標準號：ISO 787-23-1979
中文標準名稱：顏料和體質顏料的通用試驗方法.第23部分:密度測定(用離心機消除夾帶的空氣)
英文標準名稱：General methods of test for pigments and extenders; part 23: determination of density (using a centrifuge to remove entrained air)
標準類型：G53
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：G53
國際標準分類號：87.060.10
適用范圍：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.