{"product_id":"pretreatment-reducing-solution-for-orp-electrodes-500-ml-hanna-instruments-hi7091l","title":"Pretreatment Reducing Solution for ORP Electrodes, 500 mL, Hanna Instruments, HI7091L","description":"\u003cp\u003e\u003cstrong\u003eHanna Instruments® Pretreatment Reducing Solution for ORP Electrodes, 500 mL, HI7091L\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAppearance: \u003cul\u003e \u003cli\u003eReducing Pre-Treatment Solution Component I:  light blue powder\u003c\/li\u003e \u003cli\u003eReducing Pre-Treatment Solution Component II:  colorless liquid\u003c\/li\u003e \u003cli\u003eReducing Pre-Treatment Solution - Mixed:  light green liquid\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003eCAS Nos.: \u003cul\u003e \u003cli\u003eReducing Pre-Treatment Solution Component I:   \u003cul\u003e \u003cli\u003eIron (II) Sulfate:  7782-63-0\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003eReducing Pre-Treatment Solution Component II: \u003cul\u003e \u003cli\u003eSulfuric Acid:  7664-93-9\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003eReducing Pre-Treatment Solution - Mixed:   \u003cul\u003e \u003cli\u003eIron (II) Sulfate:  7782-63-0\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003eReducing pretreatment solution for conditioning an ORP electrode used to measure reduction reactions\u003c\/li\u003e \u003cli\u003eAir tight bottles with tamper-proof seals to ensure the quality and clearly marked with lot number and expiration date on label\u003c\/li\u003e \u003cli\u003eORP (Oxidation Reduction Potential) electrodes are used to measure chemical reaction in which one species is being oxidized and another is being reduced\u003c\/li\u003e \u003cli\u003eLoss of electrons by element or compound is known as oxidation reaction while gaining of electrons by element or compound is known as reduction reaction\u003c\/li\u003e \u003cli\u003eFor example, plating companies that have hexavalent chromium (Cr\u003csup\u003e6+\u003c\/sup\u003e) in their wastewater must reduce it to a safer trivalent chromium (Cr\u003csup\u003e3+\u003c\/sup\u003e) form\u003c\/li\u003e \u003cli\u003eThis reduction reaction occurs in presence of a strong reductant such as sodium metabisulfite\u003c\/li\u003e \u003cli\u003eAddition of reductant must be measured with an ORP electrode to ensure that there is an adequate reducing potential\u003c\/li\u003e \u003cli\u003eReducing pretreatment solution prior to taking a measurement provides for a faster response time in a reducing environment\u003c\/li\u003e \u003cli\u003eTo use, soak the ORP electrode in the pretreatment solution for 15 minutes prior to use\u003c\/li\u003e \u003cli\u003eAs a general rule, if mV reading corresponding to the pH measurement is lower than value in table below, HI7091L (\u003cspan\u003e\u003cspan style=\"text-decoration:\" underline color:\u003e92-1624-33\u003c\/span\u003e\u003c\/span\u003e) reducing pretreatment solution is used\u003c\/li\u003e \u003cli\u003eIf mV reading corresponding to pH measurement is higher than value in table below, HI7092L (\u003cspan\u003e\u003cspan style=\"text-decoration:\" underline color:\u003e92-1624-32\u003c\/span\u003e\u003c\/span\u003e) oxidizing pretreatment should be used\u003c\/li\u003e \u003c\/ul\u003e \u003ctable style=\"width:\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003epH Value\u003c\/td\u003e \u003ctd\u003emV Value\u003c\/td\u003e \u003ctd\u003epH Value\u003c\/td\u003e \u003ctd\u003emV Value\u003c\/td\u003e \u003ctd\u003epH Value\u003c\/td\u003e \u003ctd\u003emV Value\u003c\/td\u003e \u003ctd\u003epH Value\u003c\/td\u003e \u003ctd\u003emV Value\u003c\/td\u003e \u003ctd\u003epH Value\u003c\/td\u003e \u003ctd\u003emV Value\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e0\u003c\/td\u003e \u003ctd\u003e990\u003c\/td\u003e \u003ctd\u003e3\u003c\/td\u003e \u003ctd\u003e800\u003c\/td\u003e \u003ctd\u003e6\u003c\/td\u003e \u003ctd\u003e640\u003c\/td\u003e \u003ctd\u003e9\u003c\/td\u003e \u003ctd\u003e460\u003c\/td\u003e \u003ctd\u003e12\u003c\/td\u003e \u003ctd\u003e280\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e1\u003c\/td\u003e \u003ctd\u003e920\u003c\/td\u003e \u003ctd\u003e4\u003c\/td\u003e \u003ctd\u003e740\u003c\/td\u003e \u003ctd\u003e7\u003c\/td\u003e \u003ctd\u003e580\u003c\/td\u003e \u003ctd\u003e10\u003c\/td\u003e \u003ctd\u003e400\u003c\/td\u003e \u003ctd\u003e13\u003c\/td\u003e \u003ctd\u003e220\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e2\u003c\/td\u003e \u003ctd\u003e860\u003c\/td\u003e \u003ctd\u003e5\u003c\/td\u003e \u003ctd\u003e680\u003c\/td\u003e \u003ctd\u003e8\u003c\/td\u003e \u003ctd\u003e520\u003c\/td\u003e \u003ctd\u003e11\u003c\/td\u003e \u003ctd\u003e340\u003c\/td\u003e \u003ctd\u003e14\u003c\/td\u003e \u003ctd\u003e160\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e","brand":"Hanna Instruments","offers":[{"title":"EA (1)","offer_id":51184678371643,"sku":"92-1624-33-EA","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/92-1624-33.png?v=1784711446","url":"https:\/\/preiser.com\/products\/pretreatment-reducing-solution-for-orp-electrodes-500-ml-hanna-instruments-hi7091l","provider":"Preiser Scientific","version":"1.0","type":"link"}