Chlorine Pump Calculator

Operating values

Chlorine dosing inputs

Adjust any value. The result updates instantly.

LIVE INPUTS

Plant throughput

m³/hr

Quick selection · m³/hr

Target chlorine residual

mg/L

Quick selection · mg/L

Hypo strength

Mn pump flow

L/hr

Mn pump flow held at entered rate1.20 L/hr

Calculated output

Contact pump requirement

Rounded to the nearest 5 mL/hr, as in your original calculator.

Calculated

Contact pump flow rate

–mL/hr

Live calculation based on your inputs

Exact calculated flow

–mL/hr

Mn contribution

–mg/L

Enter operating values above.

Calculation model: contact pump rate = (target × flow ÷ (strength × 10) − Mn pump flow) × 1,000. This assumes residual is equivalent to delivered dose and both pumps use the entered hypochlorite strength. It does not account for chlorine demand or pump calibration.

Optional tool

Estimate hypo strength

Uses current plant flow plus a CL17 reading

Actual contact pump flow

mL/hr

CL17 residual reading

mg/L

Estimated hypo strength

–%

Enter a measured contact pump flow and CL17 reading to estimate strength.

The estimator uses the original formula and assumes the CL17 residual equals chlorine delivered by both pumps. It does not measure actual hypochlorite strength or account for chlorine demand.

Chlorine Pump Calculator · v5.0Checking connection…