Vitamin C Reagent, 1 tab for sale. Buy from The Science Company.

Vitamin "C" Reagent (Dichlorophenolindophenol) is an indicator for semi-quantitative determination of vitamin C. Provided as one tablet in a dropper bottle. Just add 30ml of distilled water to make enough indicator solution for many tests.

Instructions for use:

1. Add 30 mL of distilled water into provided dropper bottle containing one (1) Vitamin C tablet.
2. Agitate gently to dissolve.
3. Solution is stable for 6 months.
4. Record expiration date on bottle label.
5. Store at 35 to 45°F (2-8° C)

Testing foods for Vitamin C... Click Here to see these instructions with pictures.

Vitamin C Reagent indicator solution is blue. A colorless end point will be reached when this indicator is added to a solution containing vitamin C.

1. First, prepare test solution by grinding vitamin C reagent tablet into a powder using a mortar and pestle or back of a spoon. Pour powder into dropper bottle and add 30ml (1 oz.) of distilled water.
2. If testing more than one liquid, label each test tube with a marker. Fill each with 50 drops of blue vitamin C indicator solution.
3. Now add juice one drop at a time to the indicator solution in the test tube.
4. Count drops until dark blue color turns clear. This is your end point.
5. Compare different juices. Those that require more drops to reach the clear end point are LOWER in vitamin C.