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Description of ASTM-D7540 2013ASTM D7540 - 09(2013)Standard Practice for Dispersion of Chromatic Pigments with a Mechanical MullerActive Standard ASTM D7540 | Developed by Subcommittee: D01.24 Book of Standards Volume: 06.01 ASTM D7540Significance and Use 5.1 The results obtained with a mechanical muller do not necessarily correlate directly with an industrial situation where different dispersing conditions exist. However, dispersion with a mechanical muller is a quick and inexpensive way to prepare specimens for testing the color and strength of a pigment for routine quality control. 5.2 By following the procedure described in Appendix X1 , the conditions for achieving the maximum practical degree of dispersion with a mechanical muller may be determined. Any color and strength tests done with the dispersions should be carried out under these conditions. 1. Scope 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 and health practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Section 8 .
ASTM Standards D332 Test Method for Relative Tinting Strength of White Pigments by Visual Observation D2745 Test Method for Relative Tinting Strength of White Pigments by Reflectance Measurements D3022 Test Method for Color and Strength of Color Pigments by Use of a Miniature Sandmill E284 Terminology of Appearance Keywords chromatic pigments; dispersions; mullers; ICS Code ICS Number Code 87.060.10 (Pigments and extenders) DOI: 10.1520/D7540 ASTM International is a member of CrossRef. ASTM D7540This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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