Chemical Injection Dosing Rate Calculator

Calculate the required metering pump flow rate (GPH) for your chemical dosing application. Enter carrier flow, target dose concentration, and chemical solution strength — the calculator returns the required feed rate and recommended BBP pump series.

Carrier / Process Flow Rate

Flow rate of the stream being dosed (raw water, process stream, pipeline).

Target Dose Rate

mg/L

Target dose concentration in the treated stream. Typical: Cl₂ 0.5–5 mg/L, polymer 1–10 mg/L.

Chemical Solution Strength

% w/w

Chemical solution concentration. NaOCl 12.5%, H₂SO₄ 96%, NaOH 50%, polymer 0.1–1%.

Enter all three values — carrier flow, dose rate, and chemical concentration — to calculate.

Required Metering Pump Feed Rate

0.00 GPH

0GPD (gal/day)