1.1 该试验方法包括测定样品干燥后剩余的总固体量。适用于该程序的材料包括根据实践制备的样品 E1757 和根据试验方法制备的无提取物材料 E1690 .颗粒木燃料的试验方法 E871 应该使用。 1.2 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.3 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》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 4.1 水分是任何生物质样品中普遍存在的可变成分。水分不被视为生物质的结构成分，并且可以随着生物质样品的储存和处理而变化。总固体含量的测定允许将生物质样品校正为对于特定样品恒定的烘箱干燥固体质量。 4.2 该程序不适用于加热至105时明显变化的生物质样品 °C，例如，未洗涤的酸预处理生物质仍含有游离酸。 4.3 一些含有大量游离糖或蛋白质的材料在测试方法B中使用的直接红外加热元件下会变成焦糖或棕色。这些材料中的总固体应通过测试方法A进行测定。

1.1 This test method covers the determination of the amount of total solids remaining after drying a sample. Materials suitable for this procedure include samples prepared in accordance with Practice E1757 and extractive-free material prepared in accordance with Test Method E1690 . For particulate wood fuels, Test Method E871 should be used. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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 ====== 4.1 Moisture is a ubiquitous and variable component of any biomass sample. Moisture is not considered a structural component of biomass and can change with storage and handling of biomass samples. The determination of the total solids content allows for the correction of biomass samples to an oven-dried solids mass that is constant for a particular sample. 4.2 This procedure is not suitable for biomass samples that visibly change on heating to 105 °C, for example, unwashed acid-pretreated biomass still containing free acid. 4.3 Some materials that contain large amount of free sugars or proteins will caramelize or brown under direct infrared heating elements used in Test Method B. Total solids in these materials should be done by Test Method A.