ASTM D5068-04(2025)

1.1 This practice describes the preparation of paint brushes for evaluation.

1.2 This practice is applicable to paint brushes 50 mm to 100 mm (2 in. to 4 in.) in width.

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 Until the paint brush is fully conditioned and wetted with paint, only part of the paint loaded onto the brush can be transferred to the surface being painted. By properly preparing the brush before use, the amount of paint delivered to the surface can be made more uniform and reflect real use.