BS EN 49-1:2016 Wood preservatives — Determination of the protective effectiveness against Anobium punctatum (De Geer) by egg-laying and larval survival.
7.2 Wood quality The wood shall be free from visible cracks, stain, decay, insect damage and other defects. The wood shall not have been water-stored, floated, chemically treated or steamed. The wood shall originate from trees preferably felled in winter. The trees shall be cut immediately after felling and the timber rapidly air-dried or kiln dried at temperatures below 60 °C. The wood shall not be stored for more than five years. The wood shall be exclusively sapwood 2 ) and having between 2 annual rings per 10 mm and 10 annual rings per 10 mm. It is recommended to use test specimens of similar growth rate within a single test. 7.3 Provision of test specimens Prepare planed strips having a cross-section of (25 ± 0,5) mm x (15 ± 0,5) mm 3 ) removing a minimum of 2 mm from any surfaces exposed during drying. The longitudinal faces shall be parallel to the direction of the grain. The annual rings shall be parallel to the broad faces (contact angle of less than 5°). Make transverse cuts, neatly to give sharp edges and a fine-sawn finish to the end-grain surfaces, to give test specimens (50 ± 0,5) mm long. The specimens shall originate from a minimum of three trees or shall be taken at random from a stock originally of more than 500 test specimens. 7.4 Dimensions of test specimens The dimensions of each test specimen after reaching equilibrium in the conditioning chamber (5.3.2) shall be (50 ± 0,5) mm x (25 ± 0,5) mm x (15 ± 0,5) mm. Mark each test specimen so that it can be identified throughout the test. 7.5 Number of test specimens Use: a) five test specimens (see 7.4) for each preservative and each concentration; b) five untreated control test specimens (see 7.4) for a complete test of any given preservative; c) five control test specimens (7.4) treated with that solvent or diluent (5.2.4 or 5.2.5) if a solvent or diluent (water included) is used. BS EN 49-1 pdf download.