HSC 252 - Water Quality and Treatment

Basic units and some frequently used conversion factors: 1 part per million (ppm) = 1 gallon per million gallons (or 1 mg/l, etc.) 1 part per million (ppm) = 8.34 pounds per million gallons. 1% = 10,000 ppm. Density of water = 8.34 pounds per gallon. 1 grain per gallon (GPG) = 17.1 mg/l. 1 cubic foot of water = 7.48 gallons. 1 cubic foot of ... ................
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