1.1 该测试方法旨在提供一个数字评级系统，用于根据知识丰富的用户所感知的情况，在弹性地板的不同磨损寿命阶段对其进行分类。 1.2 该试验方法旨在比较两个或多个样品或样品组之间的视觉外观差异。 1.3 该方法提供了推荐的观看条件和照明，以评定样本或样本组之间的视觉差异。 1.4 该方法可用于评估某些特定测试条件暴露前后的视觉外观变化，例如，由于足部交通导致的服务磨损，或可能发生外观变化的其他测试。 1.5 以英寸-磅单位表示的值应视为标准值。括号中给出的值是对SI单位的数学转换，仅供参考，不被视为标准值。 1.6 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境健康实践，并确定监管限制的适用性。 1.7 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 评级是根据样本与参考标准或与对照样本进行比较时的一些主观或比较评估标准，或两者兼而有之。这些参数通常包括光泽、颜色、表面纹理的变化、图案的变化以及正常维护程序（包括使用饰面或抛光）下外观的可恢复性。 根据规定的程序，在指定的照明条件下，由合格的个人或最好由合格的观察员小组进行评级。

1.1 This test method is intended to provide a numerical rating system for classification of resilient floors during the various stages of their wear life in relation to their condition, as perceived by a knowledgeable user. 1.2 This test method is intended to allow comparison between two or more samples or groups of samples for differences in visual appearance. 1.3 This method provides recommended viewing conditions and lighting for rating visual differences between samples or groups of samples. 1.4 This method can be utilized to evaluate change in visual appearance before and after some specified test condition exposure, for example, in service wear due to foot traffic, or other tests where change in appearance might occur. 1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.6 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental health practices and determine the applicability of regulatory limitations prior to use. 1.7 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 Ratings are developed by some subjective or comparative evaluation criteria, or both, of a sample(s) to some reference criteria or when compared to a control sample. These parameters generally include change in gloss, color, surface texture, alterations to pattern and possibly restorability of appearance with normal maintenance procedures, including the use of finishes or buffing. Rating is done by a qualified individual or preferably by a panel of qualified observers under specified lighting conditions in accordance with prescribed procedures.