1.1 本规程涵盖了在各种采样条件下采集样品的程序，并指导用户使用该采样条件下的适当ASTM标准。将样品压碎，并根据惯例进一步制备以供分析 D2013/D2013M . 然而，本规程中给出了在任何破碎之前分割大样本的程序。 1.2 本规程描述了煤炭的通用和专用取样程序 (1) 按制备的大小和条件（例如，机械净化煤或原煤）和 (2) 通过采样特征。 1.3 单位- 以国际单位制或非国际单位制表示的数值应单独视为标准值。每个系统中规定的值不一定是精确的等价物；因此，为确保符合本标准，每个系统应独立使用，且两个系统的值不得组合。 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 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 本规程旨在提供代表所采集煤炭的样本。由于煤炭的可变性和采样设备的多样性，从系统规范和设备采购到设备验收测试以及实际采集最终样本，在采样的所有阶段都应谨慎。 5.2 经过进一步处理（实践 D2013/D2013M )，可以分析样本的许多不同参数。这些参数可能会影响地块的价值、其满足规范的能力、其环境影响以及其他属性。

1.1 This practice covers procedures for the collection of a sample under various conditions of sampling and directs the user to the appropriate ASTM standard for that sampling condition. The sample is to be crushed and further prepared for analysis in accordance with Practice D2013/D2013M . However, the procedures for dividing large samples before any crushing are given in this practice. 1.2 This practice describes general and special purpose sampling procedures for coals (1) by size and condition of preparation (for example, mechanically cleaned coal or raw coal) and (2) by sampling characteristics. 1.3 Units— The values stated in either SI units or non-SI units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 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 It is intended that this practice be used to provide a sample representative of the coal from which it is collected. Because of the variability of coal and the wide variety of sampling equipment, caution should be used in all stages of sampling, from system specifications and equipment procurement to equipment acceptance testing and actually taking the final sample. 5.2 After further processing (Practice D2013/D2013M ), the sample may be analyzed for a number of different parameters. These parameters may affect the lot's value, its ability to meet specifications, its environmental impact, as well as other properties.