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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.
5.2 This test method is suitable for the determination of density of paint and related products and components when in liquid form. It is particularly applicable when the fluid has too high a viscosity or when a component is too volatile for a density balance determination.
5.3 This test method provides for the maximum accuracy required for hiding power determinations. It is equally suitable for work in which less accuracy is required, by ignoring the directions for recalibration and consideration of temperature differentials, and using as the container a “weight-per-gallon” cup.
5.4 Automatic equipment for measuring density is available (see Test Method D4052) from several manufacturers. Such apparatus has been used for resins and latices as well as for oils and solvents. Before such equipment is used for a given product, results must be checked very carefully. Particularly with paints, inks, and resins, there are possibilities of gumming, fouling, and other interferences with operation.
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.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. A specific precaution statement is given in 18.104.22.168.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1193 Specification for Reagent Water
D1963 Test Method for Specific Gravity of Drying Oils, Varnishes, Resins, and Related Materials at 25/25C
D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter
E180 Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ICS Number Code 87.040 (Paints and varnishes)
UNSPSC Code 12171703(Inks)
ASTM D1475-13, Standard Test Method For Density of Liquid Coatings, Inks, and Related Products, ASTM International, West Conshohocken, PA, 2013, www.astm.orgBack to Top