Ochranné prostředky na dřevo - Stanovení preventivního účinku proti Lyctus brunneus (Stephens) - Část 1: Aplikace povrchovou impregnací (Laboratorní metoda) (Norma k přímému použití jako ČSN).

Informácie o norme:

Označenie normy: ČSN EN 20-1
Rozlišovací znak: 490688
Katalógové číslo: 519071
Dátum vydania normy: 1.6.2024
Počet strán: 28
Približná hmotnosť: 84 g (0.19 libier)
Krajina: Česká technická norma
Kategória: Technické normy ČSN

Anotácia textu normy ČSN EN 20-1 (490688):

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-based preservatives, for example salts.
NOTE - This method can be used in conjuction with ageing procedures, which do not remove the added nutrient