{"id":3997957685347,"title":"VINTESSENTIAL 4A190 Free Sulphur Dioxide 30 Test Kit for Spectrophotometers","handle":"free-sulfur-dioxide-30-test-kit","description":"\u003cp\u003eSulphur dioxide is used as a preservative in wine and there are restrictions limiting the amount that can be added in most wine producing countries. This test kit is a fast and easy way to determine the amount of free sulfur dioxide in wine samples, without the need for the laborious setup associated with traditional methods. Additionally, unlike some other commercial products this test kit does not contain\u003cbr\u003e formaldehyde, which is a known carcinogen.\u003c\/p\u003e\n\u003cp\u003eFor this Test Kit semi-micro curvettes are required.\u003c\/p\u003e\n\u003cp\u003ePRINCIPLE OF MEASUREMENT\u003cbr\u003e The amount of  sulphite present in wine is measured by monitoring the reaction with a chromogen under acidic conditions. The reduction of the chromogen leads to formation of a strongly absorbing compound which can be measured at 340 nm.\u003c\/p\u003e\n\u003cp\u003eThe measured amount of the activated chromogen is stoichiometrically proportional to the amount of free sulphite present.\u003c\/p\u003e","published_at":"2019-08-27T13:36:37+12:00","created_at":"2019-08-27T13:45:13+12:00","vendor":"Vintessential","type":"Wine Testing","tags":["brand_Vintessential","Category_Enzymatic Kits","Category_Wine Testing","Industry_Wine Manufacturing","Manufacturer_Vintessential","Type_For Spectrophotometers"],"price":0,"price_min":0,"price_max":0,"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":29814367944803,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"VINTESSENTIAL 4A190 Free Sulphur Dioxide 30 Test Kit for Spectrophotometers","public_title":null,"options":["Default Title"],"price":0,"weight":0,"compare_at_price":null,"inventory_quantity":1,"inventory_management":"shopify","inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/acornsci.co.nz\/cdn\/shop\/products\/4A190_1496-WEB.jpg?v=1569240740"],"featured_image":"\/\/acornsci.co.nz\/cdn\/shop\/products\/4A190_1496-WEB.jpg?v=1569240740","options":["Title"],"media":[{"alt":null,"id":1731514925155,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/4A190_1496-WEB.jpg?v=1569240740"},"aspect_ratio":1.0,"height":2000,"media_type":"image","src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/4A190_1496-WEB.jpg?v=1569240740","width":2000}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eSulphur dioxide is used as a preservative in wine and there are restrictions limiting the amount that can be added in most wine producing countries. This test kit is a fast and easy way to determine the amount of free sulfur dioxide in wine samples, without the need for the laborious setup associated with traditional methods. Additionally, unlike some other commercial products this test kit does not contain\u003cbr\u003e formaldehyde, which is a known carcinogen.\u003c\/p\u003e\n\u003cp\u003eFor this Test Kit semi-micro curvettes are required.\u003c\/p\u003e\n\u003cp\u003ePRINCIPLE OF MEASUREMENT\u003cbr\u003e The amount of  sulphite present in wine is measured by monitoring the reaction with a chromogen under acidic conditions. The reduction of the chromogen leads to formation of a strongly absorbing compound which can be measured at 340 nm.\u003c\/p\u003e\n\u003cp\u003eThe measured amount of the activated chromogen is stoichiometrically proportional to the amount of free sulphite present.\u003c\/p\u003e"}