Chemical Dosing Calculator
Calculate the required chemical feed rate from target dose and plant flow — for coagulants, chlorine, fluoride, pH adjustment, and more.
Required feed rate
Formulas
US units: feed (lb/day) = dose (mg/L) × flow (MGD) × 8.34 ÷ purity
SI units: feed (kg/day) = dose (mg/L) × flow (m³/day) ÷ 1000 ÷ purity
8.34 lb/gal is the weight of water; the formulas assume the chemical is fed as 100% active unless purity is entered.
US units: feed (lb/day) = dose (mg/L) × flow (MGD) × 8.34 ÷ purity
SI units: feed (kg/day) = dose (mg/L) × flow (m³/day) ÷ 1000 ÷ purity
8.34 lb/gal is the weight of water; the formulas assume the chemical is fed as 100% active unless purity is entered.
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