I told my boss I had to go home early tonight to make some vitamin C indicator. She said that was fine.
1. Mix 1 tablespoon of cornstach into enough water to make paste.
2. To this paste, add 250 milliliters of water and boil for 5 minutes.
3. Add 10 drops of the starch solution to 75 milliliters of water (use an eyedropper).
4. Add enough iodine to produce a dark purple-blue color. Now your indicator solution is ready.