Solid biofuels - Determination of moisture content - Oven dry method - Part 3: Moisture in general analysis simple

This document describes the method of determining the moisture in the analysis test sample by drying in an oven. It is intended to be used for general analysis samples in accordance with ISO CD 14780 (14780). 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 test portion shall be determined simultaneously with determination of for example calorific value, carbon content and nitrogen content.

Note: The term moisture content when used with biomass materials can be misleading since untreated biomass frequently contains varying amounts of volatile compounds (extractives) which may evaporate when determining the moisture content by oven drying (see Bibliography [1] & [2]).