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ASTM D2745-00(2023)

Current Reaffirmation

Standard Test Method for Relative Tinting Strength of White Pigments by Reflectance Measurements

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1.1 This test method describes the procedure for determining the relative tinting strength of white pigments by reflectance measurements of black tints.

1.2 This test method is applicable only for comparing the test pigment with a reference standard of the same type and grade.

Note 1: Test Method D332 describes a procedure for visual assessment of blue-tinted samples.

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.

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.


4.1 Tinting strength is one of the most important properties of a white pigment. This test method provides a means of testing this property for quality control.

4.2 This test method is a referee method, and the vehicle for preparing the dispersion and the black for tinting are suggested, but others may be used provided both the purchaser and the seller agree to the changes.

4.3 The results obtained with a muller do not necessarily agree with industrial situations where different dispersing conditions exist. However, dispersing with a muller is a fast, relatively inexpensive way of testing tinting strength for routine quality control.

SDO ASTM: ASTM International
Document Number D2745
Publication Date July 1, 2023
Language en - English
Page Count 3
Revision Level 00(2023)
Supercedes
Committee D01.26
Publish Date Document Id Type View
Nov. 10, 2000 D2745-93 Revision
Nov. 10, 2000 D2745-00 Revision
July 1, 2023 D2745-00R23 Reaffirmation
Feb. 1, 2017 D2745-00R17 Reaffirmation
Feb. 1, 2008 D2745-00R08 Reaffirmation