1.1 本试验方法是确定干洗对按钮某些物理属性的影响的一种方法。本试验方法适用于由塑料、天然材料、铸造金属、冲压金属和电镀塑料制成的按钮。 1.1.1 由塑料和天然材料制成的纽扣的观察属性包括:颜色变化、颜色转移、溶解性、溶胀和光洁度损失。 1.1.2 观察到的金属按钮和电镀按钮的属性包括:变色、氧化和颜色转移。 1.2 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。 1.3 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====== 5.1 该试验方法有助于确定所列特性的变化（参见 1.1.1 和 1.1.2 )以及这些变化是否符合预期用途。该测试可用于按钮商业装运的验收测试。 5.2 如果两个（或更多）实验室的报告测试结果之间存在实际意义上的差异，则应进行比较测试，以确定它们之间是否存在统计偏差。至少，应使用尽可能均匀的测试样品，从获得不同测试结果的材料中提取，并以相同数量随机分配给每个实验室进行测试。应使用未配对数据的统计测试，在测试系列之前选择的概率水平上比较两个实验室的测试结果。 如果发现偏差，必须找到并纠正其原因，或者考虑到已知偏差，必须调整该材料的未来测试结果。

1.1 This test method is a means of determining the effect of drycleaning on certain physical attributes of buttons. The test method applies to buttons made from plastics, natural materials, cast metal, stamped metal, and electroplated plastic. 1.1.1 The observed attributes of buttons made from plastic and natural materials include: color change, color transfer, solubility, swelling, and loss of finish. 1.1.2 The observed attributes of buttons made of metal and electroplated buttons include: color change, oxidation, and color transfer. 1.2 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. 1.3 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 ====== 5.1 This test method is useful for determining the change to the listed properties (see 1.1.1 and 1.1.2 ) and if the changes are acceptable for the intended use. This test may be used for acceptance testing of commercial shipments of buttons. 5.2 If there are differences of practical significance between the reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them. As a minimum, test samples should be used that are as homogeneous as possible, that are drawn from the material from which the disparate test results were obtained, and that are randomly assigned in equal numbers to each laboratory for testing. The test results for the two laboratories should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series. If a bias is found, either its cause must be found and corrected, or future test results for that material must be adjusted in consideration of the known bias.