Oxidizer
An oxidizer is a chemical that destroys organic contaminants in pool water through oxidation, without necessarily adding sanitiser residual.
Definition
An oxidizer is a chemical that destroys organic contaminants in pool water through oxidation, without necessarily adding sanitiser residual.
Typical Values: MPS (non-chlorine shock): follow product label dosing
In Plain Language
Potassium monopersulfate (MPS, non-chlorine shock) is a common pool oxidizer. It destroys organic compounds like body oils, sweat, and chloramine precursors without raising free chlorine. Chlorine itself is both a sanitizer and an oxidizer. Oxidizers are used in hot tubs after each soak session to destroy organic load and in pools to supplement weekly shock treatment.
Why It Matters
Regular oxidation prevents organic accumulation that would otherwise deplete chlorine and contribute to chloramine formation.
Typical Values
MPS (non-chlorine shock): follow product label dosing
Last reviewed: 2026-06-01