Hanna Ascorbic Acid Test Kit - HI3850

HI3850 Ascorbic Acid Test Kit by Hanna Instruments

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.

Order Information:

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.