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Solid biofuels. Fuel specifications and classes - Graded firewood

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1 Scope

This document specifies the fuel quality classes and specifications of graded firewood. This document applies only to firewood produced from the following raw materials (see ISO 17225‑1:2021, Table 1):

  • 1.1.1 Whole trees without roots;

  • 1.1.3 Stemwood;

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

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