1.1 本试验方法包括测定废物样品中的表观比重和体积密度。在本试验方法中，根据材料类型将待测性能分为三组: 1.1.1 A组- 自由流动的液体；视比重（ASG）， 1.1.2 B组- 颗粒、粉末和与水反应的液体、固体或污泥；体积密度（BD），以及 1.1.3 C组- 散装固体（如砾石、纸张或木材等）；视比重（ASG）。 1.2 本试验方法旨在作为筛选试验，以补充可用于测定比重的更复杂定量分析技术。当没有更复杂的技术可用且废物总成分未知时，该试验方法为用户提供了筛选废物表观比重或体积密度的选项和能力。 1.3 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。 1.4 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 本试验方法旨在供废物管理行业的人员用于测定废物的表观比重和体积密度。 5.2 通过本试验方法确定的表观比重和体积密度可用于将测量体积转换为重量。 5.3 当与其他特性相关时，表观比重和体积密度可用于指示废物的特性。

1.1 This test method covers the determination of apparent specific gravity and bulk density in a waste sample. For the purpose of this test method, the property to be measured is classified into three groups based on material type: 1.1.1 Group A— Free-flowing liquids; apparent specific gravity (ASG), 1.1.2 Group B— Granules, powders, and water-reactive liquids, solids, or sludges; bulk density (BD), and 1.1.3 Group C— Bulk solids (such as gravel, paper, or wood, etc.); apparent specific gravity (ASG). 1.2 This test method is designed and intended as a screening test to complement the more sophisticated quantitative analytical techniques that may be used to determine specific gravity. This test method offers to the user the option and the ability to screen waste for apparent specific gravity or bulk density when the more sophisticated techniques are not available and the total waste composition is unknown. 1.3 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. 1.4 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 This test method is intended for use by those in the waste management industries for the determination of apparent specific gravity and bulk density of waste. 5.2 The apparent specific gravity and bulk density determined by this test method can be used for the conversion of measured volumes to weights. 5.3 The apparent specific gravity and bulk density, when correlated with other properties, can be used to indicate the character of the waste.