BS EN ISO 17225-5:2021

This standard BS EN ISO 17225-5:2021 Solid biofuels. Fuel specifications and classes is classified in these ICS categories:

• 27.190 Biological sources and alternative sources of energy
• 75.160.40 Biofuels

This document determines the fuel quality classes and specifications of graded firewood. This document covers only firewood produced from the following raw materials (see ISO 17725‑1:2021, Table 1):

• 1.1.1 Whole trees without roots;

• 1.1.3 Stem wood;

• 1.1.4 Logging residues (thick branches, tops etc.);

• 1.2.1 Chemically untreated by-products and residues from wood processing industry.