Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents

Introduced: January 1980

Last revised: January 2023

Classification Context

Section:: CHEMISTRY; METALLURGY
Class:: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Subclass:: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Related Keywords

preventing INCRUSTATION by adding agents to waterPREVENTING scale or incrustation by adding agents to waterSCALE(S) preventionadding scale preventives or sequestration agents to WATER

2 direct subcodes

Child Classifications

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C02F 5/02 Softening water by precipitation of the hardness
C02F 5/08 Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents