P.P.M.

Determine (P.P.M.) Of Active Disinfectant In Various Use-Dilution Ratios

multiply percentage of active disinfectant times 10,000, and divide by use-dilution rate

% active x 10,000
dilution rate

Examples:

Given active percentage if 4.5%.

1. At 1:256 (1/2 oz. per gallon)
(4.5 x 10,000) / 256 = 176
ppm active

2. At 1:128 (I oz. per gallon)
(4.5 x 10,000) / 128 = 352
ppm active