ASTM International Standard Practice for Dispersion of Chromatic Pigments with a Mechanical Muller ASTM D7540-26

1.1 This practice is intended to be used to disperse a chromatic pigment for subsequent testing. 1.2 This practice does not apply to white pigments. Note 1: The dispersion portion of Test Method D3022 is similar to this practice, but it utilizes a miniature sandmill rather than a mechanical muller, to disperse the chromatic pigment. Note 2: The dispersion portions of Test Methods D332 and D2745 are similar to this practice, but they are intended for use with white pigments, rather than chromatic pigments. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Section 8. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.