{"title":"Grades 52\/54-Whatman","description":"\u003cp\u003eGrades 52\/54-Whatman\u003c\/p\u003e","products":[{"product_id":"ahlstrom-grade-54-quantitative-ashless-filter-paper-10-micron-retention-9-cm","title":"Quantitative Filter Paper, Grade 54, Ashless, 9.0 cm Diameter, 10 microns Pore, 100\/PK, Ahlstrom, 0540-0900","description":"\u003cp\u003e\u003cstrong\u003eAhlstrom® Quantitative Filter Paper, Grade 54, Ashless, 9.0 cm Diameter, 10 microns Pore, 100\/PK, 0540-0900\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e10 microns, Fast Speed filter paper for quantitative gravimetric techniques\u003c\/li\u003e\n\u003cli\u003eMedium loading capacity\u003c\/li\u003e\n\u003cli\u003eAcid-washed and ashless for gravimetric and instrumental analysis\u003c\/li\u003e\n\u003cli\u003eHigh purity and uniformity\u003c\/li\u003e\n\u003cli\u003eFast filtering grade for rapid filtration of coarse particles and gelatinous precipitates such as iron, zirconium and aluminum hydroxides, and cobalt sulfide\u003c\/li\u003e\n\u003cli\u003eGrade 54 is also used in air pollution testing to determine gaseous compounds\u003c\/li\u003e\n\u003cli\u003eRecommended for fast analysis procedures for unstable precipitates such as silicon, which requires speedy filtration\u003c\/li\u003e\n\u003cli\u003eFor coal, mining, cement, and metallurgical laboratories, Grade 54 is often selected when filtration speed is critical and the precipitate is relatively coarse-common alternative to slower grades such as 74 and 94\u003c\/li\u003e\n\u003cli\u003eConsidered equivalent to Cytiva® Whatman® Grade 41\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ahlstrom","offers":[{"title":"PK (1)","offer_id":51110618399035,"sku":"12-4595-03-PK","price":40.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/12-4595-03.png?v=1785302380"},{"product_id":"ahlstrom-grade-54-quantitative-ashless-filter-paper-10-micron-retention-11-cm","title":"Quantitative Filter Paper, Grade 54, Ashless, 11.0 cm Diameter, 10 microns Pore, 100\/PK, Ahlstrom, 0540-1100","description":"\u003cp\u003e\u003cstrong\u003eAhlstrom® Quantitative Filter Paper, Grade 54, Ashless, 11.0 cm Diameter, 10 microns Pore, 100\/PK, 0540-1100\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e10 microns, Fast Speed filter paper for quantitative gravimetric techniques\u003c\/li\u003e\n\u003cli\u003eMedium loading capacity\u003c\/li\u003e\n\u003cli\u003eAcid-washed and ashless for gravimetric and instrumental analysis\u003c\/li\u003e\n\u003cli\u003eHigh purity and uniformity\u003c\/li\u003e\n\u003cli\u003eFast filtering grade for rapid filtration of coarse particles and gelatinous precipitates such as iron, zirconium and aluminum hydroxides, and cobalt sulfide\u003c\/li\u003e\n\u003cli\u003eGrade 54 is also used in air pollution testing to determine gaseous compounds\u003c\/li\u003e\n\u003cli\u003eRecommended for fast analysis procedures for unstable precipitates such as silicon, which requires speedy filtration\u003c\/li\u003e\n\u003cli\u003eFor coal, mining, cement, and metallurgical laboratories, Grade 54 is often selected when filtration speed is critical and the precipitate is relatively coarse-common alternative to slower grades such as 74 and 94\u003c\/li\u003e\n\u003cli\u003eConsidered equivalent to Cytiva® Whatman® Grade 41\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ahlstrom","offers":[{"title":"BX (1)","offer_id":51110618464571,"sku":"12-4595-04-BX","price":59.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/12-4595-04.png?v=1785302382"},{"product_id":"ahlstrom-grade-54-quantitative-ashless-filter-paper-10-micron-retention-12-5-cm","title":"Quantitative Filter Paper, Grade 54, Ashless, 12.5 cm Diameter, 10 microns Pore, 100\/PK, Ahlstrom, 0540-1250","description":"\u003cp\u003e\u003cstrong\u003eAhlstrom® Quantitative Filter Paper, Grade 54, Ashless, 12.5 cm Diameter, 10 microns Pore, 100\/PK, 0540-1250\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e10 microns, Fast Speed filter paper for quantitative gravimetric techniques\u003c\/li\u003e\n\u003cli\u003eMedium loading capacity\u003c\/li\u003e\n\u003cli\u003eAcid-washed and ashless for gravimetric and instrumental analysis\u003c\/li\u003e\n\u003cli\u003eHigh purity and uniformity\u003c\/li\u003e\n\u003cli\u003eFast filtering grade for rapid filtration of coarse particles and gelatinous precipitates such as iron, zirconium and aluminum hydroxides, and cobalt sulfide\u003c\/li\u003e\n\u003cli\u003eGrade 54 is also used in air pollution testing to determine gaseous compounds\u003c\/li\u003e\n\u003cli\u003eRecommended for fast analysis procedures for unstable precipitates such as silicon, which requires speedy filtration\u003c\/li\u003e\n\u003cli\u003eFor coal, mining, cement, and metallurgical laboratories, Grade 54 is often selected when filtration speed is critical and the precipitate is relatively coarse-common alternative to slower grades such as 74 and 94\u003c\/li\u003e\n\u003cli\u003eConsidered equivalent to Cytiva® Whatman® Grade 41\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ahlstrom","offers":[{"title":"PK (1)","offer_id":51110618497339,"sku":"12-4595-05-PK","price":54.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/12-4595-05.png?v=1785302383"},{"product_id":"grade-54-ashless-quantitative-filter-paper-fast-15-cm-diameter-100-pk-ahlstrom-0540-1500","title":"Quantitative Filter Paper, Grade 54, Ashless, 15.0 cm Diameter, 10 microns Pore, 100\/PK, Ahlstrom, 0540-1500","description":"\u003cp\u003e\u003cstrong\u003eAhlstrom® Quantitative Filter Paper, Grade 54, Ashless, 15.0 cm Diameter, 10 microns Pore, 100\/PK, 0540-1500\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e10 microns, Fast Speed filter paper for quantitative gravimetric techniques\u003c\/li\u003e\n\u003cli\u003eMedium loading capacity\u003c\/li\u003e\n\u003cli\u003eAcid-washed and ashless for gravimetric and instrumental analysis\u003c\/li\u003e\n\u003cli\u003eHigh purity and uniformity\u003c\/li\u003e\n\u003cli\u003eFast filtering grade for rapid filtration of coarse particles and gelatinous precipitates such as iron, zirconium and aluminum hydroxides, and cobalt sulfide\u003c\/li\u003e\n\u003cli\u003eGrade 54 is also used in air pollution testing to determine gaseous compounds\u003c\/li\u003e\n\u003cli\u003eRecommended for fast analysis procedures for unstable precipitates such as silicon, which requires speedy filtration\u003c\/li\u003e\n\u003cli\u003eFor coal, mining, cement, and metallurgical laboratories, Grade 54 is often selected when filtration speed is critical and the precipitate is relatively coarse-common alternative to slower grades such as 74 and 94\u003c\/li\u003e\n\u003cli\u003eConsidered equivalent to Cytiva® Whatman® Grade 41\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ahlstrom","offers":[{"title":"PK (1)","offer_id":51110946799931,"sku":"90-7483-07-PK","price":69.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7483-07.png?v=1784923560"},{"product_id":"whatman-quantitative-filter-paper-hardened-low-ash-grade-50-15-cm-cytiva-1450-150","title":"Whatman Quantitative Filter Paper, Hardened Low Ash, Grade 50, 15 cm, Cytiva, 1450-150","description":"\u003cp\u003e\u003cstrong\u003eCytiva® Whatman® Quantitative Filter Paper, Hardened Low Ash, Grade 50, 15 cm, 100 sheets\/PK, 1450-150\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhatman Grade 50 quantitative hardened low ash filter paper is highly glazed to enable recrystallization of very fine precipitates using Büchner funnel or Hirsch funnel filtration\u003c\/li\u003e\n\u003cli\u003eHard, very thin, high wet-strength Grade 50 quantitative filter paper withstands wet handling and precipitate removal by scraping\u003c\/li\u003e\n\u003cli\u003eWith very minimal fiber shedding, they are especially good choice for use as carriers in integrated circuits\u003c\/li\u003e\n\u003cli\u003eSlow filtration for strong retention of very fine particles\u003c\/li\u003e\n\u003cli\u003eThinner filter design (average thickness 115 µm) than most Büchner filter papers\u003c\/li\u003e\n\u003cli\u003eNominal particle retention of 2.7 µm\u003c\/li\u003e\n\u003cli\u003eSlow flow rates (Herzberg filtration speed 2685 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity and low ash content (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eAcid-treated for high wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eHardened to minimize fiber shredding\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110955843899,"sku":"90-7509-07-PK","price":121.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7509-07.png?v=1784705442"},{"product_id":"whatman-grade-52-quantitative-low-ash-filter-paper-medium-precipitates-retained-7-cm","title":"Whatman Grade 52 Quantitative Low Ash Filter Paper, Medium Precipitates Retained, 7 cm","description":"\u003cp\u003eGrade 52 Filter for Quantitative Analysis, General, 70 mm circle\u003c\/p\u003e\n\u003cp id=\"overview\" class=\"lead-paragraph\"\u003eCytiva's Whatman Grade 52 is a general-purpose filter paper for quantitative analysis in Büchner funnel and other vacuum filtrations. The acid-hardened surface and low ash content enable efficient precipitate recovery.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-quality cotton linters and treated to remove trace metals\u003c\/li\u003e\n\u003cli\u003eHigh wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eNominal particle retention of 7 µm\u003c\/li\u003e\n\u003cli\u003eMedium flow rate (Herzberg filtration speed 235 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eCompatible with Hirsch or Büchner funnel applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eCytiva's business offers three grades of hardened low ash filter paper. All three are designed for use in Hirsch and Büchner funnel applications and can be customized for an exact fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110955909435,"sku":"90-7510-03-PK","price":32.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7510-03_9d4e2764-2328-48e8-ad57-38a397c46c16.png?v=1784705444"},{"product_id":"whatman-grade-52-quantitative-low-ash-filter-paper-medium-precipitates-retained-9-cm","title":"Whatman Grade 52 Quantitative Low Ash Filter Paper, Medium Precipitates Retained, 9 cm","description":"\u003cp\u003eGrade 52 Filter for Quantitative Analysis, General, 90 mm circle\u003c\/p\u003e\n\u003cp id=\"overview\" class=\"lead-paragraph\"\u003eCytiva's Whatman Grade 52 is a general-purpose filter paper for quantitative analysis in Büchner funnel and other vacuum filtrations. The acid-hardened surface and low ash content enable efficient precipitate recovery.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-quality cotton linters and treated to remove trace metals\u003c\/li\u003e\n\u003cli\u003eHigh wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eNominal particle retention of 7 µm\u003c\/li\u003e\n\u003cli\u003eMedium flow rate (Herzberg filtration speed 235 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eCompatible with Hirsch or Büchner funnel applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eCytiva's business offers three grades of hardened low ash filter paper. All three are designed for use in Hirsch and Büchner funnel applications and can be customized for an exact fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110955974971,"sku":"90-7510-04-PK","price":72.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7510-04.png?v=1784705445"},{"product_id":"whatman-grade-52-quantitative-low-ash-filter-paper-medium-precipitates-retained-11-cm","title":"Whatman Grade 52 Quantitative Low Ash Filter Paper, Medium Precipitates Retained, 11 cm","description":"\u003cp\u003eGrade 52 Filter for Quantitative Analysis, General, 110 mm circle\u003c\/p\u003e\n\u003cp id=\"overview\" class=\"lead-paragraph\"\u003eCytiva's Whatman Grade 52 is a general-purpose filter paper for quantitative analysis in Büchner funnel and other vacuum filtrations. The acid-hardened surface and low ash content enable efficient precipitate recovery.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-quality cotton linters and treated to remove trace metals\u003c\/li\u003e\n\u003cli\u003eHigh wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eNominal particle retention of 7 µm\u003c\/li\u003e\n\u003cli\u003eMedium flow rate (Herzberg filtration speed 235 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eCompatible with Hirsch or Büchner funnel applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eCytiva's business offers three grades of hardened low ash filter paper. All three are designed for use in Hirsch and Büchner funnel applications and can be customized for an exact fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110956040507,"sku":"90-7510-05-PK","price":89.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7510-05.png?v=1784705447"},{"product_id":"whatman-grade-52-quantitative-low-ash-filter-paper-medium-precipitates-retained-12-5-cm","title":"Whatman Grade 52 Quantitative Low Ash Filter Paper, Medium Precipitates Retained, 12.5 cm","description":"\u003cp\u003eGrade 52 Filter for Quantitative Analysis, General, 125 mm circle\u003c\/p\u003e\n\u003cp id=\"overview\" class=\"lead-paragraph\"\u003eCytiva's Whatman Grade 52 is a general-purpose filter paper for quantitative analysis in Büchner funnel and other vacuum filtrations. The acid-hardened surface and low ash content enable efficient precipitate recovery.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-quality cotton linters and treated to remove trace metals\u003c\/li\u003e\n\u003cli\u003eHigh wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eNominal particle retention of 7 µm\u003c\/li\u003e\n\u003cli\u003eMedium flow rate (Herzberg filtration speed 235 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eCompatible with Hirsch or Büchner funnel applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eCytiva's business offers three grades of hardened low ash filter paper. All three are designed for use in Hirsch and Büchner funnel applications and can be customized for an exact fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110956073275,"sku":"90-7510-06-PK","price":102.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7510-06_0563845e-1882-447f-933f-cfb992acce68.png?v=1784705448"},{"product_id":"whatman-grade-52-quantitative-low-ash-filter-paper-medium-precipitates-retained-15-cm","title":"Whatman Grade 52 Quantitative Low Ash Filter Paper, Medium Precipitates Retained, 15 cm","description":"\u003cp\u003eGrade 52 Filter for Quantitative Analysis, General, 150 mm circle\u003c\/p\u003e\n\u003cp id=\"overview\" class=\"lead-paragraph\"\u003eCytiva's Whatman Grade 52 is a general-purpose filter paper for quantitative analysis in Büchner funnel and other vacuum filtrations. The acid-hardened surface and low ash content enable efficient precipitate recovery.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-quality cotton linters and treated to remove trace metals\u003c\/li\u003e\n\u003cli\u003eHigh wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eNominal particle retention of 7 µm\u003c\/li\u003e\n\u003cli\u003eMedium flow rate (Herzberg filtration speed 235 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eCompatible with Hirsch or Büchner funnel applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eCytiva's business offers three grades of hardened low ash filter paper. All three are designed for use in Hirsch and Büchner funnel applications and can be customized for an exact fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110956106043,"sku":"90-7510-07-PK","price":121.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7510-07.png?v=1784705449"},{"product_id":"whatman-grade-52-quantitative-low-ash-filter-paper-medium-precipitates-retained-24-cm","title":"Whatman Grade 52 Quantitative Low Ash Filter Paper, Medium Precipitates Retained, 24 cm","description":"\u003cp\u003eGrade 52 Filter for Quantitative Analysis, General, 240 mm circle\u003c\/p\u003e\n\u003cp id=\"overview\" class=\"lead-paragraph\"\u003eCytiva's Whatman Grade 52 is a general-purpose filter paper for quantitative analysis in Büchner funnel and other vacuum filtrations. The acid-hardened surface and low ash content enable efficient precipitate recovery.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-quality cotton linters and treated to remove trace metals\u003c\/li\u003e\n\u003cli\u003eHigh wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eNominal particle retention of 7 µm\u003c\/li\u003e\n\u003cli\u003eMedium flow rate (Herzberg filtration speed 235 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eCompatible with Hirsch or Büchner funnel applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eCytiva's business offers three grades of hardened low ash filter paper. All three are designed for use in Hirsch and Büchner funnel applications and can be customized for an exact fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110956138811,"sku":"90-7510-09-PK","price":267.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7510-09.png?v=1784705452"},{"product_id":"whatman-grade-54-quantitative-low-ash-filter-paper-coarse-precipitates-retained-5-5-cm","title":"Whatman Grade 54 Quantitative Low Ash Filter Paper, Coarse Precipitates Retained, 5.5 cm","description":"\u003cp\u003eCytiva Whatman Grade 54 hardened low ash quantitative filter paper for Büchner funnel and Hirsch funnel filtration enables fast vacuum suction filtration for recrystallization applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThis hard, smooth, high wet-strength Grade 54 fast filter paper enables collection of coarse and gelatinous precipitates with minimal fiber shredding, even when wet.\u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003eFast filters for vacuum filtration\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigher nominal particle retention rating (22 µm) than comparable Buchner funnel filter papers\u003c\/li\u003e\n\u003cli\u003eFast filtration speed (Herzberg filtration speed 39 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eAcid-treated for high wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eHardened to minimize fiber shedding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhatman low ash hardened filter paper for quantitative analysis is available in three grades. All three are designed for use in gravity and vacuum suction filtration in Büchner and Hirsch funnels.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110956237115,"sku":"90-7511-02-PK","price":45.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7511-02.png?v=1784705453"},{"product_id":"whatman-grade-54-quantitative-low-ash-filter-paper-coarse-precipitates-retained-7-cm","title":"Whatman Grade 54 Quantitative Low Ash Filter Paper, Coarse Precipitates Retained, 7 cm","description":"\u003cp\u003eCytiva Whatman Grade 54 hardened low ash quantitative filter paper for Büchner funnel and Hirsch funnel filtration enables fast vacuum suction filtration for recrystallization applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThis hard, smooth, high wet-strength Grade 54 fast filter paper enables collection of coarse and gelatinous precipitates with minimal fiber shredding, even when wet.\u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003eFast filters for vacuum filtration\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigher nominal particle retention rating (22 µm) than comparable Buchner funnel filter papers\u003c\/li\u003e\n\u003cli\u003eFast filtration speed (Herzberg filtration speed 39 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eAcid-treated for high wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eHardened to minimize fiber shedding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhatman low ash hardened filter paper for quantitative analysis is available in three grades. All three are designed for use in gravity and vacuum suction filtration in Büchner and Hirsch funnels.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110956269883,"sku":"90-7511-03-PK","price":52.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7511-03.png?v=1784705454"},{"product_id":"whatman-grade-54-quantitative-low-ash-filter-paper-coarse-precipitates-retained-9-cm","title":"Whatman Grade 54 Quantitative Low Ash Filter Paper, Coarse Precipitates Retained, 9 cm","description":"\u003cp\u003eCytiva Whatman Grade 54 hardened low ash quantitative filter paper for Büchner funnel and Hirsch funnel filtration enables fast vacuum suction filtration for recrystallization applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThis hard, smooth, high wet-strength Grade 54 fast filter paper enables collection of coarse and gelatinous precipitates with minimal fiber shredding, even when wet.\u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003eFast filters for vacuum filtration\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigher nominal particle retention rating (22 µm) than comparable Buchner funnel filter papers\u003c\/li\u003e\n\u003cli\u003eFast filtration speed (Herzberg filtration speed 39 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eAcid-treated for high wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eHardened to minimize fiber shedding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhatman low ash hardened filter paper for quantitative analysis is available in three grades. All three are designed for use in gravity and vacuum suction filtration in Büchner and Hirsch funnels.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110956302651,"sku":"90-7511-04-PK","price":73.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7511-04.png?v=1784705456"},{"product_id":"whatman-grade-54-quantitative-low-ash-filter-paper-coarse-precipitates-retained-11-cm","title":"Whatman Grade 54 Quantitative Low Ash Filter Paper, Coarse Precipitates Retained, 11 cm","description":"\u003cp\u003eCytiva Whatman Grade 54 hardened low ash quantitative filter paper for Büchner funnel and Hirsch funnel filtration enables fast vacuum suction filtration for recrystallization applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThis hard, smooth, high wet-strength Grade 54 fast filter paper enables collection of coarse and gelatinous precipitates with minimal fiber shredding, even when wet.\u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003eFast filters for vacuum filtration\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigher nominal particle retention rating (22 µm) than comparable Buchner funnel filter papers\u003c\/li\u003e\n\u003cli\u003eFast filtration speed (Herzberg filtration speed 39 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eAcid-treated for high wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eHardened to minimize fiber shedding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhatman low ash hardened filter paper for quantitative analysis is available in three grades. All three are designed for use in gravity and vacuum suction filtration in Büchner and Hirsch funnels.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110956335419,"sku":"90-7511-05-PK","price":89.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7511-05_c6cdf50c-13cc-44d6-b98c-6034b77bdbb7.png?v=1784705457"},{"product_id":"whatman-grade-54-quantitative-low-ash-filter-paper-coarse-precipitates-retained-12-5-cm","title":"Whatman Grade 54 Quantitative Low Ash Filter Paper, Coarse Precipitates Retained, 12.5 cm","description":"\u003cp\u003eCytiva Whatman Grade 54 hardened low ash quantitative filter paper for Büchner funnel and Hirsch funnel filtration enables fast vacuum suction filtration for recrystallization applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThis hard, smooth, high wet-strength Grade 54 fast filter paper enables collection of coarse and gelatinous precipitates with minimal fiber shredding, even when wet.\u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003eFast filters for vacuum filtration\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigher nominal particle retention rating (22 µm) than comparable Buchner funnel filter papers\u003c\/li\u003e\n\u003cli\u003eFast filtration speed (Herzberg filtration speed 39 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eAcid-treated for high wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eHardened to minimize fiber shedding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhatman low ash hardened filter paper for quantitative analysis is available in three grades. All three are designed for use in gravity and vacuum suction filtration in Büchner and Hirsch funnels.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110956400955,"sku":"90-7511-06-PK","price":102.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7511-06.png?v=1784705459"},{"product_id":"whatman-grade-54-quantitative-low-ash-filter-paper-coarse-precipitates-retained-15-cm","title":"Whatman Grade 54 Quantitative Low Ash Filter Paper, Coarse Precipitates Retained, 15 cm","description":"\u003cp\u003eCytiva Whatman Grade 54 hardened low ash quantitative filter paper for Büchner funnel and Hirsch funnel filtration enables fast vacuum suction filtration for recrystallization applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThis hard, smooth, high wet-strength Grade 54 fast filter paper enables collection of coarse and gelatinous precipitates with minimal fiber shredding, even when wet.\u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003eFast filters for vacuum filtration\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigher nominal particle retention rating (22 µm) than comparable Buchner funnel filter papers\u003c\/li\u003e\n\u003cli\u003eFast filtration speed (Herzberg filtration speed 39 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eAcid-treated for high wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eHardened to minimize fiber shedding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhatman low ash hardened filter paper for quantitative analysis is available in three grades. All three are designed for use in gravity and vacuum suction filtration in Büchner and Hirsch funnels.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110956466491,"sku":"90-7511-07-PK","price":121.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7511-07_e99c4c0e-54d3-490f-8766-5a21668d2a3a.png?v=1784705460"},{"product_id":"whatman-grade-54-quantitative-low-ash-filter-paper-coarse-precipitates-retained-18-5-cm","title":"Whatman Grade 54 Quantitative Low Ash Filter Paper, Coarse Precipitates Retained,18.5 cm","description":"\u003cp\u003eCytiva Whatman Grade 54 hardened low ash quantitative filter paper for Büchner funnel and Hirsch funnel filtration enables fast vacuum suction filtration for recrystallization applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThis hard, smooth, high wet-strength Grade 54 fast filter paper enables collection of coarse and gelatinous precipitates with minimal fiber shredding, even when wet.\u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003eFast filters for vacuum filtration\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigher nominal particle retention rating (22 µm) than comparable Buchner funnel filter papers\u003c\/li\u003e\n\u003cli\u003eFast filtration speed (Herzberg filtration speed 39 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eAcid-treated for high wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eHardened to minimize fiber shedding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhatman low ash hardened filter paper for quantitative analysis is available in three grades. All three are designed for use in gravity and vacuum suction filtration in Büchner and Hirsch funnels.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110956499259,"sku":"90-7511-08-PK","price":132.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7511-08_1ab98f3a-c482-4540-85ed-39ba28b199ed.png?v=1784705462"},{"product_id":"whatman-grade-54-quantitative-low-ash-filter-paper-coarse-precipitates-retained-24-cm","title":"Whatman Grade 54 Quantitative Low Ash Filter Paper, Coarse Precipitates Retained, 24 cm","description":"\u003cp\u003eCytiva Whatman Grade 54 hardened low ash quantitative filter paper for Büchner funnel and Hirsch funnel filtration enables fast vacuum suction filtration for recrystallization applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThis hard, smooth, high wet-strength Grade 54 fast filter paper enables collection of coarse and gelatinous precipitates with minimal fiber shredding, even when wet.\u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003eFast filters for vacuum filtration\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigher nominal particle retention rating (22 µm) than comparable Buchner funnel filter papers\u003c\/li\u003e\n\u003cli\u003eFast filtration speed (Herzberg filtration speed 39 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eAcid-treated for high wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eHardened to minimize fiber shedding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhatman low ash hardened filter paper for quantitative analysis is available in three grades. All three are designed for use in gravity and vacuum suction filtration in Büchner and Hirsch funnels.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110956532027,"sku":"90-7511-09-PK","price":267.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7511-09_43917590-77f9-4ab1-97fa-e69ecfc60acf.png?v=1784705464"},{"product_id":"whatman-grade-54-quantitative-low-ash-filter-paper-coarse-precipitates-retained-32-cm","title":"Whatman Grade 54 Quantitative Low Ash Filter Paper, Coarse Precipitates Retained, 32 cm","description":"\u003cp\u003eCytiva Whatman Grade 54 hardened low ash quantitative filter paper for Büchner funnel and Hirsch funnel filtration enables fast vacuum suction filtration for recrystallization applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThis hard, smooth, high wet-strength Grade 54 fast filter paper enables collection of coarse and gelatinous precipitates with minimal fiber shredding, even when wet.\u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003eFast filters for vacuum filtration\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigher nominal particle retention rating (22 µm) than comparable Buchner funnel filter papers\u003c\/li\u003e\n\u003cli\u003eFast filtration speed (Herzberg filtration speed 39 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eAcid-treated for high wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eHardened to minimize fiber shedding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhatman low ash hardened filter paper for quantitative analysis is available in three grades. All three are designed for use in gravity and vacuum suction filtration in Büchner and Hirsch funnels.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110956564795,"sku":"90-7511-11-PK","price":485.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7511-11.png?v=1784705465"},{"product_id":"whatman-grade-54-quantitative-low-ash-filter-paper-coarse-precipitates-retained-50-cm","title":"Whatman Grade 54 Quantitative Low Ash Filter Paper, Coarse Precipitates Retained, 50 cm","description":"\u003cp\u003eCytiva Whatman Grade 54 hardened low ash quantitative filter paper for Büchner funnel and Hirsch funnel filtration enables fast vacuum suction filtration for recrystallization applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThis hard, smooth, high wet-strength Grade 54 fast filter paper enables collection of coarse and gelatinous precipitates with minimal fiber shredding, even when wet.\u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003eFast filters for vacuum filtration\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigher nominal particle retention rating (22 µm) than comparable Buchner funnel filter papers\u003c\/li\u003e\n\u003cli\u003eFast filtration speed (Herzberg filtration speed 39 s)\u003c\/li\u003e\n\u003cli\u003eHigh purity (0.015% ash maximum)\u003c\/li\u003e\n\u003cli\u003eAcid-treated for high wet-strength and chemical resistance\u003c\/li\u003e\n\u003cli\u003eHardened to minimize fiber shedding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhatman low ash hardened filter paper for quantitative analysis is available in three grades. All three are designed for use in gravity and vacuum suction filtration in Büchner and Hirsch funnels.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110956663099,"sku":"90-7511-14-PK","price":1044.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7511-14.png?v=1784705466"},{"product_id":"quantitative-filter-paper-grade-54-ashless-24-cm-diameter-10-microns-pore-100-pk-ahlstrom-0540-2400","title":"Quantitative Filter Paper, Grade 54, Ashless, 24 cm Diameter, 10 microns Pore, 100\/PK, Ahlstrom, 0540-2400","description":"\u003cp\u003e\u003cstrong\u003eAhlstrom® Quantitative Filter Paper, Grade 54, Ashless, 24 cm Diameter, 10 microns Pore, 100\/PK, 0540-2400\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e10 microns, Fast Speed filter paper for quantitative gravimetric techniques\u003c\/li\u003e\n\u003cli\u003eMedium loading capacity\u003c\/li\u003e\n\u003cli\u003eAcid-washed and ashless for gravimetric and instrumental analysis\u003c\/li\u003e\n\u003cli\u003eHigh purity and uniformity\u003c\/li\u003e\n\u003cli\u003eFast filtering grade for rapid filtration of coarse particles and gelatinous precipitates such as iron, zirconium and aluminum hydroxides, and cobalt sulfide\u003c\/li\u003e\n\u003cli\u003eGrade 54 is also used in air pollution testing to determine gaseous compounds\u003c\/li\u003e\n\u003cli\u003eRecommended for fast analysis procedures for unstable precipitates such as silicon, which requires speedy filtration\u003c\/li\u003e\n\u003cli\u003eFor coal, mining, cement, and metallurgical laboratories, Grade 54 is often selected when filtration speed is critical and the precipitate is relatively coarse—common alternative to slower grades such as 74 and 94\u003c\/li\u003e\n\u003cli\u003eConsidered equivalent to Cytiva® Whatman® Grade 41\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ahlstrom","offers":[{"title":"PK (1)","offer_id":51385336463675,"sku":"12-4595-99-PK","price":148.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/12-4595-99_02f2e69b-6ebb-4c71-8de3-fafe26542974.png?v=1785302384"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/collections\/imgi_4_802070803.jpg?v=1762207688","url":"https:\/\/preiser.com\/collections\/grades-52-54-whatman.oembed","provider":"Preiser Scientific","version":"1.0","type":"link"}