1.1 本试验方法包括使用棉花分类仪测量棉花营销用原棉的颜色、杂质含量、马克隆值、上半平均长度（长度）、均匀性指数和断裂韧性（强度）。 1.2 本试验方法适用于陆地和特长纤维（ELS）原棉。 1.3 本试验方法适用于辊轧和锯轧原棉。 1.4 本试验方法包括以下章节。 部分 颜色 8 – 11 垃圾含量 12 – 15 马克隆读数 16 – 19 上半部分平均长度（长度）和均匀性指数 20 – 23 断裂韧性（强度） 24 – 27 1.5 以英寸-磅和国际单位制表示的数值应单独视为标准。括号中给出的值仅供参考。 1.6 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。 1.7 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====== 4.1 本试验方法适用于商业装运原棉包的试验。 4.2 本试验方法描述了使用棉花分类仪器测试原棉的可接受实践，该仪器能够测试马克隆值读数、长度、均匀性指数、强度、Rd（颜色）、+b（颜色）、面积百分比（杂质）和颗粒数（杂质）的纤维特性。

1.1 This test method covers the measurement of color, trash content, micronaire, upper half mean length (length), uniformity index and breaking tenacity (strength) of raw cotton for cotton marketing using a cotton classification instrument. 1.2 This test method is applicable to Upland and Extra Long Staple (ELS) raw cotton. 1.3 This test method is applicable to roller and saw ginned raw cottons. 1.4 This test method contains the following sections. Section Color 8 – 11 Trash Content 12 – 15 Micronaire Reading 16 – 19 Upper Half Mean Length (Length) and Uniformity Index 20 – 23 Breaking Tenacity (Strength) 24 – 27 1.5 The values stated in both inch-pound and SI units are to be regarded separately as the standard. The values given in parentheses are for information only. 1.6 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. 1.7 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 ====== 4.1 This test method is accepted for testing of bales of raw cotton in commercial shipments. 4.2 This test method describes acceptable practices for testing of raw cotton using cotton classification instruments that are capable of testing the fiber properties of micronaire reading, length, uniformity index, strength, Rd (color), +b (color), percent area (trash) and particle count (trash).