1.1 本试验方法涵盖了一个程序，用于确定瓷砖和玻璃砖是否以及在何种程度上受到长期暴露于家庭中常用的化学物质或用于清洁目的的化学物质以及其他更恶劣条件的影响。 1.2 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.2.1 本标准中用于浓度的单位为v/v，表示试剂体积/1 L溶液，以及g/L，表示试剂重量（g），溶解于1 L水中。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 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《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 3.1 本试验方法旨在测试食品柜台、盥洗室和类似住宅、医疗和商业设施中可能接触食品、化学品和废物的瓷砖，以及可能接触强力清洁剂的区域中的瓷砖。

1.1 This test method covers a procedure for determining whether, and to what degree, ceramic tiles and glass tiles are affected by prolonged exposure to chemical substances that are commonly used in the household or for cleaning purposes as well as other more severe conditions. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.2.1 The units used for concentration in this standard are v/v, which refers to the volume of reagent/1 L of solution, and g/L, which refers to the weight of reagent, in g, to be dissolved in 1 L of water. 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. 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 ====== 3.1 This test method is intended for testing tiles that are to be used for food counters, lavatories, and similar residential, medical, and commercial installations, where they may come in contact with food, chemical, and waste substances and for tile in areas where they may be exposed to contact with strong cleaning agents.