These are moderate oral doses. You may also give twice as many doses, with half as much "C" per dose. Injections of C may be arranged with your physician. Vitamin C may be given as liquid, powder, tablet or chewable tablet. Infants often prefer finely powdered, naturally sweetened chewable tablets, which may be crushed between two spoons.
The first option for testing uses a liquid chemcial OTO (othotolidine) that causes a color change to yellow in the presence of total chlorine. You simply fill a tube with water, add 1-5 drops of the solution, and look for the color change. These kits are sold in many stores as a way to test the concentration of total chlorine in swimming pool ...