ASTM D5007-99-2017 “Standard Test Method for Changes in Wet-Dry Covering Power”

Meaning and use
5.1 Many architectural paints, especially white and light paints, change significantly in film opacity as they dry. Increased coverage is sometimes associated with porosity and poor film integrity in conventional formulations. The reduction can lead to disappointing paint jobs. Therefore, the change in covering power from wet to dry is a property of great practical significance.

5.2 This test method can be used for paint specifications and as a brief procedure for assessment and quality control.

ASTM D5007-99-2017 “Standard Test Method for Changes in Wet-Dry Covering Power”

1.1 This test method includes a visual assessment of wet and dry film to determine changes in the covering power of architectural coatings during drying.

1.2 This test method is not recommended for colors other than white and light colors.

1.3 The value in SI units shall prevail. The values given in parentheses are for reference only.

1.4 This standard is not intended to address all, if any, safety concerns associated with its use. It is the responsibility of users of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory restrictions prior to use.

1.5 This international standard is based on the internationally recognized standardization principles established in the Decision on Principles for the Development of International Standards, Guidelines and Recommendations issued by the WTO Committee on Technical Barriers to Trade (TBT).

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