1.1 本规程涵盖颗粒尺寸测量数据的报告。 1.2 本规程适用于固体、凝胶或乳液液滴的干粉和湿悬浮液的粒度测量方法、装置、详细程度和数据格式。这种做法不适用于液体颗粒。 注1: 有关报告液体颗粒测量数据的信息，请参阅实践 E799 . 1.3 此做法不涉及颗粒浓度信息。 1.4 本规程使用SI（国际系统）单位作为标准。除非特定的仪器软件报告颗粒尺寸信息，包括百分位数、指数和分布，否则应以国际单位制单位说明所有数值。在这种情况下，在最终书面报告中同时提供报告的国际单位制和等效国际单位制。参考实践 E380 以正确使用国际单位制。 1.5 本标准并不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。 1.6 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====== 3.1 在评估颗粒尺寸信息时，如果数据处理程序不可用，数据用户必须在分析不一致的情况下对报告的数据做出假设。为了比较不同的数据集，缔约方必须报告评估、计算、汇编或以其他方式处理待报告数据的分析技术和方法或程序。 3.2 为了满足用户的需求，颗粒尺寸表征信息可以报告为三个详细级别。 3.2.1 1级适用于只需要材料基本信息的情况，并且应随每次装运一起提供。该级别表示应报告的最低信息。在识别某一等级的材料或不需要分析方法的详细知识的情况下，1级信息可能就足够了。 3.2.2 第2级假设用户需要了解方法，并允许用户对第1级中提供的信息做出更明智的判断。 3.2.3 第3级提供了详细的书面程序，允许重复测量。 3.2.4 通过第2级和第3级提供的信息将允许用户在多个供应商之间进行比较材料评估，设置规格或定义采购协议- 实验室研究，最重要的是解决供应商和用户之间的纠纷。 3.3 报道的颗粒尺寸测量是实际颗粒尺寸和形状因子以及被测颗粒的特定物理或化学性质的函数。当比较不同物理或化学参数或不同粒度测量范围的仪器的数据时，需要小心。样品采集、处理和制备也会影响报告的粒度结果。

1.1 This practice covers reporting particle size measurement data. 1.2 This practice applies to particle size measurement methods, devices, detail levels, and data formats for dry powders, and wet suspensions of solids, gels, or emulsion droplets. This practice does not pertain to liquid particles. Note 1: For information on reporting liquid particle measurement data, refer to Practice E799 . 1.3 This practice does not concern particle concentration information. 1.4 This practice uses SI (Système International) units as standard. State all numerical values in terms of SI units unless specific instrumentation software reports particle size information, including percentiles, indices, and distributions as tabulations and graphs using alternate units. In this case, present both reported and equivalent SI units in the final written report. Refer to Practice E380 for proper usage of SI units. 1.5 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. 1.6 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 ====== 3.1 When evaluating the particle size information, if the procedures of the data processing are not available, the user of the data must make assumptions concerning the reported data in the event of analytical inconsistencies. In order for different data sets to be compared it is crucial that the parties report the analytical techniques and methods or procedures for evaluating, calculating, compiling or otherwise processing the data to be reported. 3.2 Particle size characterization information can be reported in three levels of detail in order to satisfy user's needs. 3.2.1 Level 1 applies when only basic information about the material is required, and shall be provided with each shipment. This level represents the minimum information that shall be reported. Level 1 information may be sufficient in such cases as identifying a certain grade of a material or when detailed knowledge of analytical methodology is not needed. 3.2.2 Level 2 presumes the need for knowledge of methodology on the user's part and allows the user to make a more informed judgment about the information provided in Level 1. 3.2.3 Level 3 provides detailed written procedures to allow duplication of the measurement. 3.2.4 Information provided through Levels 2 and 3 will allow users to perform comparative material evaluations among several suppliers, set specifications or define a purchase agreement, perform inter-laboratory studies and most importantly resolve disputes among suppliers and users. 3.3 Reported particle size measurement is a function of both the actual particle dimension and shape factor as well as the particular physical or chemical properties of the particle being measured. Caution is required when comparing data from instruments operating on different physical or chemical parameters or with different particle size measurement ranges. Sample acquisition, handling and preparation can also affect the reported particle size results.