Meaning and use
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 when repeatedly scrubbed during the life of the paint.

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

4.3 Test Method A The scrubbing resistance is measured using the traditional cycle failure concept. The poor correlation in scrubbing tests can be attributed to changes in bristle stiffness, washability tester status, application, and drying conditions. To improve reproducibility, test Method B has been developed.

ASTM D2486-2017 Standard Test Method for Scrubbing Resistance of Wall Coatings

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

1.2 Covers the following two test methods:

1.2.1 Test Method A – Failure period obtained on test coatings.

1.2.2 Test Method B – Ratio expressed as a percentage of the period obtained with the test coating and the period and failure period obtained while running with a known reference coating.

1.3 Values expressed in SI units shall be considered standard. The values given in parentheses are for reference only.

1.4 This standard is not intended to address all safety concerns, 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 is based on 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.