BS EN 20-2:2023

Wood preservatives. Determination of the protective effectiveness against Lyctus brunneus (Stephens). Application by impregnation (Laboratory method) | Status: Current

1 Scope This part of the EN 20 series specifies a method for the determination of the protective effectiveness or the toxic values of a wood preservative against infection by Lyctus brunneus (Stephens) in wood which has been treated previously by full impregantion. This method is applicable to:

• — water-insoluble chemicals which are being studied as active insecticides; or
• — organic formulsation, as supplied or as prepared in the laboratory by dilution of concentrates.

This method is applicable to water-based preservatives.

NOTE This method can be used in conjuction with ageing procedures, which do not remove the added nutrient.