IPC Subgroup
C02F 5/06 using calcium compounds
Introduced: January 1980
Last revised: January 2023
Full Title
Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents > Softening water by precipitation of the hardness > using calcium compounds
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- Subclass:
- TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE