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Total sulfites in the sample react with 5-5’-dithio-2-nitroben- zoic (DTNB) acid in basic medium
D-fructose and D-glucose in the sample generate NADPH (by the following reaction)
Limit of linearity: 500 mg/l
Enzymatic method for sucrose or Sucrose / D-Glucose / D-Fructose determination
Iron, reagent kit for wine Colorimetric Total sulfites in the sampleColorimetric analysis for iron determination Kit volume: 100 ml Method: Two reagent differential at 560 nm Limit of linearity: 30 mg l Limit of detection: 0. 1 mg l (ppm) Advantages Stable liquid reagent until the expiration date Ready to use dedicated reagent Liquid calibrator included in the kit Metal components in wine can originate in grapes or the machinery used to make wine. A high iron content can cause clouding due to a lack of solubilization,
