{"product_id":"formaldehyde-test-kit-visual-colorimetric-analysis-0-1-1-5-ppm-purpald-method-chemetrics-inc-k-4605","title":"Formaldehyde Test Kit, Visual Colorimetric Analysis, 0-1 \u0026 1-5 ppm, Purpald Method, Chemetrics, Inc., K-4605","description":"\u003cp\u003e\u003cstrong\u003eCHEMetrics® Formaldehyde—CHEMets Visual Kit, 30 Ampoules\/EA, 0 to 1 and 1-10 ppm, K-4605\n\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePurpald Method\u003cstrong\u003e—\u003c\/strong\u003eReference: Purpald developed by Aldrich Chemical Co.\u003c\/li\u003e\n\u003cli\u003ePurpald  subject to fewer interferences than Shiffs reagent or chromotropic acid procedures\u003c\/li\u003e\n\u003cli\u003ePurple-colored complex formed when Purpald in alkaline solution reacts with formaldehyde\u003c\/li\u003e\n\u003cli\u003eResults are expressed as ppm (mg\/L) CH\u003csub\u003e2\u003c\/sub\u003eO\u003c\/li\u003e\n\u003cli\u003eShelf-life:  5 months\u003c\/li\u003e\n\u003cli\u003eAppearance:\n\u003cul\u003e\n\u003cli\u003eAmpoules:  colorless to straw yellow liquid\u003c\/li\u003e\n\u003cli\u003eA-4201: various solid\u003c\/li\u003e\n\u003cli\u003eA-4202:  colorless liquid\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eCAS Nos.:\n\u003cul\u003e\n\u003cli\u003eAmpoules:\n\u003cul\u003e\n\u003cli\u003eWater:  7732-18-5\u003c\/li\u003e\n\u003cli\u003ePotassium Hydroxide:  1310-58-3\u003c\/li\u003e\n\u003cli\u003ePurpald:  1750-12-5\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eA-4201:\n\u003cul\u003e\n\u003cli\u003eSodium Persulfate:  7775-27-1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eA-4202:\n\u003cul\u003e\n\u003cli\u003ePotassium Hydroxide:  1310-58-3\u003c\/li\u003e\n\u003cli\u003eWater:  7732-18-5\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003eIncluded in Kit:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003ePlastic case\u003c\/li\u003e\n\u003cli\u003eRefill Reagent Ampoules, 30\u003c\/li\u003e\n\u003cli\u003eLow range comparator\u003c\/li\u003e\n\u003cli\u003eHigh range comparator\u003c\/li\u003e\n\u003cli\u003eFormaldehyde activator solutions, A-4201 and A-4202\u003c\/li\u003e\n\u003cli\u003e25 mL sample cup\u003c\/li\u003e\n\u003cli\u003eInstructions\u003c\/li\u003e\n\u003cli\u003eSDS\u003c\/li\u003e\n\u003cli\u003e(Distilled water require)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Chemetrics","offers":[{"title":"EA (1)","offer_id":51111467024699,"sku":"CHZ-K4605-EA","price":95.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/CHZ-K4605.png?v=1784717975","url":"https:\/\/preiser.com\/products\/formaldehyde-test-kit-visual-colorimetric-analysis-0-1-1-5-ppm-purpald-method-chemetrics-inc-k-4605","provider":"Preiser Scientific","version":"1.0","type":"link"}