ASTM D1475-13 (R2020) pdf free download.Standard Test Method for Density of Liquid Coatings, Inks, and Related Products.
1.1 This test method covers the measurement of density of paints, inks, varnishes, lacquers. and components thereof, other than pigments, when in fluid form.
1 .2 For higher precision when working with nonpigmented materials (drying oils, varnishes, resins and related materials), Test Method D1963 can be used to determine specific gravity and, thence, density.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1 .3. 1 Exception—The values for density are to be stated in inch-pound units.
3. Terminology
3.1 Definitions:
3. 1 . 1 densit n—the mass of a unit volume of a material at a specified temperature. In this method, it is expressed as the weight in grams per millilitre, or as the weight in pounds avoirdupois of one U. S. gallon. of the liquid at the specified temperature: in the absence of other temperature specification,25°C is assumed.
3. 1 .2 specific givvTh (relative density), is—the ratio of the mass of a unit volume of a material at a stated temperature to the mass of the same volume of distilled water at the same temperature.
4. Summary of Test NIethod
4.1 The accurately known absolute density of distilled water at various temperatures (Table 1) is used to calibrate the volume of a container. The weight of the paint liquid contents of the same container at the standard temperature (25°C) or at an agreed-upon temperature is then determined and density of the contents calculated in terms of grams per millilitre. or pounds per gallon at the specified tempcrature.
5. Significance and Use
5.1 Density is weight per unit volume. It is a key property in the identification, characterization, and quality control of a wide range of materials. Density measurements in terms of weight per gallon are commonly used to check paint quality. If the density is not within specification. there is a good chance that there was a mischarge or other serious problem.ASTM D1475 pdf download.