ASTM D2805-11
Standard Test Method for Hiding Power of Paints by Reflectometry

Standard No.

ASTM D2805-11

Release Date

2011

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D2805-11(2018)

Latest

ASTM D2805-11(2023)

Scope

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.

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.

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 and health practices and determine the applicability of regulatory limitations prior to use.

ASTM D2805-11 Referenced Document

• ASTM D1475 Standard Test Method For Density of Liquid Coatings, Inks, and Related Products
• ASTM D344 Standard Test Method for Relative Hiding Power of Paints by the Visual Evaluation of Brushouts
• ASTM D3924 Standard Specification for Standard Environment for Conditioning and Testing Paint, Varnish, Lacquer, and Related Materials
• ASTM E1247 Standard Test Method for Identifying Fluorescence in Object-Color Specimens by Spectrophotometry
• ASTM E1331 Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry
• ASTM E1347 Standard Test Method for Color and Color-Difference Measurement by Tristimulus (Filter) Colorimetry
• ASTM E1349 Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Bidirectional Geometry
• ASTM E284 Standard Terminology of Appearance

ASTM D2805-11 history

• 2023 ASTM D2805-11(2023) Standard Test Method for Hiding Power of Paints by Reflectometry
• 2018 ASTM D2805-11(2018) Standard Test Method for Hiding Power of Paints by Reflectometry
• 2011 ASTM D2805-11 Standard Test Method for Hiding Power of Paints by Reflectometry
• 1996 ASTM D2805-96a(2003) Standard Test Method for Hiding Power of Paints by Reflectometry
• 1996 ASTM D2805-96a Standard Test Method for Hiding Power of Paints by Reflectometry