IPC Subgroup
G01N 9/28 by measuring the blowing pressure of gas bubbles escaping from nozzles at different depths in a liquid
Introduced: September 1968
Last revised: January 2006
Full Title
Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity > by measuring pressure differences > by measuring the blowing pressure of gas bubbles escaping from nozzles at different depths in a liquid
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES