Wood preservatives. Determination of the protective effectiveness against Lyctus brunneus (Stephens) - Application by impregnation (laboratory method)
Wood preservatives. Determination of the protective effectiveness against Lyctus brunneus (Stephens) - Application by impregnation (laboratory method)
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1 Scope This Part of EN 20 specifies a method for the determination of the protective effectiveness or the toxic values of a wood preservative against infestation by Lyctus brunneus (Stephens) in wood which has been treated previously by full impregnation. This method is applicable to:
— water-insoluble chemicals which are being studied as active insecticides, or,
— organic formulations, as supplied or as prepared in the laboratory by dilution of concentrates.
This method is not applicable to water-based perservatives.
NOTE This method may be used in conjuction with ageing procedures, which do not remove the added nutrient.
Упомянутые в описании и другие стандарты BS