Infection prevention Ė Preparation of 0.5% chlorine solution
To prepare chlorine solution of a particular strength, the following formula may be used to calculate the required amount of dry powder (household bleach):
g/L = [% of dilute solution/% of concentrate of active ingredient (calcium hypochlorite) of dry powder] ◊ 1000
For example, to make 0.5% chlorine solution from a dry powder of 35% calcium hypochlorite: [0.5%/35%] ◊ 1000 = 14.2 g. Hence, 14.2 g of dry powder will be required to prepare 1 L of solution.
Materials required for preparation of 1 L of 0.5% chlorine solution:
Label: 0.5% chlorine solution prepared on dd/mm/yyyy