This method utilizes a "relational factoring" type of equation to determine the volume of Clorox (b) needed to give an initial concentration of disinfectant (C) in a particular volume (V) of water. The equation is based on mixing 1 fluid ounce of Clorox in 1 gallon of water which yields an initial concentration of 410 milligrams per liter. Clorox has a sodium hypochlorite (NaOCl) strength of about 5.25%.
If you know the volume of water to be treated and the desired initial concentration, then you may easily calculate the fluid ounces of Clorox required.
The desire is to achieve a concentration of 410 parts per million in 10,000 gallons using Clorox.
b equals 10,000 gallons times 410 milligrams per liter times fluid ounces
(410 milligrams per liter)(gallons)
b equals 10,000 fluid ounces
Or 10,000 fluid ounces divided by 128 fluid ounces per gallon equals 78 gallons
How many fluid ounces of Clorox must be added to 1,000 gallons of water to achieve an initial concentration of 50 milligrams per liter?
b equals 1,000 gallons times 50 milligrams per liter times fluid ounces
(410 milligrams per liter) (gallons)
b equals 122 fluid ounces
Or 122 fluid ounces divided by 32 fluid ounces per quart equals 3.8 quarts