What is ISO 17225-4 about?
ISO 17225-4 determines the fuel quality classes and specifications of graded wood chips .
ISO 17225-4 covers only wood chips produced from the following raw materials :
Forest, plantation, and other virgin wood
By-products and residues from the wood processing industry
Chemically untreated used wood
NOTE 1: ISO 17225- 4 covers only wood chips, which are produced with sharp tools, and does not cover hog fuel, which is produced with blunt tools.
NOTE 2 : Wood briquettes produced according to ISO 17225-4 ca...
BS EN ISO 17225-4:2021 history
2021BS EN ISO 17225-4:2021 Solid biofuels. Fuel specifications and classes - Graded wood chips
2015BS EN ISO 17225-4:2014 Solid biofuels. Fuel specifications and classes. Graded wood chips
2011BS EN 14961-4:2011 Solid biofuels. Fuel specifications and classes. Wood chips for non-industrial use