BS EN 1390:2020 pdf download
BS EN 1390:2020 pdf download.wWood preservatives – Determination of the eradicant action against Hylotrupes bajulus(Linnaeus) larvae — Laboratory method.
5.2 Products and reagents
5.2.1 Paraffin wax, for sealing the relevant surfaces of specimens to be treated with solutions in which water is the continuous phase.
NOTE Paraffin wax with a setting point oF 52 C to 54 C has been found suiiable.
5.2.2 Gelatine, for sealing the relevant surfaces of 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.
5.2.4 Solvent or diluent. a volatile liquid that will dissolve or dilute the preservative but does not leave a residue in the wood at the end of the post-treatment conditioning period that has a toxic eftect on the insects.
CAUTION — Do not use benzene or other solvents which pose a health risk.
5.3 Apparatus
5.3.1 CulturIng chamber, with air circulation, controlled at (28 ± 2) °C and at a relative humidity 01(70 ± 5) %.
5.3.2 Ventilated fume cupboard, in which the specimens are treated with an input air temperature of (20 ± 5) C.
The maximum air speed, measured at the input opening with the sash in the approximate operation position should be approx. 0,5 rn/s.
CAUTION — It is essential to follow safety procedures for handling flammable and toxic materials. Avoid excessive exposure of operators to solvents or their vapours.
5.3.3 TestIng chamber, ventilated and controlled at (21 ± 2) ec and at a relative humidity of
(75±5)%.
5.3.4 DrIll and twist drills, with 3 mm, 4mm and 5 mm diameters.
5.3.5 Pipettes as specified in ISO 835:2007, Class B- graduated pipette with no waiting time. with a capacIty S ml and an accuracy of ±0,05 ml.
5.3.6 Brush of appropriate size, to be used when the test substance is applied by brushing
(8.5.2).
5.3.7 Safety equipment and protective clothing, appropriate for the test product and the test, to ensure the safety of the operator (see also Annex C).
5.3.8 OrdInary laboratory equipment, including a balance capable of weighing to an accuracy of ±1 mg.
5.3.9 Rectangular cover with sides, constructed either of glass, plastics, plywood and of a height not less than 200 mm and with an open face of sufficient size to cover all the treated specimens from a single test.
5.3.10 X-ray apparatus (optional) with tungsten target and beryllium window, with voltage
and current continuously variable In the ranges:
— voltage: 10 kV to 50 kV;
— current: 0 mA to 15 mA.
5.3.11 Protective gloves.
6 SamplIng
The sample of preservative shall represent the product to he tested. Samples shall be stored and handled in accordance with any written recommendations from the supplier.
For the sampling of preservatives from bulk supplies, the procedure given in EN 212 should be used.
7 Test specimens
7.1 SpecIes of wood
The reference species is Scots pine (Pinussylvestris Unnaeus).
NOTE In southern European countries the species of pine most frequently Infested by Hyiofrupes &ijuIus can be used as an alternative, provided that the suitability of the species for use in the tests specilied in this standard has been demonstrated in all aspects (development or larvae, resistance to impregnation. etc.).
Additional tests may be carried out using other species but, if so. this should be stated In the test report.
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.storcd, floated, chemically treated or steamed.
The wood should preferably be felled in winter.
Wood that has been kiln dried at temperatures below 60 C may be used.
The wood should not have been stored for more than five years.
The wood shall be exclusively sapwood contalnrng little resin and having between two and a half annual rings per 10 mm and eight annual rings per 10 mm. The proportion of latewood in the annual rings shall not exceed 30 % of the whole.
It is recommended to use test specimens of a similar growth rate within a single test.
7.3 Provision of test specimens
Prepare planed strips having a uuss-suction of (100 i 2) mm (25 i 2) mm removing a mimmuni of 2 mm from any surface 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 359, (see Figure 1). Make transverse cuts neatly to give sharp edges and a fine-sawn finish to the end-grain surfaces, to make test specimens (150 ± 2) mm long.
The test specimens shall originate from a minimum of three trees or shall be taken at random from a stock originally of more than 100 test specimens.
