IPC Main Group
G01N 9/00 Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
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
Scope Notes
Glossary: density mass per unit volume specific gravity density of a substance divided by the density of water (since the latter is 1 gr/cm3, specific gravity is the same number as density but without any units)
Related Keywords
AEROMETERSdetermining ALCOHOL(S) content in fluidsinvestigating CONSISTENCY of materialinvestigating DENSITYGRAVIMETRIC[-apparatus]investigating specific GRAVITY
8 direct subcodes
Child Classifications
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- G01N 9/02 by measuring weight of a known volume
- G01N 9/08 by measuring buoyant force of solid materials by weighing both in air and in a liquid
- G01N 9/1 by observing bodies wholly or partially immersed in fluid materials
- G01N 9/24 by observing the transmission of wave or particle radiation through the material
- G01N 9/26 by measuring pressure differences
- G01N 9/3 by using centrifugal effects
- G01N 9/32 by using flow properties of fluids, e.g. flow through tubes or apertures
- G01N 9/36 Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture