BS EN 46-1:2016 pdf download
BS EN 46-1:2016 pdf download.Wood preservatives – Determination of the preventive action against recently hatched larvae of Hylotrupes bajulus (Linnaeus) Part 1: Application by surface treatment (laboratory method).
Depending on the test being carried out either:
— on a set of test specimens of a susceptible wood species that is surface treated with a solution of the preservative; or
— if toxic values are to be determined, on several sets of test specimens of a susceptible wood species that are surface treated with a series of solutions in which the concentration of preservative is ranged In a given progression.
The treated test specimens are exposed to recently hatched larvae of Hylotrupes bajulus. The resulting attack is observed and compared with those in untreated control test specimens. lithe preservative has been prepared in the laboratory by dilution of a concentrate or by dissolution of a solid, the resulting attack is also compared to that in solvent or diluent treated control test specimens.
5 Test materials
5.1 Biological material
5.1.1 Hylotrupes bajulus (Linnaeus) larvae, within three days of hatching.
5.1.2 Source of larvae. Obtain the larvae from cultures reared, e.g. as described in Annex B.
5.1.3 Provision of larvae. Collect larvae from eggs laid by different females.
5.1.4 Choice of larvae. Use a mixed batch of these larvae for the test. Use ten larvae per treated test specimen or control test specimen.
5.2 Products and reagents
5.2.1 Paraffin wax, for fixing the glass plate and for sealing the end faces of test specimens to be treated with solutions in all cases in which water is the continuous phase.
NOTE Paraffin wax with a setting point of 52 °C to 54°C has been found to be suitable.
5.2.2 Gelatin, for sealing the end faces of test specimens to be treated with solutions in which an organic solvent is the continuous phase.
5.2.3 Water, complying with grade 3 of EN ISO 3696.BS EN 46-1 pdf download.
