{"product_id":"chlorine-test-kit-refills-visual-colorimetric-analysis-0-1-1-5-ppm-ddpd-method-chemetrics-inc-r-2505","title":"Chlorine Test Kit Refills, Visual Colorimetric Analysis, 0-1 \u0026 1-5 ppm, DDPD Method, Chemetrics, Inc., R-2505","description":"\u003cp\u003e\u003cstrong\u003eCHEMetrics® Colorimetric Chlorine D DPD Test Refill for \u003cspan\u003e\u003cspan style=\"text-decoration: underline; color: #000080;\"\u003eCHZ-K2505-01\u003c\/span\u003e\u003c\/span\u003e Range: 0 to 1 and 0 to 5 mg\/L (ppm), 30 Ampoules\/PK, R-2505\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eD DPD Method (Reference: Developed by CHEMetrics, Inc.)−derived from DPD method\u003c\/li\u003e\n\u003cli\u003eWell suited for use where biocides and chromate corrosion inhibitors are used simultaneously\u003c\/li\u003e\n\u003cli\u003eDDPD reacts with free chlorine to form a purple product\u003c\/li\u003e\n\u003cli\u003eIn presence of ammonia or amines, some of the chlorine may exist as \u003cem\u003ecombined chlorine\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003eTo determine total chlorine (the sum of free and combined), use the A-2500 Activator Solution (potassium iodide) that is supplied in the kit\u003c\/li\u003e\n\u003cli\u003eResults are expressed as ppm (mg\/L) Cl\u003csub\u003e2\u003c\/sub\u003e\n\u003c\/li\u003e\n\u003cli\u003eDDPD method is also applicable to the direct determination of hypochlorite concentrations in various cleaning preparations and disinfectants prior to their dilution−DDPD compound reacts with hypochlorite ions to form a purple color\u003c\/li\u003e\n\u003cli\u003eResults are expressed as percent (%) NaOCl\u003c\/li\u003e\n\u003cli\u003eAppearance:  colorless liquid\u003c\/li\u003e\n\u003cli\u003eCAS Nos.:\n\u003cul\u003e\n\u003cli\u003eWater:  7732-18-5\u003c\/li\u003e\n\u003cli\u003eMethanol:  67-56-1\u003c\/li\u003e\n\u003cli\u003ePotassium Phosphate, Monobasic:  7778-77-0\u003c\/li\u003e\n\u003cli\u003eEDTA Disodium Salt Dihydrate:  6381-92-6\u003c\/li\u003e\n\u003cli\u003eSulfuric Acid:  7664-93-9\u003c\/li\u003e\n\u003cli\u003eProprietary Ingredient\u003c\/li\u003e\n\u003cli\u003eFormaldehyde:  50-00-0\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\n \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e ⚠  WARNING!\u003c\/strong\u003e This product can expose you to chemicals including formaldehyde, which is known to the State of California to cause cancer, and methanol, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to \u003cspan\u003e\u003cspan style=\"text-decoration: underline; color: #000080;\"\u003ewww.P65Warnings.ca.gov\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Chemetrics","offers":[{"title":"EA (1)","offer_id":51111469023547,"sku":"CHZ-R2505-EA","price":37.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/CHZ-R2505.png?v=1784718052","url":"https:\/\/preiser.com\/products\/chlorine-test-kit-refills-visual-colorimetric-analysis-0-1-1-5-ppm-ddpd-method-chemetrics-inc-r-2505","provider":"Preiser Scientific","version":"1.0","type":"link"}