This standard provides a test method for determining the abrasion resistance of wall finish coatings under repeated scrubbing conditions. The test covers two methods: Method A measures scrub resistance through the traditional failure period, and Method B improves reproducibility by comparison with known reference coatings. Scrub resistance is an important indicator for evaluating the durability and performance of coatings in practical applications. SI units are standard units, and the values in parentheses are for reference only. It is up to the user to determine the applicable safety measures.