IPC Main Group
G01N 7/00 Analysing materials by measuring the pressure or volume of a gas or vapour
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
Related Keywords
ATMOMETERS
3 direct subcodes
Child Classifications
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- G01N 7/02 by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder
- G01N 7/1 by allowing diffusion of components through a porous wall and measuring a pressure or volume difference
- G01N 7/14 by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference