1.1 本试验方法包括测定果岭和其他砂基根区混合物的粒度分布。通过筛分测定大于0.05 mm（保留在270号筛上）的颗粒。淤泥和粘土百分比是通过沉淀过程，使用移液管法确定的。该程序是为放置绿色根区混合物而开发的，假设这些混合物的含沙量为80 % 按重量或更大。土壤的粒度分析可通过本试验方法或试验方法进行 D422页 . 该试验方法还描述了砂粒形状的定性评估。 1.2 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。 1.3 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。

1.1 This test method covers the determination of particle size distribution of putting green and other sand-based rootzone mixes. Particles larger than 0.05 mm (retained on a No. 270 sieve) are determined by sieving. The silt and clay percentages are determined by a sedimentation process, using the pipet method. This procedure was developed for putting green rootzone mixes, those assumed to have sand contents of 80 % by weight or greater. Particle size analysis of soils may be performed by this test method or Test Method D422 . This test method also describes a qualitative evaluation of sand particle shape. 1.2 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. 1.3 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.