This part of EN 335 defines five hazard classes which represent the different service situations to which wood and wood-based products can be exposed. This part also indicates the biological agents relevant to each situation. Annex A gives information to these biological agents.
Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
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