ASTM D1475 test is used for measuring the Density of Liquid Coatings, Inks, and Related Products. This test is useful for high viscosity fluid products. Industries concerned with paints, varnishes, inks, lacquers, and constituents other than pigments in fluid form use this test method.
ASTM D1475 test is used for measuring the density of paints, varnishes, inks, lacquers, and constituents other than pigments in fluid form. It is especially useful when the fluid is too volatile or has high viscosity for a density balance determination. ASTM D1475 is applicable for testing products where maximum accuracy is necessary. Sometimes it is also used for tasks where less accuracy is needed.
For ASTM D1475, distilled water in accurate quantity having an absolute density at different temperatures is used to calibrate the volume of a vessel or container. Then, the weight of liquid paint or other pigments contents of the container at a fixed temperature or at the agreed temperature is determined. Finally, the density of the contents is calculated as grams per liter or pounds per gallon at the specified temperature.
The sample size is used as specified by ASTM D1475.
The container volume is calculated as follows:
V = volume of the container, mL,
M = weight of the dry container, g,
N = weight of container and water, g and
ρ = absolute density of water at the specified temperature, g/mL
Density in grams per milliliter is calculated as follows:
Dm= density, g/mL,
Density in pounds per gallon is calculated as follows: