1.1 这些标准试验方法包括三个确定涂层粉末密度的程序，如下所示: 1.2 用于测试涂层粉末（不包括金属）的测试方法A是一种使用现成实验室设备（例如，分析天平、容量瓶等）的方法。 1.3 试验方法B要求使用比重瓶。 1.4 试验方法C是一种基于配方成分及其数量和密度计算粉末密度的方法。 1.5 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 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。 1.7 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《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====== 4.1 试验方法A是一种直接方法，使用现成的实验室设备和玻璃器皿。试验方法A只能用于不含金属颜料的粉末。 4.2 测试方法B以更高的成本提供了更好的精度，并包括金属，尽管不同的模型对三个测试样本中的每个样本产生了不同的总平均值。 4.3 当配方已知且每种原料的密度可用时，可使用试验方法C。

1.1 These standard test methods cover three procedures for determining the density of coating powders, as follows: 1.2 Test Method A, for testing coating powders, excluding metallics, is a method that uses readily available laboratory equipment (for example, analytical balance, volumetric flask, etc.). 1.3 Test Method B requires the use of a pycnometer. 1.4 Test Method C is a method that calculates the density of a powder based upon the formula ingredients and their amounts and densities. 1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.6 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. 1.7 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 Test Method A is a straight-forward method using readily available laboratory equipment and glassware. Test Method A may only be used with powder that does not contain metallic pigments. 4.2 Test Method B provides better precision at higher cost and includes metallics, although different models produced different grand averages for each of the three samples tested. 4.3 Test Method C may be used when the formulation is known, and the density of each raw material is available.