1.1 该测试方法提供了实现完全隐藏所需的薄膜厚度的定量视觉测定。这种膜厚度被认为是测试涂料的隐藏能力。 1.2 该方法仅适用于喷涂涂层，但其概念也适用于其他应用方法。 1.3 以英寸-磅为单位的数值应视为标准。括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 1.4 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。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 5.1 该试验方法通过对喷涂涂层的视觉评价来确定试验涂料的遮盖力。 注1: 试验方法 D2805 描述了一种用于确定隐藏能力的仪器方法。漆膜以均匀的厚度涂布（例如用刮刀），严格测量漆膜厚度，并用光度法测定不透明度。从而以高精度确定隐藏能力。 5.2 试验方法 D6762 不如测试方法精确 D2805 ，但通常使用，因为它与涂料的应用特性更密切相关，并且在概念和评估方面更简单。

1.1 This test method provides for the quantitative visual determination of the film thickness required to achieve full hiding. This film thickness is considered to be the hiding power of a test paint. 1.2 This method applies only to spray applied coatings but its concepts are valid for other methods of application as well. 1.3 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. 1.4 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. 1.5 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 determines hiding power of a test paint by visual evaluation of a spray applied coating. Note 1: Test Method D2805 describes an instrumental method for determining hiding power. The paint film is applied at a uniform thickness (for example with a doctor blade), the film thickness is measured rigorously, and the opacity is determined photometrically. Hiding power is thereby determined with a high degree of precision. 5.2 Test Method D6762 is less precise than Test Method D2805 , but is commonly used since it is more closely related to the application characteristics of the paint and is simpler in concept and evaluation.