1.1 本试验方法包括一个实验室程序，用于确定密封剂样品在与砌体、混凝土或石头（大理石、石灰石、砂岩、花岗岩等）接触时是否会导致基底染色。 1.2 以SI（公制）单位表示的值应视为标准值。括号中给出的值仅供参考。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 注1: 目前没有类似于此测试方法的ISO标准。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 4.1 建筑物上的污渍是一种美学上不可取的现象。该试验方法评估密封剂在多孔基材上造成早期污渍的可能性，如果污渍是由密封剂的大量渗出引起的。该测试方法不能预测其他因素引起的染色。 4.2 另请参见测试方法 第510页 .

1.1 This test method covers a laboratory procedure for determining whether a sample of sealant will cause staining of the substrate when in the contact with masonry, concrete, or stone (marble, limestone, sandstone, granite, etc.). 1.2 The values stated in SI (metric) units are to be regarded as the standard. The values given in parentheses are provided for information only. 1.3 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. Note 1: Currently there is no ISO standard similar to this test method. 1.4 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. ====== Significance And Use ====== 4.1 Staining of a building is an aesthetically undesirable occurrence. This test method evaluates the likelihood of a sealant causing an early stain on a porous substrate, when the stain is caused by gross exudation from the sealant. This test method does not predict staining caused by other factors. 4.2 See also Test Method C510 .