BS EN 84 pdf free download
BS EN 84-2020 pdf free download.Durability of wood and wood-based products – Accelerated ageing of treated wood prior to biological testing一Leaching procedure.
This document specifies a method for leaching. applicable to test specimens of wood or wood-based products which are subsequently subjected to biological tests.
This document is applicable to:
a) the pre-conditioning of test specimens prior to their being subjected to a biological test; or
b) assessment of loss of effectiveness by comparing the performance in a biological test of treated test specimens subjected to this procedure with others that have not undergone any leaching procedure.
NOTE The method can also be used for pre-conditloning of untreated wood, modified wood and wood-based panel products, whether they received preservative treatment or not.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN ISO 3696, Water for analytical laboratoly use — Specification and test methods (ISO 3696)
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• ISO Online browsing platform: available at https:J/www.iso.org/obp/ui
• IEC Electropedia: available at http://www.electropedia.org/
4 Principle
Impregnation with water under vacuum, followed by immersion in water for a specified period, of test specimens that have been prepared for biological testing against fungi or insects, using the appropriate standard methods.
5 Material and apparatus
5.1 Material
Water, complying with grade 3 of EN ISO 3696.
5.2 Apparatus
5.2.1 Conditioning chamber controlled at a temperature of (20 ± 2) °C and (65 ± 5) % relative
humidity for conditioning the test specimens.
5.2.2 Test vessels of material that does not react with the preservative product under test:
— either of glass, especially for the organic solvent products;
— or of plastic materials for products that are likely to attack glass.BS EN 84 pdf download.
