{"id":1582110405,"title":"HANNA HI 3845 CTK Chromium VI","handle":"hi3845","description":"\u003cp\u003eChromium salts are widely used in industrial processes. in galvanic plants. in tanneries and chemical manufacturing plants. Chromium can therefore be found in industrial discharges and must be monitored because of its toxic nature.\u003c\/p\u003e\n\u003cp\u003eThe HANNA chromium test kit is field portable and can also be used in the laboratory. HI?3845 is able to determine traces of chromium up to 1000 ppm.\u003c\/p\u003e\n\u003cp\u003eChromate is determined by a titrimetric method. Only the hexavalent chromium will react with iodide in acid solution. (Step 1:) The amount of iodine generated is equivalent to the chromium in the sample. (Step 2:) The liberated iodine is then titrated with standard sodium thiosulfate solution that reduces the iodine back to iodide ions.\u003c\/p\u003e\n\u003cp\u003eStep 1:     \u003cbr\u003e 2(CrO\u003csub\u003e\u003cspan style=\"font-size: small;\"\u003e4\u003c\/span\u003e\u003c\/sub\u003e)\u003csup\u003e\u003cspan style=\"font-size: small;\"\u003e2-\u003c\/span\u003e\u003c\/sup\u003e + 16H\u003csup\u003e\u003cspan style=\"font-size: small;\"\u003e+\u003c\/span\u003e\u003c\/sup\u003e + 6I\u003csup\u003e\u003cspan style=\"font-size: small;\"\u003e—\u003c\/span\u003e\u003c\/sup\u003e → 3I\u003csub\u003e\u003cspan style=\"font-size: small;\"\u003e2\u003c\/span\u003e\u003c\/sub\u003e + 8H\u003csub\u003e\u003cspan style=\"font-size: small;\"\u003e2\u003c\/span\u003e\u003c\/sub\u003eO + 2Cr\u003csup\u003e\u003cspan style=\"font-size: small;\"\u003e3+\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e\n\u003cp\u003eStep 2:     \u003cbr\u003e I\u003csub\u003e\u003cspan style=\"font-size: small;\"\u003e2\u003c\/span\u003e\u003c\/sub\u003e + 2(S\u003csub\u003e\u003cspan style=\"font-size: small;\"\u003e2\u003c\/span\u003e\u003c\/sub\u003eO\u003csub\u003e\u003cspan style=\"font-size: small;\"\u003e3\u003c\/span\u003e\u003c\/sub\u003e)\u003csup\u003e\u003cspan style=\"font-size: small;\"\u003e2–\u003c\/span\u003e\u003c\/sup\u003e → 2I— + (S\u003csub\u003e\u003cspan style=\"font-size: small;\"\u003e4\u003c\/span\u003e\u003c\/sub\u003eO\u003csub\u003e\u003cspan style=\"font-size: small;\"\u003e6\u003c\/span\u003e\u003c\/sub\u003e)\u003csup\u003e\u003cspan style=\"font-size: small;\"\u003e2-\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003cbr\u003e HI 3845 test kit comes with chromium MR-HR reagent A (100 packets). 17 g chromium MR-HR reagent B. 60 mL chromium MR-HR reagent C. 25 mL starch indicator. 20 mL calibrated vessel. 1 mL plastic pipette. graduated plastic test tube with cap.\u003c\/p\u003e\n\u003cdiv\u003e\u003cstrong\u003eProduct Manuals\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"http:\/\/www.hannainst.com\/usa\/images\/icon-pdf.gif\" alt=\"\" width=\"20\" height=\"22\" align=\"absmiddle\" border=\"0\"\u003e  Manual: \u003ca title=\"Download Product Manual\" href=\"http:\/\/www.hannainst.com\/manuals\/manHI_3845.pdf\" target=\"_blank\"\u003eDownload\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification :\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethod\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eTitration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e0-100 mg\/L\u003cbr\u003e 100-1000 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmallest Increment\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e5 mg\/L\u003cbr\u003e 50 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical Method\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eIodometric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Tests\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eapprox. 100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e416 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e","published_at":"2026-06-25T16:23:26+12:00","created_at":"2015-09-01T15:08:59+12:00","vendor":"Hanna Instruments","type":"Electrochemical","tags":["Manufacturer_Hanna Instruments","Type_Chemical Test Kits"],"price":7200,"price_min":7200,"price_max":7200,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":4857187141,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"HI3845","requires_shipping":false,"taxable":true,"featured_image":null,"available":true,"name":"HANNA HI 3845 CTK Chromium VI","public_title":null,"options":["Default Title"],"price":7200,"weight":0,"compare_at_price":null,"inventory_quantity":1,"inventory_management":null,"inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/acornsci.co.nz\/cdn\/shop\/products\/31gluhj8kul__sl500_aa300_51e06c9e8dbc0_2015.jpeg?v=1465536741"],"featured_image":"\/\/acornsci.co.nz\/cdn\/shop\/products\/31gluhj8kul__sl500_aa300_51e06c9e8dbc0_2015.jpeg?v=1465536741","options":["Title"],"media":[{"alt":"HI 3845 CTK Chromium VI - Acorn Scientific","id":21281308771,"position":1,"preview_image":{"aspect_ratio":1.0,"height":400,"width":400,"src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/31gluhj8kul__sl500_aa300_51e06c9e8dbc0_2015.jpeg?v=1465536741"},"aspect_ratio":1.0,"height":400,"media_type":"image","src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/31gluhj8kul__sl500_aa300_51e06c9e8dbc0_2015.jpeg?v=1465536741","width":400}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eChromium salts are widely used in industrial processes. in galvanic plants. in tanneries and chemical manufacturing plants. Chromium can therefore be found in industrial discharges and must be monitored because of its toxic nature.\u003c\/p\u003e\n\u003cp\u003eThe HANNA chromium test kit is field portable and can also be used in the laboratory. HI?3845 is able to determine traces of chromium up to 1000 ppm.\u003c\/p\u003e\n\u003cp\u003eChromate is determined by a titrimetric method. Only the hexavalent chromium will react with iodide in acid solution. (Step 1:) The amount of iodine generated is equivalent to the chromium in the sample. (Step 2:) The liberated iodine is then titrated with standard sodium thiosulfate solution that reduces the iodine back to iodide ions.\u003c\/p\u003e\n\u003cp\u003eStep 1:     \u003cbr\u003e 2(CrO\u003csub\u003e\u003cspan style=\"font-size: small;\"\u003e4\u003c\/span\u003e\u003c\/sub\u003e)\u003csup\u003e\u003cspan style=\"font-size: small;\"\u003e2-\u003c\/span\u003e\u003c\/sup\u003e + 16H\u003csup\u003e\u003cspan style=\"font-size: small;\"\u003e+\u003c\/span\u003e\u003c\/sup\u003e + 6I\u003csup\u003e\u003cspan style=\"font-size: small;\"\u003e—\u003c\/span\u003e\u003c\/sup\u003e → 3I\u003csub\u003e\u003cspan style=\"font-size: small;\"\u003e2\u003c\/span\u003e\u003c\/sub\u003e + 8H\u003csub\u003e\u003cspan style=\"font-size: small;\"\u003e2\u003c\/span\u003e\u003c\/sub\u003eO + 2Cr\u003csup\u003e\u003cspan style=\"font-size: small;\"\u003e3+\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e\n\u003cp\u003eStep 2:     \u003cbr\u003e I\u003csub\u003e\u003cspan style=\"font-size: small;\"\u003e2\u003c\/span\u003e\u003c\/sub\u003e + 2(S\u003csub\u003e\u003cspan style=\"font-size: small;\"\u003e2\u003c\/span\u003e\u003c\/sub\u003eO\u003csub\u003e\u003cspan style=\"font-size: small;\"\u003e3\u003c\/span\u003e\u003c\/sub\u003e)\u003csup\u003e\u003cspan style=\"font-size: small;\"\u003e2–\u003c\/span\u003e\u003c\/sup\u003e → 2I— + (S\u003csub\u003e\u003cspan style=\"font-size: small;\"\u003e4\u003c\/span\u003e\u003c\/sub\u003eO\u003csub\u003e\u003cspan style=\"font-size: small;\"\u003e6\u003c\/span\u003e\u003c\/sub\u003e)\u003csup\u003e\u003cspan style=\"font-size: small;\"\u003e2-\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003cbr\u003e HI 3845 test kit comes with chromium MR-HR reagent A (100 packets). 17 g chromium MR-HR reagent B. 60 mL chromium MR-HR reagent C. 25 mL starch indicator. 20 mL calibrated vessel. 1 mL plastic pipette. graduated plastic test tube with cap.\u003c\/p\u003e\n\u003cdiv\u003e\u003cstrong\u003eProduct Manuals\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"http:\/\/www.hannainst.com\/usa\/images\/icon-pdf.gif\" alt=\"\" width=\"20\" height=\"22\" align=\"absmiddle\" border=\"0\"\u003e  Manual: \u003ca title=\"Download Product Manual\" href=\"http:\/\/www.hannainst.com\/manuals\/manHI_3845.pdf\" target=\"_blank\"\u003eDownload\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification :\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethod\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eTitration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e0-100 mg\/L\u003cbr\u003e 100-1000 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmallest Increment\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e5 mg\/L\u003cbr\u003e 50 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical Method\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eIodometric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Tests\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eapprox. 100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e416 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e"}