Ascorbic Acid Test Kit Cat. No. HI 3850

Ascorbic acid ( C6H8O6) undergoes an oxidation reaction with potassium iodate in acidic condition. The endpoint is indicated by the reaction of iodine with starch suspension, which produces a blue-black product. As long as ascorbic acid is present, the triiodide is quickly converted to iodide ion, and no blue-black iodine-starch product is observed. However, when all the ascorbic acid has been oxidized, the excess triiodide ( in equilibrium with iodine) reacts with starch to form the expected blue-black color. HI 3850 test kit comes with 100 mL ascorbic acid reagent A, 25 mL starch indicator, 100 mL ascorbic acid reagent C, 50 mL calibrated plastic vessels ( 2) , 3 mL plastic pipette, 1 mL plastic pipette ( 2) and graduated plastic test tube with cap.