1.1 本规范涵盖了实践中引用的工业参考材料（IRM）的化学和物理质量规范或要求，或两者兼而有之 第4678页 以及其他标准。 1.2 实践中评估和参考的IRM 第4678页 对橡胶和炭黑行业的产品、规范和开发测试至关重要。 1.3 在新批次材料被接受为IRM之前，它必须符合本规范中规定的规范。然而，这些规范只是要求的一部分。实践中给出的其他要求 第4678页 应在候选材料被正式接受为IRM之前满足。 1.4 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 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建立适当的安全、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（TBT）委员会发布的《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 3.1 IRM在橡胶和炭黑行业的产品和规范测试、研究和开发工作、技术服务工作以及质量控制操作中至关重要。 它们对于裁判来说尤其有价值。许多用于评估天然或合成橡胶的ASTM橡胶标准要求在其试验配方中使用特定的IRM，以获得更好的实验室重复性和再现性。 3.2 已被选为IRM批准候选材料的新材料批次应符合本标准中给出的适当规范，并满足实践中给出的要求 第4678页 在这些批次被接受为IRM之前。 3.3 所示的化学和物理IRM规范将确保从一个批次到下一个批次的IRM财产具有一定的一致性。然而，规范不能确保批次间的精确一致性。

1.1 This specification covers the chemical and physical quality specifications or requirements, or both, for Industry Reference Materials (IRMs) as cited in Practice D4678 and other standards. 1.2 IRMs, as evaluated and referenced in Practice D4678 , are vitally important to conduct product, specification, and development testing in the rubber and carbon black industries. 1.3 Before a new lot of material can be accepted as an IRM, it must comply with the specifications prescribed in this specification. However, these specifications are only part of the requirements. Other requirements as given in Practice D4678 shall be met before a candidate material can be formally accepted as an IRM. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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 IRMs are vitally important in product and specification testing, in research and development work, in technical service work, and in quality control operations in the rubber and carbon black industries. They are especially valuable for referee purposes. Many ASTM rubber standards for the evaluation of natural or synthetic rubber require the use of specific IRMs in their test recipes for better laboratory repeatability and reproducibility. 3.2 New material lots that have been selected as candidates for IRM approval shall conform to the appropriate specifications given in this standard and meet requirements given in Practice D4678 before the lots may be accepted as IRMs. 3.3 The chemical and physical IRM specifications shown will ensure some consistency in IRM properties from one lot to the next. However, the specifications cannot ensure exact inter-lot consistency.