1.1 本指南描述了ASTM石油产品和润滑剂委员会D02中使用的试验方法的实验室间研究（ILS）的规划和实施程序，目的是根据ASTM形式和风格要求估计试验方法的重复性和再现性。 1.2 本指南涉及ILS的管理，旨在为规划阶段提供指导，并确保提前识别和商定流程、物流和工具。 1.2.1 样本选择和样本选择对测试方法最终范围的影响范围和精度部分中涵盖的材料范围和精度部分中涵盖的测量范围都很重要，在启动ILS之前，需要仔细考虑这些方面。 1.3 本指南不涉及试验方法的开发，而是涉及收集试验方法精度声明所需的信息。 1.4 本指南涉及产生单个数值作为测试结果的测试方法，尽管单个数值可能是一组测量的计算结果。 1.5 本指南旨在测试稳定的性能，以便可以均匀化散装样品，并制备在ILS测试期间相同且稳定的子样品。本指南并非针对不稳定特性或难以获得在多个实验室现场进行的ILS的稳定代表性样品的特性而设计。 1.6 本指南代表了典型精度研究的建议实践。各小组委员会可根据其专业知识的指示修改该方法。 1.7 本指南是自愿的，因此，经批准的精度研究不需要本指南。 1.8 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 所有ASTM标准试验方法都需要包括精度和偏差声明。 为了获得此类数据，有必要进行实验室间研究。本文件旨在简要概述ILS中必要的步骤，并建议执行这些步骤的适当顺序。 5.1.1 定性测试，如测试方法 D130型 铜腐蚀可能不需要ILS。

1.1 This guide describes the procedures for planning and conducting an interlaboratory study (ILS) of a test method used in Petroleum Products and Lubricants Committee D02 of ASTM for the purpose of estimating repeatability and reproducibility of the test method in accordance with ASTM Form and Style requirements. 1.2 This guide is concerned with the management of the ILS and intended to provide guidance for the planning stage and ensure the process, logistics, and tools are identified and agreed upon in advance. 1.2.1 Selection of the samples and the impact of sample selection on the final scope of the test method—both the range of materials covered in the scope and precision sections and the measurement range covered in the precision section—are important, and careful consideration needs to be given to these aspects before an ILS is launched. 1.3 This guide does not concern itself with the development of test methods but rather with gathering the information needed for a test method precision statement. 1.4 This guide is concerned with test methods which yield a single numerical figure as the test result, although the single figure may be the result of a calculation from a set of measurements. 1.5 This guide is designed for tests of properties that are stable, such that bulk samples can be homogenized and sub-samples can be prepared that will be identical and stable for the duration of the ILS testing period. This guide is not designed for unstable properties or for properties that make it difficult to obtain stable, representative samples for an ILS conducted at multiple laboratory sites. 1.6 This guide represents the suggested practices for a typical precision study. Individual subcommittees may modify this approach as their expertise directs. 1.7 This guide is voluntary, and thus, is not required for an approved precision study. 1.8 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 All ASTM standard test methods are required to include statements on precision and bias. To obtain such data it is necessary to conduct an interlaboratory study. This document is designed to provide a brief overview of the steps necessary in an ILS and to suggest an appropriate sequence in carrying out these steps. 5.1.1 Qualitative tests such as Test Method D130 copper corrosion may not require an ILS.