Meaning and Purpose
4.1 Paint is often stained, especially near doorways, Windows, and work and play areas. These test methods cover the determination of the relative resistance of different paints to erosion upon repeated scrubbing during the life of the paint.

4.2 Test Method D4213 is a similar scrubbing resistance test that uses weight-loss techniques and reports volumetric film erosion rates.

4.3 Test Method A measures scrubbing resistance through the traditional cyclic failure concept. Poor correlation in the scrubbing test can be attributed to variations in bristle stiffness, washability tester condition, application, and drying conditions. Test method B has been developed to improve reproducibility.

ASTM D 2486-2017 “Scrubbing Resistance of Wall Finishes”

Scope of
1.1 These test methods cover procedures for determining the resistance of wall coatings to scrubbing induced erosion, herein referred to as “scrubbing resistance”.

1.2 Covers the following two test methods:

1.2.1 Test method A — Failure periods obtained on test coatings.

1.2.2 Test Method B — The ratio expressed as a percentage of the cycles obtained with the test coating and the cycles obtained with the known reference coating in simultaneous operation to the failure period.

1.3 Values expressed in SI units shall be regarded as standards. The values given in parentheses are for reference only.

1.4 This standard is not intended to address all safety issues, if any, 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 has been developed in accordance with the internationally recognized standardization principles established in the Decision on Principles for the Development of International Standards, Guidelines and Recommendations issued by the Committee on Technical Barriers to Trade of the World Trade Organization.