1.1 本试验方法包括使用0.1至500μm范围内的激光散射仪器测定氧化铝或石英的粒度分布。 1.2 本试验方法中描述的程序可适用于其他非塑性陶瓷粉末。用户可自行决定该方法的适用性。 1.3 本试验方法适用于使用水分散体的分析。 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。 1.5 石英被IARC归类为I类致癌物。有关处理该材料的具体危险信息，请参阅供应商的材料安全数据表。 1.6 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 必须认识到，通过该方法或利用不同物理原理的任何其他粒度分布方法获得的结果可能不一致。结果受到每种粒度分析方法所采用的物理原理的强烈影响。任何粒度测定方法的结果只能在相对意义上使用，在比较其他方法获得的结果时，不应将其视为绝对值。 4.2 用于测定颗粒大小的光散射理论已有多年的历史。 一些测试设备制造商有基于这些原则的装置。虽然每种类型的测试设备都使用相同的光散射基本原理作为粒度的函数，但与理论应用相关的不同假设和将光测量转换为粒度的不同模型可能会导致每种仪器的不同结果。因此，使用该测试方法不能保证各种制造商仪器的直接可比结果。 4.3 氧化铝和石英的制造商和购买者将发现该方法有助于确定材料规格、制造控制和研发的粒度分布。

1.1 This test method covers the determination of particle size distribution of alumina or quartz using laser light-scattering instrumentation in the range from 0.1 to 500 μm. 1.2 The procedure described in this test method may be applied to other nonplastic ceramic powders. It is at the discretion of the user to determine the method's applicability. 1.3 This test method applies to analysis using aqueous dispersions. 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 Quartz has been classified by IARC as a Group I carcinogen. For specific hazard information in handling this material, see the supplier's Material Safety Data Sheet. 1.6 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 It is important to recognize that the results obtained by this method or any other method for particle size distribution utilizing different physical principles may disagree. The results are strongly influenced by the physical principles employed by each method of particle size analysis. The results of any particle sizing method should be used only in a relative sense, and should not be regarded as absolute when comparing results obtained by other methods. 4.2 Light scattering theory that is used for determination of particle size has been available for many years. Several manufacturers of testing equipment have units based on these principles. Although each type of testing equipment utilizes the same basic principles for light scattering as a function of particle size, different assumptions pertinent to applications of the theory and different models for converting light measurements to particle size may lead to different results for each instrument. Therefore, the use of this test method cannot guarantee directly comparable results from the various manufacturers' instruments. 4.3 Manufacturers and purchasers of alumina and quartz will find the method useful to determine particle size distributions for materials specifications, manufacturing control, and research and development.