1.1 这个 ASTM标准的形式和样式 要求所有测试方法都包含关于精度和偏差的说明。此外，精度声明需要包含单个操作员精度（重复性）声明和多实验室精度（再现性）声明。本规程为编制符合这些要求的精度和偏差声明提供了指导。还讨论了精度和偏差声明对测试方法使用者的目的和意义。符合本规范的精度说明示例包括在 附录X1 .本规程是对《规程》的补充 E177 并且已经被开发以满足ASTM委员会处理建筑材料的需求。 注1: 尽管这一做法由C09委员会管辖，但目前的版本是由C01和C09委员会联合制定的，随后被其他处理建筑材料的委员会采用。 1.2 本规程假设实验室间研究（ILS）已按照规程完成 C802 或实践 E691 .实验室间研究提供了必要的统计值，以编写精度和偏差声明。 1.3 没有具体说明这种做法的单位制。实践中的尺寸仅在精度和偏差陈述的示例中给出。 1.4 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。 1.5 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。

1.1 The Form and Style for ASTM Standards requires that all test methods contain statements on precision and bias. Further, the precision statement is required to contain a statement on single-operator precision (repeatability) and a statement on multilaboratory precision (reproducibility). This practice provides guidance for preparing precision and bias statements that comply with these requirements. Discussion of the purpose and significance of precision and bias statements for users of test methods is also provided. Examples of precision statements that conform to this practice are included in Appendix X1 . This practice supplements Practice E177 and has been developed to meet the needs of ASTM Committees dealing with construction materials. Note 1: Although this practice is under the jurisdiction of Committee C09, the current version was developed jointly by Committees C01 and C09 and has subsequently been adopted for use by other committees dealing with construction materials. 1.2 This practice assumes that an interlaboratory study (ILS) has been completed in accordance with Practice C802 or Practice E691 . The interlaboratory study provides the necessary statistical values to write the precision and bias statements. 1.3 The system of units for this practice is not specified. Dimensional quantities in the practice are presented only in examples of precision and bias statements. 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.