How Much Soda Ash (Sodium Carbonate) to Raise pH?

Soda ash (sodium carbonate) can be used for pH adjustment, but the amount depends on raw pH, target pH, flow, product purity, alkalinity, temperature, and site conditions. Use the soda ash dosing calculator to create a starting estimate, then validate it with calibrated equipment and site procedures.

Direct answer

There is no single dose for every water source. Using this calculator's example inputs—raw pH 6.2, target pH 7.8, and 99% soda ash—the model returns 28.2 mg/L, 0.235 lb per 1,000 gal, and 0.0282 kg per m³. This is a starting estimate, not an operational instruction.

The guide explains the formula, unit conversions, and checks that should be completed before applying an estimate.

Open the soda ash dosing calculator to enter your own values.