ISO 787-23:1979
General methods of test for pigments and extenders; part 23: determination of density (using a centrifuge to remove entrained air)
- Standard No.
- ISO 787-23:1979
- Release Date
- 1979
- Published By
- International Organization for Standardization (ISO)
- Latest
- ISO 787-23:1979
- Scope
- Displacement liquids of known density should be selected in which the material to be tested is insoluble, and which has good wetting properties and a low evaporation rate under vacuum. High-boiling aromatic or aliphatic hydrocarbons are suitable. The temperature, t, at which the determination is carried out affects the density of the displacement liquid; each weighing should be made at a constant temperature. The principle consists in weighing into a tared tube a quantity of a dried sample, wetting it with displacement liquid, centrifuging until the occluded air is removed and calculation of the density from the difference of masses.
ISO 787-23:1979 history
- 1979 ISO 787-23:1979 General methods of test for pigments and extenders; part 23: determination of density (using a centrifuge to remove entrained air)
