ISO 17225-2:2021
Solid biofuels — Fuel specifications and classes — Part 2: Graded wood pellets
Product Details
— 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.
Thermally treated biomass pellets (e.g. torrefied pellets) are not included in the scope of this document.