ASTM-D387 Standard Test Method for Color and Strength of Chromatic Pigments with a Mechanical Muller

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Standard Test Method for Color and Strength of Chromatic Pigments with a Mechanical Muller



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1.1 This test method is intended to be used to compare the color and strength of a pigment under test with a reference standard of the same type and grade.

1.2 This test method does not apply to white pigments.

Note 1: Test Method D3022 is similar to this test method, but it utilizes a miniature sandmill rather than a mechanical muller, to disperse the chromatic pigment.

Note 2: Test Method D332 and Test Method D2745 are similar to this test method, but they are intended for use with white pigments, rather than chromatic pigments.

1.3 The values stated in SI units are the preferred unit of measurement. 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.

Significance and Use

5.1 Color and tinting strength are the most important properties of a color pigment. This test method provides a means of testing these properties for quality control.

5.2 This test method is intended as a referee method so that such matters as the vehicle for preparing the dispersions and the white for making tints have been suggested. However, other vehicles and whites may be suitable for quality control purposes, and changes in this test method are allowed by agreement between the parties to a test.

5.3 It is assumed that the most exact comparison of mass color and tinting strength occurs when the pigment is completely dispersed. By following the procedure described in Annex A1, the conditions for achieving the maximum practical degree of dispersion with a mechanical muller may be determined. Color and strength tests should be carried out under these conditions.

5.4 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 of testing the color and strength of a pigment for routine quality control.


chromatic pigment; color; muller;; ICS Number Code 87.060.10 (Pigments and extenders)

To find similar documents by ASTM Volume:

06.01 (Paint -- Tests for Chemical, Physical, and Optical Properties; Appearance)

To find similar documents by classification:

87.060 (Paint ingredients)

87.060.10 (Pigments and extenders)

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Document Number


Revision Level

2000 R17 EDITION



Modification Type


Publication Date

March 15, 2017

Document Type

Test Method

Page Count

5 pages

Committee Number