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1、BRITISH STANDARD BS 6240:1990 EN 118:1990 Wood preservatives Determination of preventive action against Reticulitermes santonensis de Feytaud (laboratory method) This European Standard EN 118:1990 has the status of a British Standard. UDC 674.048.4:620.1:615.285.7.025 Licensed Copy: sheffieldun shef
2、fieldun, na, Wed Dec 06 14:27:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6240:1990 This British Standard was published under the authority of the Board of BSI and comes into effect on 31 December 1990 BSI 10-1999 First published July 1982 Second edition December 1990 The following BSI referenc
3、es relate to the work on this standard: Committee reference WPC/10 Draft for comment 88/52176 DC ISBN 0 580 19007 2 Cooperating organizations The European Committee for Standardization, under whose supervision this European Standard was prepared, comprises the national standards organizations of the
4、 following Western European countries. AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Orga
5、nization for Standardization IcelandTechnological Institute of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxemburgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalIns
6、tituto Portugus da Qualidade SpainAsociacin Espaola de Normalizacin y Certificacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.Date of issueComments Licensed Copy:
7、sheffieldun sheffieldun, na, Wed Dec 06 14:27:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6240:1990 BSI 10-1999i Contents Page Cooperating organizationsInside front cover National forewordii Brief history2 Text of EN 1183 National appendix AInside back cover National appendix BInside back cover
8、 Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 14:27:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6240:1990 ii BSI 10-1999 National foreword This British Standard has been published under the direction of the Wood Preservation Standards Policy Committee. BS 6240 was first published in 1
9、982. This revision supersedes BS 6240:1982, which is withdrawn. It is the English language version of EN 118:1990 “Wood preservatives Determination of preventive action against Reticulitermes santonensis de Feytaud (Laboratory method)”, published by the European Committee for Standardization (CEN).
10、EN 118:1990 was prepared as a result of discussion in CEN Technical Committee 38 “Durability of wood and wood-based products”, in which the UK participated. This edition of BS 6240 differs from the 1982 edition in that the “Field of application” has been extended to cover organic water-dispersible f
11、ormulations. National appendix A gives the constitution of the committee responsible for the UK participation in the preparation of this standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct a
12、pplication. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 10, an inside back cover and a back cover. This standard has been upd
13、ated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 14:27:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN
14、 118 Rev. March 1990 UDC 674.048.4:620.1:615.285.7.025 Key words: Wood preservatives, xylophagous animals, termites, analysis methods, determination, effectiveness limit, prevention, test equipment, test specimen, test specimen conditioning, tests, testing conditions, visual inspection, test results
15、, animal husbandry English version Wood preservatives Determination of preventive action against Reticulitermes santonensis de Feytaud (Laboratory method) Produits de prservation des bois Dtermination de lefficacit prventive contre Rticulitermes santonensis de Feytaud (Mthode de laboratoire) Holzsch
16、utzmittel Bestimmung der vorbeugenden Wirkung gegenber Reticulitermes santonensis de Feytaud (Laboratoriumsverfahren) This European Standard was accepted by CEN on 28 September 1989. CEN members are bound to comply with the requirements of the CEN/CENELEC Common Rules which stipulate the conditions
17、for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Central Secretariat or to any CEN member. This European Standard exists in three of
18、ficial versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to CEN Central Secretariat has the same status as the official versions. CEN members are the national standards organizations of
19、Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat:
20、 rue de Stassart 36, B-1050 Brussels CEN 1990 Copyright reserved to all CEN members Ref. No. EN 118:1990 E Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 14:27:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 118:1990 BSI 10-1999 2 Brief history This European Standard was drawn up by the Tec
21、hnical Committee CEN/TC 38 “Durability of wood and wood products” the Secretariat of which is held by AFNOR. In accordance with the Common CEN/CENELEC Rules, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, I
22、reland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Brief history2 Introduction3 1Scope3 2Field of application3 3Principle3 4Test materials3 5Sample of the preservative4 6Test specimens4 7Procedure5 8Expression of results7 9Test repor
23、t7 Annex A Example of a test report9 Annex B Example of a method of culturing termites10 Figure 1a Test assembly to show positioning of colony on test specimen6 Figure 1b Section of test assembly to show position of components6 Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 14:27:35 GMT+00:0
24、0 2006, Uncontrolled Copy, (c) BSI EN 118:1990 BSI 10-19993 Introduction This European Standard describes a laboratory test method which gives a basis for the assessment of the effectiveness of a wood preservative against Reticulitermes santonensis when applied as a surface treatment. This laborator
25、y method provides one criterion by which the value of a product can be assessed, and also its suitability, when applied to the surface, for preventive protection of the wood. It is further recommended that results from this test should be supplemented by those from other appropriate tests and, above
26、 all, by comparison with practical experience. 1 Scope This European Standard specifies a method for the determination of the effectiveness of a wood preservative against Reticulitermes santonensis de Feytaud1) when the preservative is applied as a surface treatment to wood. 2 Field of application T
27、his method is applicable to: organic formulations, 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-soluble materials, for example salts, where it is
28、 necessary to carry out the treatment on dry wood. It therefore does not apply to soaking and diffusion products for damp wood. The method is applicable whether or not the test specimens have been subjected to appropriate ageing procedures. 3 Principle Surface treatment of blocks of a susceptible wo
29、od species with the preservative or, if a concentrate is being used, with known dilutions of the preservative. Dividing the blocks into two test specimens. Exposure of the test specimens to specified colonies of Reticulitermes santonensis and assessment of the attack suffered after exposure in speci
30、fied conditions and after a specified period of time. Comparison of these results with those obtained from untreated control specimens. 4 Test materials 4.1 Biological material Reticulitermes santonensis de Feytaud, workers, soldiers and nymphs. The termites used shall be taken from colonies; Annex
31、B describes an example of a method of culture. 4.2 Products and reagents 4.2.1 Substrate for establishing the colonies. A choice of: 4.2.1.1 Fine white quartz sand consisting of grains of crystallized silica, very pure (99,5 % silica), and free from any organic substance2). 4.2.1.2 An hydrated, lami
32、nar, aluminium-iron-magnesium silicate exfoliated to give particles of 1 mm to 3 mm with an apparent density of 80 kg/m3 to 90 kg/m3. Particles of less than 1 mm shall be eliminated by sieving prior to use, to ensure the absence of free water and prevent any significant agglomeration of the particle
33、s. 4.2.1.3 Rigid polyurethane foam with open pores having a mass per unit of volume of 14 kg/m3 and a compressive strength3) of 0.02 N/mm2 to 0.03 N/mm3. It is advisable to cut the foam into sheets 15 mm thick. 4.2.2 Adhesive which cannot be attacked by the termites and is non-toxic, for securing th
34、e tubes. This adhesive shall also not react with the preservative applied to the wood. 4.2.3 Sealant, for example pure gelatine, for the transverse section surfaces. 4.2.4 Distilled or demineralized water, especially in order to moisten the substrate. 4.3 Apparatus 4.3.1 Culturing chamber, (incubato
35、r or room) with air circulation, controlled at between 26 C and 28 C with a tolerance of 1 C and a minimum of 75 % r.h. 4.3.2 Conditioning chamber, well ventilated and controlled at 20 2 C and at 65 5 % r.h.4). 1) This method can be applied not only to other species of Reticulitermes but also to oth
36、er species of the family Rhinotermitidae, where necessary adapting the temperature and humidity conditions and the assessment of attack to the specific behaviour of the species concerned. 2) In France, Fontainebleau sand, of which more than 97 % of the particles are between 75 4m and 300 4m in size,
37、 meets these requirements. 3) Determined in accordance with ISO 844. Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 14:27:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 118:1990 4 BSI 10-1999 4.3.3 Laboratory work area, well ventilated, where treatment of the test specimens is carried out5
38、). 4.3.4 Testing chamber, protected from light, ventilated and controlled at a temperature between 26 C and 28 C with a tolerance of 1 C and at a minimum of 75 % r.h. 4.3.5 Ordinary laboratory equipment for application by brushing or by pipette of a liquid preservative product and including an analy
39、tical balance. 4.3.6 Protective gloves 4.3.7 Instruments for handling the termites (e.g. forceps). 4.3.8 Glass tubes open at both ends, one end being ground: 5 Sample of the preservative The sample shall be representative of the product under test. 6 Test specimens 6.1 Species of wood The reference
40、species is Scots Pine, Pinus sylvestris Linnaeus. Additional tests using other species are permitted but, if so, this shall be stated in the test report. 6.2 Quality of wood Use only sound sapwood, straight grained, without knots and with a low resin content. Average growth rate: 2,5 to 8 annual rin
41、gs per centimetre. The proportion of summer wood in the annual rings shall not exceed 30 % of the whole. The wood shall have been neither floated nor stored in water nor dried at a temperature higher than 60 C nor subjected to any chemical treatment. 6.3 Provision of blocks for test specimens Cut th
42、e blocks from strips having a nominal cross-section 40 mm 10 mm (at 12 % moisture content). The strips shall not be planed but sawn to give a smooth, clean surface. The annual rings shall form an angle of 45 15 with the edge of the longitudinal face. Take the blocks required for each test from three
43、 lots each from a different tree, and at random from within each of these lots. 6.4 Dimensions of blocks and test specimens The nominal dimensions of each block measured at 12 % moisture content shall be: 200 mm 40 mm 10 mm6) The test specimens shall be taken, in the case of treated test specimens,
44、from the treated blocks which are divided into two. The surface area of each block is theoretically 80 cm2 but to find the actual surface area, the dimensions of each block shall be carefully checked. 6.5 Number and sub-division of test specimens The test specimens shall be divided as follows: treat
45、ed test specimens: these are the treated specimens which are exposed to attack by Reticulitermes santonensis; use at least 6 treated test specimens (2 from each lot). untreated control specimens for checking the virulence of the termites taken for the test: these untreated specimens are exposed to a
46、ttack by Reticulitermes santonensis; for each series of tests use at least 3 control specimens (1 from each lot). 6.6 Inserts The inserts are discs of untreated Scots Pine sapwood, 1 0,2 mm thick and having a diameter about 1 mm to 2 mm less than the interior diameter of the tubes (4.3.8), so that t
47、hey fit snugly into the tubes after moistening. 4) The conditioning of test specimens after treatment is permissible in the laboratory work area (4.3.3) provided that this meets the conditions specified for the conditioning chamber (4.3.2). 5) It is essential to follow proper safety measures for han
48、dling flammable or toxic material. It is essential that operators avoid excessive exposure to solvents or their vapours. interior diameter:25 mm length:110 mm 6) If the test specimens are to undergo ageing treatment, it is advisable to take from each lot 2 blocks 400 mm long, from which can be obtai
49、ned by sawing transversely into four: a 100 mm control test specimen for checking virulence a 300 mm test specimen for treatment and, after conditioning, division into three 100 mm test specimens, one to be tested unaged, a second to be tested after leaching and the third to be tested after evaporative ageing. Each 100 mm test specimen can receive 1 colony. Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 14:27:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 118:1990 BSI 10-19995 7 Procedure 7.1 Preparat