意义和目的
4.1 室内建筑涂料在使用过程中可能会沾上污垢或其他污渍. The test method provides a way to assess the relative ease of soil or stain removal on paint films using household generic materials. The test method includes a method to evaluate the washability and appearance changes of the film. 所以, the formulation designer can evaluate the influence of the composition on the wash resistance of the paint. Users can also compare how easily the different paints tested remove dirt, which is recommended to be done simultaneously.

美国材料试验协会D 4828-94-2020 有机涂料的实用耐洗性

范围
1.1 These test methods include determining the relative ease of removing common dirt and stains from internal coatings by manual or mechanical washing with sponges and liquid or powder cleaners.

1.2 以 SI 单位表示的值应被视为标准. 括号内的数值仅供参考.

1.3 本标准并非旨在解决所有安全问题, 如果有的话, 与其使用相关. 本标准的使用者有责任建立适当的安全机制, 健康和环境实践，并在使用前确定监管限制的适用性.

1.4 本国际标准是根据《关于制定国际标准的原则的决定》中确立的国际公认的标准化原则制定的, 世界贸易组织贸易技术壁垒委员会发布的指南和建议.