本文件描述了一种测定分级热处理和致密生物质燃料（如ISO/TS 17225-8中分类的生物质燃料）吸附性的方法。 除了ISO/TS 17225-8中描述的造粒材料外，该方法还可适用于ISO 17225-1表14和表15中规定的非压缩或非致密热处理生物质。

This document specifies a method for the determination of water sorption in a laboratory setting and provides a measure for how the durability is impacted as a result of immersion in water. Post-immersion durability reduction is calculated as the difference between the durability of the as-received sample and the durability of the wetted product.