BS EN 20-1. Wood preservatives. Determination of the protective effectiveness against Lyctus Brunneus (Stephens) Part 1. Application by surface treatment (laboratory method)
CURRENCY
Standard number:
22/30452936 DC
Pages:
23
Released:
2022-10-06
Status:
Draft for Comment
DESCRIPTION
22/30452936 DC
This standard 22/30452936 DC BS EN 20-1. Wood preservatives. Determination of the protective effectiveness against Lyctus Brunneus (Stephens) is classified in these ICS categories:
71.100.50 Wood-protecting chemicals
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) when the product is applied as a surface treatment to wood. 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; or - organic water-dispersible formulations as supplied or as prepared in the laboratory by dilution of concentrates; or - water-soluble materials, for example salts. NOTE This method can be used in conjuction with ageing procedures, which do not remove the added nutrient.