{"product_id":"pretreatment-reducing-solution-for-orp-electrodes-500-ml-hi7091l","title":"Pretreatment Reducing Solution for ORP electrodes (500 mL) - HI7091L","description":"\u003cp\u003eORP (Oxidation Reduction Potential) electrodes are used to measure a chemical reaction in which one species is being oxidized and another is being reduced. The loss of electrons by an element or compound is known as oxidation reaction while the gaining of electrons by an element or compound is known as reduction reaction. For 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. This reduction reaction occurs in the presence of a strong reductant such as sodium metabisulfite. The addition of the reductant must be measured with an ORP electrode to ensure that there is an adequate reducing potential. Using the HI7091L reducing pretreatment solution prior to taking a measurement provides for a faster response time in a reducing environment.\u003c\/p\u003e\n\u003cp\u003eTo use,  soak the ORP electrode in the pretreatment solution for 15 minutes prior to use. As a general rule,  if the mV reading corresponding to the pH measurement is lower than the value in the table below the reducing pretreatment solution (HI7091) is used. If the mV reading corresponding to the pH measurement is higher than the value in the table below then the oxidizing pretreatment (HI7092) should be used.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x: auto; margin: 0 0 32px;\"\u003e\u003ctable border=\"1\" cellspacing=\"3\" cellpadding=\"5\" align=\"center\"\u003e\n\t\t\t\u003ctr\u003e\n\t\t\t\t\u003ctd\u003epH Value\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003emV Value\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003epH Value\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003emV Value\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003epH Value\u0026lt;\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003emV Value\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003epH Value\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003emV Value\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003epH Value\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003emV Value\u003c\/td\u003e\n\t\t\t\u003c\/tr\u003e\n\t\t\t\u003ctr\u003e\n\t\t\t\t\u003ctd\u003e0\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e990\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e3\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e800\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e6\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e640\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e9\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e460\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e12\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e280\u003c\/td\u003e\n\t\t\t\u003c\/tr\u003e\n\t\t\t\u003ctr\u003e\n\t\t\t\t\u003ctd\u003e1\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e920\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e4\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e740\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e7\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e580\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e10\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e400\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e13\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e220\u003c\/td\u003e\n\t\t\t\u003c\/tr\u003e\n\t\t\t\u003ctr\u003e\n\t\t\t\t\u003ctd\u003e2\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e860\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e5\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e680\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e8\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e520\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e11\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e340\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e14\u003c\/td\u003e\n\t\t\t\t\u003ctd\u003e160\u003c\/td\u003e\n\t\t\t\u003c\/tr\u003e\n\t\t\t\n\t\t\t\u003c\/table\u003e\u003c\/div\u003e\n\u003ch4\u003eThe HI7091 bottle is labeled with\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProduct code\u003c\/li\u003e\n\u003cli\u003eLot number\u003c\/li\u003e\n\u003cli\u003eExpiration date\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAir tight bottle with tamper-proof seal\u003c\/h4\u003e\n\u003cul\u003e\u003cli\u003eEnsures quality and freshness of solution\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e HI709-25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eName\u003c\/td\u003e\n\u003ctd\u003e Manganese High-Range Checker\u003csup\u003e®\u003c\/sup\u003e HC Reagents (25 Tests) - HI709-25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003e Packets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e 25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e adaptation of the Standard Methods for the Examination of Water and Wastewater, 18\u003csup\u003eth\u003c\/sup\u003e edition, Periodate method. The reaction between manganese and reagents causes a pink tint in the sample.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eManuals\u003c\/h3\u003e\u003cp\u003e\u003ca target=\"_blank\" href=\"https:\/\/manuals.hannainst.com\/HI709-25\"\u003eManganese High-Range Checker\u003csup\u003e®\u003c\/sup\u003e HC Reagents (25 Tests) - HI709-25\u003c\/a\u003e\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":67871248449905,"sku":"HI7091L","price":3002.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/9535\/5761\/files\/hi7091l_1.jpg?v=1792645929","url":"https:\/\/hannainst.in\/products\/pretreatment-reducing-solution-for-orp-electrodes-500-ml-hi7091l","provider":"hanna","version":"1.0","type":"link"}