BS EN ISO 17225-4:2014

1   Scope This part of ISO 17225 determines the fuel quality classes and specifications of graded wood chips . This part of ISO 17225 covers only wood chips produced from the following raw materials (see ISO 17225-1, 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