1.1 这些试验方法包括以供应给橡胶行业的形式对固体天然橡胶进行取样和化学分析。 1.2 分析程序按以下顺序出现: 小节 取样 5. 挥发性物质 6 – 8. 污垢 9 – 13 灰 14 – 17 铜（仲裁比色法） 18 – 22 铜（替代比色法） 23 – 27 铜（替代火焰原子吸收法） 28 锰（比色法） 29 – 33 锰（替代火焰原子吸收法） 34 铁（比色法） 35 – 39 丙酮提取物 40 – 41 橡胶碳氢化合物 42 – 43 氮 44 – 45 1.3 以国际单位制表示的数值应视为标准。括号中的值仅供参考。 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====== 3.1 这些试验方法用于天然橡胶的质量控制验收，并可用于鉴定目的。

1.1 These test methods cover the sampling and chemical analysis of solid natural rubber in the forms supplied to the rubber industry. 1.2 The analytical procedures appear in the following order: Sections Sampling 5 Volatile Matter 6 – 8 Dirt 9 – 13 Ash 14 – 17 Copper (Referee Colorimetric Method) 18 – 22 Copper (Alternative Colorimetric Method) 23 – 27 Copper (Alternative Flame Atomic Absorption Method) 28 Manganese (Colorimetric Method) 29 – 33 Manganese (Alternative Flame Atomic Absorption Method) 34 Iron (Colorimetric Method) 35 – 39 Acetone Extract 40 – 41 Rubber Hydrocarbon 42 – 43 Nitrogen 44 – 45 1.3 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only. 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 ====== 3.1 These test methods are intended for quality control acceptance of natural rubber and may be used for referee purposes.