Standard Historical Last Updated: Aug 03, 2023 Track Document
ASTM D2805-11(2018)

Standard Test Method for Hiding Power of Paints by Reflectometry

Standard Test Method for Hiding Power of Paints by Reflectometry D2805-11R18 ASTM|D2805-11R18|en-US Standard Test Method for Hiding Power of Paints by Reflectometry Standard new BOS Vol. 06.01 Committee D01
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Significance and Use

5.1 This is a precise instrumental method giving results having an absolute physical significance without reference to a comparison paint. It should be used when maximum precision and minimum subjectivity are required, as in testing specification coatings or evaluating the hiding efficiency of pigments.

5.2 Hiding power Test Method D344 is visual instead of instrumental, and gives results that are relative to a material standard instead of absolute. It is less precise than Test Method D2805 but more closely aligned with practical painting procedures.

Scope

1.1 This test method covers the determination, without reference to a material paint standard, of the hiding power of air dry coatings with Y tristimulus values greater than 15 %. With appropriate modification, it can also be used to test baking finishes.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 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.

1.4 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.

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Details
Book of Standards Volume: 06.01
Developed by Subcommittee: D01.26
Pages: 6
DOI: 10.1520/D2805-11R18
ICS Code: 87.040