{"product_id":"cod-high-range-reagent-vials-dichromate-method-25-pk-hanna-instruments-hi93754c-25","title":"COD High Range Reagent Vials, Dichromate Method, 25\/PK, Hanna Instruments, HI93754C-25","description":"\u003cp\u003e\u003cstrong\u003eHanna Instruments® COD High Range Reagent Vials, Dichromate Method, 25\/PK, HI93754C-25\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAppearance:  dense orange liquid\u003c\/li\u003e \u003cli\u003eCAS Nos.: \u003cul\u003e \u003cli\u003eSulfuric Acid:  7664-93-9\u003c\/li\u003e \u003cli\u003eMercury (II) Sulfate:  7783-35-9\u003c\/li\u003e \u003cli\u003eSilver Sulfate:  10294-26-5\u003c\/li\u003e \u003cli\u003ePotassium Dichromate:  7778-50-9\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003eReagent vials that follow EPA approved method 410.4 for determination of chemical oxygen demand (COD) high range using compatible benchtop photometer\u003c\/li\u003e \u003cli\u003eHeated digestion is required to oxidize organic matter in sample\u003c\/li\u003e \u003cli\u003eDuring digestion, hexavalent chromium in reagent is reduced to trivalent chromium\u003c\/li\u003e \u003cli\u003eAmount of reduced chromium is then measured colorimetrically\u003c\/li\u003e \u003cli\u003eIntensity of color is determined by compatible photometer and COD concentration is displayed in mg\/L (ppm) O\u003csub\u003e2\u003c\/sub\u003e\n\u003c\/li\u003e \u003cli\u003eDesigned to be used with samples that have an expected range of 0 to 15000 mg\/L O\u003csub\u003e2\u003c\/sub\u003e\n\u003c\/li\u003e \u003cli\u003eThese high quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on each box for traceability\u003c\/li\u003e \u003cli\u003ePre-dosed reagents for ease of use\u003c\/li\u003e \u003cli\u003eSupplied with certificate of quality\u003c\/li\u003e \u003cli\u003eMarked with expiration date and lot number for traceability\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003csmall\u003eNote: It is important to treat used vials as hazardous waste, as mercury waste requires recycling\u003c\/small\u003e\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"PK (1)","offer_id":51110908035387,"sku":"90-4774-63-PK","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-4774-63.png?v=1784704200","url":"https:\/\/preiser.com\/products\/cod-high-range-reagent-vials-dichromate-method-25-pk-hanna-instruments-hi93754c-25","provider":"Preiser Scientific","version":"1.0","type":"link"}