caption>Tamping Pin, 1-3/4 in., for Preiser Dilatometer, Used in Sample Preparation Process</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/mold-guide-for-preiser-dilatometer-used-in-sample-preparation-process</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z313.png?v=1784722462</image:loc>
      <image:title>Mold Guide for Preiser Dilatometer, Used in Sample Preparation Process</image:title>
      <image:caption>Mold Guide for Preiser Dilatometer, Used in Sample Preparation Process</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/preiser-dilatometer-packer-assembly</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z316D_ed43b39a-7e2e-441b-97f7-149fc2166556.png?v=1784722463</image:loc>
      <image:title>Preiser Dilatometer Packer Assembly</image:title>
      <image:caption>Preiser Dilatometer Packer Assembly</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/slide-hammer-for-dilatometer-packer</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z318-2_dc82e014-d361-4ff0-a08e-093893b3cf04.png?v=1784722465</image:loc>
      <image:title>Slide Hammer for Dilatometer Packer</image:title>
      <image:caption>Slide Hammer for Dilatometer Packer</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ejector-packer-for-preiser-dilatometers</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z319.png?v=1784722467</image:loc>
      <image:title>Ejector Packer for Preiser Dilatometers</image:title>
      <image:caption>Ejector Packer for Preiser Dilatometers</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/transfer-arm-for-dilatometer-connects-lvdt-to-sample-piston</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z327_35ef00f7-1a80-40c2-979c-71bcea9e9447.png?v=1784722468</image:loc>
      <image:title>Transfer Arm for Dilatometer, Connects LVDT to Sample Piston</image:title>
      <image:caption>Transfer Arm for Dilatometer, Connects LVDT to Sample Piston</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/signal-relay-12-vdc-dpdt-2-a-through-hole-dc-monostable-panasonic-ds2e-m-dc12v-r</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z466.png?v=1784722470</image:loc>
      <image:title>Signal Relay, 12 VDC, DPDT, 2 A, Through Hole, DC Monostable, Panasonic, DS2E-M-DC12V-R</image:title>
      <image:caption>Signal Relay, 12 VDC, DPDT, 2 A, Through Hole, DC Monostable, Panasonic, DS2E-M-DC12V-R</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/plug-with-hex-drive-black-coated-steel-low-pressure-pipe-fitting-1-8-npt-male-3-16-in-drive</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z473.png?v=1784722471</image:loc>
      <image:title>Plug with Hex Drive, Black-Coated Steel, Low-Pressure Pipe Fitting, 1/8 NPT, Male, 3/16 in. Drive</image:title>
      <image:caption>Plug with Hex Drive, Black-Coated Steel, Low-Pressure Pipe Fitting, 1/8 NPT, Male, 3/16 in. Drive</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ssr-quad-20-a-240-vac</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z603_db162d42-8e05-4c8d-b5f0-4ccf7d0f0653.png?v=1784722473</image:loc>
      <image:title>SSR, Quad, 20 A, 240 VAC</image:title>
      <image:caption>SSR, Quad, 20 A, 240 VAC</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/axial-fan-3115fs-series-230-vac-0-57-cu-m-min</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z619.png?v=1784722475</image:loc>
      <image:title>Axial Fan, 3115FS Series, 230 VAC, 0.57 cu. m/min</image:title>
      <image:caption>Axial Fan, 3115FS Series, 230 VAC, 0.57 cu. m/min</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/solder-pot-furnace-assembly-with-heating-element</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z651.png?v=1784722477</image:loc>
      <image:title>Solder Pot Furnace Assembly, with Heating Element</image:title>
      <image:caption>Solder Pot Furnace Assembly, with Heating Element</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/plastometer-solder-pot-furnace-heating-element</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z651-1_925bea4f-ad57-49f1-9a8f-9fbff75b4774.png?v=1784778088</image:loc>
      <image:title>Plastometer Solder Pot Furnace Heating Element</image:title>
      <image:caption>Plastometer Solder Pot Furnace Heating Element</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/high-temperature-leads-with-terminals-for-preiser-plastometer-solder-pot</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z651-3.png?v=1784722479</image:loc>
      <image:title>High Temperature Leads with Terminals for Preiser Plastometer Solder Pot</image:title>
      <image:caption>High Temperature Leads with Terminals for Preiser Plastometer Solder Pot</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/connecting-rod-1-4-in-28-internal-thread-6-in-overall-length-for-solder-pot</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z651-5.png?v=1784722481</image:loc>
      <image:title>Connecting Rod, 1/4 in. -28 Internal Thread, 6 in. Overall Length for Solder Pot</image:title>
      <image:caption>Connecting Rod, 1/4 in. -28 Internal Thread, 6 in. Overall Length for Solder Pot</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/magnetic-clutch-brake-for-preiser-plastometer-head-assembly</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z659_54a93295-a584-4499-917e-803b40f31331.png?v=1784722482</image:loc>
      <image:title>Magnetic Clutch/Brake for Preiser Plastometer Head Assembly</image:title>
      <image:caption>Magnetic Clutch/Brake for Preiser Plastometer Head Assembly</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/coupling-encoder-clutch</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/z663.png?v=1784722484</image:loc>
      <image:title>Coupling Encoder-Clutch</image:title>
      <image:caption>Coupling Encoder-Clutch</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bath-stirrer-block-assembly-for-plastometer-solder-pot-furnace</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/z665.png?v=1784722485</image:loc>
      <image:title>Bath Stirrer Block Assembly for Plastometer Solder Pot Furnace</image:title>
      <image:caption>Bath Stirrer Block Assembly for Plastometer Solder Pot Furnace</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/pivot-block</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z665-1_41e71533-72db-4943-9745-7fac564d1428.png?v=1784722487</image:loc>
      <image:title>Pivot Block</image:title>
      <image:caption>Pivot Block</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bearing-for-pivot-block-of-plastometer</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z665-2.png?v=1784722488</image:loc>
      <image:title>Bearing for Pivot Block of Plastometer</image:title>
      <image:caption>Bearing for Pivot Block of Plastometer</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/top-rulon-pivot-block-bearing-for-plastometer</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z665-4.png?v=1784722490</image:loc>
      <image:title>Top Rulon Pivot Block Bearing for Plastometer</image:title>
      <image:caption>Top Rulon Pivot Block Bearing for Plastometer</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bottom-rulon-bearing-for-plastometer</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z665-5.png?v=1784722491</image:loc>
      <image:title>Bottom Rulon Bearing for Plastometer</image:title>
      <image:caption>Bottom Rulon Bearing for Plastometer</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/head-assembly-for-model-4000-6000-plastometers-preiser-scientific-inc-representative-image</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z667.png?v=1784722493</image:loc>
      <image:title>Head Assembly for Model 4000/6000 Plastometers, Preiser Scientific, Inc (REPRESENTATIVE IMAGE)</image:title>
      <image:caption>Head Assembly for Model 4000/6000 Plastometers, Preiser Scientific, Inc (REPRESENTATIVE IMAGE)</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/bath-pot-stirrer-drive-belt-for-plastometers-viton-fluoroelastomer-3-32-in-fractional-width</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/z670_8c7fd45e-89a8-43d3-848c-36d0a6aa7f8d.png?v=1784722494</image:loc>
      <image:title>Bath Pot Stirrer Drive Belt for Plastometers, Viton Fluoroelastomer, 3/32 in. Fractional Width</image:title>
      <image:caption>Bath Pot Stirrer Drive Belt for Plastometers, Viton Fluoroelastomer, 3/32 in. Fractional Width</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/barrel-without-stirrer-guide-sleeve-frs-426014b-for-preiser-plastometer-part-of-sample-containment-assembly</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z672_43807bdb-227e-48fb-85d3-a1121ef0866e.png?v=1784722495</image:loc>
      <image:title>Barrel, without  Stirrer guide sleeve (FRS-426014B) for Preiser Plastometer, Part of Sample Containment Assembly</image:title>
      <image:caption>Barrel, without  Stirrer guide sleeve (FRS-426014B) for Preiser Plastometer, Part of Sample Containment Assembly</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/dilatometer-furnace-assembly-240-vac</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z676_d4d6ff1f-100e-414e-a3d2-4db404c8aff3.png?v=1784722497</image:loc>
      <image:title>Dilatometer Furnace Assembly, 240 Vac</image:title>
      <image:caption>Dilatometer Furnace Assembly, 240 Vac</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/linear-variable-differential-transducer-lvdt-for-measuring-movement-of-sample-in-dilatometer-furnace</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z677.png?v=1784722499</image:loc>
      <image:title>Linear Variable Differential Transducer (LVDT), for Measuring Movement of Sample in Dilatometer Furnace</image:title>
      <image:caption>Linear Variable Differential Transducer (LVDT), for Measuring Movement of Sample in Dilatometer Furnace</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/moving-piston-within-preiser-dilatometer-lvdt-assemblies</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z677-1.png?v=1784722501</image:loc>
      <image:title>Moving Piston within Preiser Dilatometer LVDT Assemblies</image:title>
      <image:caption>Moving Piston within Preiser Dilatometer LVDT Assemblies</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/heating-element-for-dilatometer-half-section-230-v-1290-w-2-3-8-id-x-18-in-length-2200-degrees-f-1204-degrees-c-sk-239-c</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z678.png?v=1784722502</image:loc>
      <image:title>Heating Element for Dilatometer, Half Section, 230 V, 1290 W, 2-3/8 ID x 18 in. Length, 2200 degrees F / 1204 degrees C, SK-239-C</image:title>
      <image:caption>Heating Element for Dilatometer, Half Section, 230 V, 1290 W, 2-3/8 ID x 18 in. Length, 2200 degrees F / 1204 degrees C, SK-239-C</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/anti-sieze-lubricant-4-oz-brush-in-top-can</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z702.png?v=1784722505</image:loc>
      <image:title>Anti Sieze Lubricant,  4 oz. Brush-in-Top Can</image:title>
      <image:caption>Anti Sieze Lubricant,  4 oz. Brush-in-Top Can</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/torque-gage-with-calibration-kit-for-plastometer</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z706.png?v=1784722507</image:loc>
      <image:title>Torque Gage with Calibration Kit for Plastometer</image:title>
      <image:caption>Torque Gage with Calibration Kit for Plastometer</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/torque-test-assembly-for-dilatometer-p31-preiser-scientific</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z706-1.png?v=1784778089</image:loc>
      <image:title>Torque Test Assembly for Dilatometer P31, Preiser Scientific</image:title>
      <image:caption>Torque Test Assembly for Dilatometer P31, Preiser Scientific</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/10-in-slip-joint-pliers-representative-image-only</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z715_3ff1a48e-20eb-43e6-8362-adeefaf05863.png?v=1784722510</image:loc>
      <image:title>10 in. Slip-Joint Pliers [REPRESENTATIVE IMAGE ONLY]</image:title>
      <image:caption>10 in. Slip-Joint Pliers [REPRESENTATIVE IMAGE ONLY]</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/mold-release-agent-for-use-in-preparation-of-sample-for-dilatometer-system</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z716.png?v=1784722512</image:loc>
      <image:title>Mold Release Agent for Use in Preparation of Sample for Dilatometer System</image:title>
      <image:caption>Mold Release Agent for Use in Preparation of Sample for Dilatometer System</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ptfe-mold-release-agent-1-qt-miller-stevenson-ms143te</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z716-1_55570fbb-7ffb-401e-b700-534bf4d68c8f.png?v=1784722513</image:loc>
      <image:title>PTFE Mold Release Agent, 1 qt., Miller-Stevenson, MS143TE</image:title>
      <image:caption>PTFE Mold Release Agent, 1 qt., Miller-Stevenson, MS143TE</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/thermocouple-type-r-2nd-856-for-preiser-model-900-and-model-950-sulfur-analyzers</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z880-000566_8f30f024-7386-45e1-9d5b-c5a2691750dc.png?v=1784722515</image:loc>
      <image:title>Thermocouple, Type R, 2nd 856, for Preiser Model 900 and Model 950 Sulfur Analyzers</image:title>
      <image:caption>Thermocouple, Type R, 2nd 856, for Preiser Model 900 and Model 950 Sulfur Analyzers</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/disposable-filter-for-preiser-model-900-and-model-950-sulfur-analyzers</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z880-100153.png?v=1785287254</image:loc>
      <image:title>Disposable Filter for Preiser Model 900 and Model 950 Sulfur Analyzers</image:title>
      <image:caption>Disposable Filter for Preiser Model 900 and Model 950 Sulfur Analyzers</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/anhydrone-tube-bubble-7-for-preiser-model-900-and-model-950-sulfur-analyzers</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z880-101230_94c6dbe6-9aa9-428c-8a3a-0959a2214e16.png?v=1784722518</image:loc>
      <image:title>Anhydrone Tube, Bubble 7 for Preiser Model 900 and Model 950 Sulfur Analyzers</image:title>
      <image:caption>Anhydrone Tube, Bubble 7 for Preiser Model 900 and Model 950 Sulfur Analyzers</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/heating-element-for-preiser-model-900-and-model-950-sulfur-analyzers-super-33-880-a-m</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/z880-101231.png?v=1784722519</image:loc>
      <image:title>Heating Element for Preiser Model 900 and Model 950 Sulfur Analyzers, Super 33, 880 A-M, 931168</image:title>
      <image:caption>Heating Element for Preiser Model 900 and Model 950 Sulfur Analyzers, Super 33, 880 A-M, 931168</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ceramic-tube-for-preiser-model-900-and-model-950-sulfur-analyzers-1-75-od-x-1-50-id-x-18-in-length-open-both-ends-representative-image</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z880-101236.png?v=1784722521</image:loc>
      <image:title>Ceramic Tube for Preiser Model 900 and Model 950 Sulfur Analyzers, 1.75 OD x 1.50 ID x 18 in. Length, Open Both Ends [Representative Image]</image:title>
      <image:caption>Ceramic Tube for Preiser Model 900 and Model 950 Sulfur Analyzers, 1.75 OD x 1.50 ID x 18 in. Length, Open Both Ends [Representative Image]</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/lance-tube-for-preiser-model-900-and-model-950-sulfur-analyzers-998-alumina-0-250-od-x-0-125-id-x-14-5-in-length-representative-image</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z880-101237.png?v=1784722523</image:loc>
      <image:title>Lance Tube for Preiser Model 900 and Model 950 Sulfur Analyzers, 998 Alumina, 0.250 OD x 0.125 ID x 14.5  in. Length [Representative Image]</image:title>
      <image:caption>Lance Tube for Preiser Model 900 and Model 950 Sulfur Analyzers, 998 Alumina, 0.250 OD x 0.125 ID x 14.5  in. Length [Representative Image]</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/wool-glass-for-sulfur-analyzer-model-900-950-corning-3950</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z880-101242.png?v=1785287256</image:loc>
      <image:title>Wool, Glass, for Sulfur Analyzer Model 900/950, Corning 3950.</image:title>
      <image:caption>Wool, Glass, for Sulfur Analyzer Model 900/950, Corning 3950.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/ceramic-crucible-for-preiser-sulfur-analyzers</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z880-101257_af838595-b759-4969-a44f-8761119dd8d8.png?v=1784778092</image:loc>
      <image:title>Ceramic Crucible, for Preiser Sulfur Analyzers</image:title>
      <image:caption>Ceramic Crucible, for Preiser Sulfur Analyzers</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/oring-for-anhydrone-tube-for-preiser-model-900-and-model-950-sulfur-analyzers</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z880-101259_68350225-25b6-4951-8e45-985b9ecf06e2.png?v=1784722527</image:loc>
      <image:title>O&apos;Ring for Anhydrone Tube for Preiser Model 900 and Model 950 Sulfur Analyzers</image:title>
      <image:caption>O&apos;Ring for Anhydrone Tube for Preiser Model 900 and Model 950 Sulfur Analyzers</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/gas-dryer-tube-for-preiser-model-900-and-model-950-sulfur-analyzers</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z880-101295.png?v=1784722529</image:loc>
      <image:title>Gas Dryer Tube for Preiser Model 900 and Model 950 Sulfur Analyzers</image:title>
      <image:caption>Gas Dryer Tube for Preiser Model 900 and Model 950 Sulfur Analyzers</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/printer-assembly-for-plastometer-dilatometer-120-vac</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z880-102003_74f992b3-3c19-4f59-bf8b-73a36c652e25.png?v=1784722530</image:loc>
      <image:title>Printer Assembly for Plastometer &amp; Dilatometer, 120 Vac</image:title>
      <image:caption>Printer Assembly for Plastometer &amp; Dilatometer, 120 Vac</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/element-holder-for-preiser-model-900-and-model-950-sulfur-analyzers</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z880-102015.png?v=1784722532</image:loc>
      <image:title>Element Holder for Preiser Model 900 and Model 950 Sulfur Analyzers</image:title>
      <image:caption>Element Holder for Preiser Model 900 and Model 950 Sulfur Analyzers</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/pre-filter-75-micron-for-preiser-model-900-and-model-950-sulfur-analyzers</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z880-102016.png?v=1784722533</image:loc>
      <image:title>Pre-Filter, 75 Micron, for Preiser Model 900 and Model 950 Sulfur Analyzers</image:title>
      <image:caption>Pre-Filter, 75 Micron, for Preiser Model 900 and Model 950 Sulfur Analyzers</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/filter-grade-6-for-preiser-model-900-and-model-950-sulfur-analyzers</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z880-102018.png?v=1784722535</image:loc>
      <image:title>Filter, Grade 6, for Preiser Model 900 and Model 950 Sulfur Analyzers</image:title>
      <image:caption>Filter, Grade 6, for Preiser Model 900 and Model 950 Sulfur Analyzers</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/contact-strap-double-loop-3-5-in-for-preiser-model-900-and-model-950-sulfur-analyzers</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/z880-102025.png?v=1784722536</image:loc>
      <image:title>Contact Strap, Double Loop, 3.5 in., for Preiser Model 900 and Model 950 Sulfur Analyzers</image:title>
      <image:caption>Contact Strap, Double Loop, 3.5 in., for Preiser Model 900 and Model 950 Sulfur Analyzers</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://preiser.com/products/contact-strap-single-loop-9-8-in-for-preiser-model-900-and-model-950-sulfur-analyzers</loc>
    <lastmod>2026-07-28T21:29:35-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0921/2041/6571/files/Z880-102026.png?v=1784722538</image:loc>
      <image:title>Contact Strap, Single Loop, 9.8 in., for Preiser Model 900 and Model 950 Sulfur Analyzers</image:title>
      <image:caption>Contact Strap, Single Loop, 9.8 in., for Preiser Model 900 and Model 950 Sulfur Analyzers</image:caption>
    </image:image>
  </url>
</urlset>
