CPC Main Group
G01N 9/00 Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
9 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 9/10 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 9/30 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 (methods of measurement in general G01N9/02 - G01N9/32)