NF EN ISO 18134-3, X34-106-3 (06/2023)

This document describes the method for determining the moisture content of the sample for analysis by oven drying. The method described in this document is applicable to all solid biofuels. The moisture content of solid biofuels (on receipt) is always related to the total mass of the test sample (wet basis). Since biofuels made of small particles are very hygroscopic, their moisture content varies depending on the humidity of the atmosphere and, therefore, the humidity of the sample for general analysis is established simultaneously with the determination of other measured properties (e.g. calorific value, volatile matter, metals, etc.). NOTE Biomass materials may contain small amounts of volatile organic compounds (VOCs) which may evaporate when measuring moisture content by oven drying (see References[1] and[2]). The release of these compounds is very small compared to the overall moisture content as determined by this method and is not considered herein.
(Automatic translation from French)