scope:

This Part of EN 599 specifies for each of the five hazard classes defined in prEN 335-1, the requirements for classifying and labelling of wood preservatives according to their performance and suitability for use. It is concerned only with the effectiveness of wood preservatives against biological agencies of deterioration and where relevant, their resistance to loss of effectiveness due to leaching by water, to evaporation or to changes caused by natural exposure to field test conditions. This European Standard is applicable to all wood preservative formulations supplied for application in liquid form for the preventive treatment of timbers (structural and non-structural) used to combat wood-attacking fungi, including those causing disfigurement, wood-attacking insects and marine organisms as described in HD 1001 and EN 335-1. It does not apply to preservatives supplied for application as pastes, solids or in capsule form in so far as they cannot be tested without modification of the biological tests demanded in this Standard. It does not apply either to preservatives for remedial (curative) treatments, to those applied to prevent sap-stain fungi on green (unseasoned) timber or to those applied solely to prevent fungi causing disfigurement of wood in service.