1.1 本规程描述了规划、实施和分析实验室间研究（ILS）结果的技术，目的是制定测试方法的精度声明。它旨在与实践结合使用 C670 . 本标准中使用的方法与实践中的方法一致 E691 . 1.2 本规程不适用于旨在开发测试方法或评估两种或两种以上测试方法的相对可变性的项目。参考实践 C1067 用于评估测试方法耐用性的程序。 1.3 尚未指定该实践的单位制。实践中的尺寸量仅在计算示例中给出。 1.4 本标准无意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和健康实践，并确定监管限制的适用性。 ====意义和用途====== 4.1 本规程规定了规划和进行实验室间研究的要求，以获得数据，从而为试验方法制定单操作员和多实验室精度声明。它包括在进行计算以制定精度声明之前评估数据一致性的方法。这些程序与实际相符 E691 . 4.2 从本实践中获得的ILS数据旨在确定写入单精度数据的精度值- 符合实践的操作员和多实验室精度声明 C670 . 4.3 附录X1 提供了一个示例来说明从ILS数据中获得测试方法精度值的计算。这可用于检查用户开发的用于执行计算的电子表格。 4.4 附录X2 讨论了试验方法的实验室间研究所需的额外计算，其中包括制作试样作为程序的一部分。在这种情况下，需要考虑批次间的可变性。 4.5 附录X3 讨论了使用方差分析作为从ILS数据中获取精度值的替代方法。

1.1 This practice describes techniques for planning, conducting, and analyzing the results of an interlaboratory study (ILS) with the objective of developing the precision statement of a test method. It is designed to be used in conjunction with Practice C670 . The methods used in this standard are consistent with those in Practice E691 . 1.2 This practice is not intended for use in programs whose purpose is to develop a test method or to assess the relative variability of two or more test methods. Refer to Practice C1067 for procedures to evaluate the ruggedness of a test method. 1.3 The system of units for this practice has not been specified. Dimensional quantities in the practice are presented only in examples of calculations. 1.4 This standard does not purport to address all safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== 4.1 This practice provides requirements for planning and conducting an interlaboratory study to obtain data to develop single-operator and multilaboratory precision statements for a test method. It includes methods to evaluate data consistency before carrying out the calculations to develop the precision statement. The procedures are compatible with those in Practice E691 . 4.2 The ILS data obtained from this practice are intended for developing the precision values for writing single-operator and multilaboratory precision statements in accordance with Practice C670 . 4.3 Appendix X1 provides an example to illustrate the calculations to obtain the precision values of the test method from the ILS data. This may be used to check a user-developed electronic spreadsheet for carrying out the calculations. 4.4 Appendix X2 discusses the additional calculations required for an interlaboratory study of a test method that includes making test specimens as part of the procedure. In this case, batch-to-batch variability needs to be considered. 4.5 Appendix X3 discusses the use of analysis of variance as an alternative approach to obtain the precision values from the ILS data.