Reference number
ISO 787-23:1979
ISO 787-23:1979
© ISO 2026
International Standard
ISO 787-23:1979
General methods of test for pigments and extenders — Part 23: Determination of density (using a centrifuge to remove entrained air)
Edition 1
1979-12
1979-12
ISO 787-23:1979
5102
Publicado
(Edición 1, 1979)
Esta publicación se revisó y confirmó por última vez en 2023.
Por lo tanto, esta versión es la actual.
ISO 787-23:1979
ISO 787-23:1979
5102
CHF
44
Resumen
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.
Informaciones generales
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Estado: PublicadoFecha de publicación: 1979-12Etapa: Norma Internacional confirmada [90.93]
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Edición: 1Número de páginas: 2
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Comité Técnico :ISO/TC 256ICS :87.060.10
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