This document determines the fuel quality classes and specifications of graded wood briquettes. This document covers only wood briquettes produced from the following raw materials (see ISO 17225-1: 2021, Table 1):
— 1.1 Forest, plantation and other virgin wood
— 1.2 By-products and residues from wood processing industry
— 1.3.1 Chemically untreated used wood
NOTE Thermally treated biomass briquettes (e.g. torrefied briquettes) are not included in the scope of this document.