ISO 18134-3:2015描述了通过在烘箱中干燥来测定分析试样中水分的方法。根据EN 14780，其用于一般分析样品。ISO 18134-3:2015本部分所述方法适用于所有固体生物燃料。固体生物燃料（接收时）的含水量始终基于试样的总质量（湿基）进行报告。 由于小颗粒尺寸的生物燃料具有很强的吸湿性，其含水量将随大气中的湿度而变化，因此，在测定热值、碳含量和氮含量的同时，测定试样的含水量。 注:当与生物质材料一起使用时，术语含水量可能会产生误导，因为未经处理的生物质通常包含不同数量的挥发性化合物（提取物），当通过烘箱干燥确定含水量时，这些挥发性化合物（提取物）可能会蒸发（见参考文献[1]和[2]）。

This document describes the method of determining the moisture content in the general analysis sample by drying in an oven. The method described in this document is applicable to all solid biofuels. The moisture content of solid biofuels (as received) is always reported based on the total mass of the test sample (wet basis). Since biofuels in small particle size are very hygroscopic, their moisture content will change with humidity in the atmosphere and, therefore, the moisture of the general analysis sample is determined simultaneously with the determination of other properties being measured (e.g. calorific value, volatile matter, metals, etc.). NOTE       Biomass materials can contain small amounts of volatile organic compounds (VOC) which can evaporate when determining moisture content by oven drying (see References [1] and [2]). The release of such compounds is quite small relative to the overall moisture content as determined by this method and is disregarded in this document.