IPC Subgroup
G01N 27/4 Semi-permeable membranes or partitions
Introduced: September 1968
Last revised: January 2006
Full Title
Investigating or analysing materials by the use of electric, electrochemical, or magnetic means > by investigating electrochemical variables; by using electrolysis or electrophoresis > Electrolytic cell components > Semi-permeable membranes or partitions
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES