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1、BRITISH STANDARD BS 6239:1990 EN 117:1989 Wood preservatives Determination of toxic values against Reticulitermes santonensis de Feytaud (Laboratory method) This European Standard EN 117 has the status of a British Standard. UDC 674.048.4:620.193.873:615.91.051.13 Licensed Copy: sheffieldun sheffiel
2、dun, na, Wed Dec 06 14:27:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6239:1990 This British Standard was published under the authority of the Board of BSI and comes into effect on 31 October 1990 BSI 12-1999 First published July 1982 Second edition October 1990 The following BSI references rel
3、ate to the work on this standard: Committee reference WPC/10 Draft announced in BSI News April 1990 ISBN 0 580 18602 4 Cooperating organizations The European Committee for Standardization, under whose supervision this European Standard was prepared, comprises the national standards organizations of
4、the 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 O
5、rganization 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 Portugal
6、Instituto 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 Cop
7、y: sheffieldun sheffieldun, na, Wed Dec 06 14:27:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6239:1990 BSI 12-1999i Contents Page Cooperating organizationsInside front cover National forewordii Brief history2 Text of EN 1173 National appendix AInside back cover National appendix BInside back co
8、ver Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 14:27:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6239:1990 ii BSI 12-1999 National foreword This British Standard has been published under the direction of the Wood Preservation Standards Policy Committee. BS 6239 was first published i
9、n 1982. This revision supersedes BS 6239:1982 which is withdrawn. This British Standard is identical with EN 117:1989 “Wood preservatives; Determination of the toxic values against Reticulitermes santonensis de Feytaud (laboratory method)” published by the European Committee for Standardization (CEN
10、). EN 117:1989 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 6239 differs from the 1982 edition in that a number of editorial changes have been introduced. The main purpose of the ch
11、anges is to align the requirements for the test report (clause 9 and Annex A) with other standards in the series. 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 t
12、he necessary provisions of a contract. Users of British Standards are responsible for their correct application. 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
13、, the EN title page, pages 2 to 12, an inside back cover and a back cover. This standard has been updated (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:
14、27:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 117 December 1989 UDC 674.048.4:620.193.873:615.91.015.13Supersedes EN 117:1981 Key words: Wood preservatives, xylophagous animals, termites, analysis methods, determination, effectiveness limit, te
15、st equipment, test specimen, test specimen conditioning, tests, testing conditions, visual inspection, test results, animal husbandry English version Wood preservatives; Determination of toxic values against Reticulitermes santonensis de Feytaud (Laboratory method) Produit de prservation des bois; D
16、termination du seuil defficacit contre Reticulitermes santonensis de Feytaud (Mthode de laboratoire) Holzschutzmittel; Bestimmung der Grenze der Wirksamkeit gegenber Reticulitermes santonensis de Feytaud (Laboratoriumsverfahren) This European Standard was accepted by CEN on 29 May 1989. CEN members
17、are bound to comply with the requirements of the CEN/CENELEC Common Rules which stipulate the conditions 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 a
18、pplication to the CEN Central Secretariat or to any CEN member. This European Standard exists in three official 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 Secretari
19、at has the same status as the official versions. CEN members are the national standards organizations of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committ
20、ee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels CEN 1989 Copyright reserved to all CEN members Ref. No. EN 117:1989 E Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 14:27:33 GMT+00:00 2006, Uncontro
21、lled Copy, (c) BSI EN 117:1989 BSI 12-1999 2 Brief history This European Standard was drawn up by the Technical Committee CEN/TC 38 “Durability of wood and wood products” the Secretariat of which is held by AFNOR. At its plenary meeting of October 1988, CEN/TC 38 adopted resolution no. 4 so that Sta
22、ndard EN 117, which is over 5 years old, be submitted to formal vote in view of its confirmation. 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, Ireland, Ita
23、ly, 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 results8 9Test report8 Annex A
24、Example of a test report10 Annex B Example of a method of culturing termites11 Figure 1 Example showing exposure of the test specimens to the colonies7 Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 14:27:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 117:1989 BSI 12-19993 Introduction Thi
25、s European Standard describes a laboratory test method which gives a basis for the assessment of the effectiveness of a wood preservative against Reticulitermes santonensis. It allows the determination of the concentration at which the product completely prevents attack by this insect of impregnated
26、 wood of a susceptible species. This laboratory method provides one criterion by which the value of a product can be assessed. In making this assessment the methods by which the preservative can be applied should be taken into account. It is further recommended that results from this should be suppl
27、emented by those from other appropriate tests and, above all, by comparison with practical experience. 1 Scope This European Standard specifies a method for the determination of the toxic values of a wood preservative against Reticulitermes santonensis de Feytaud1). 2 Field of application This metho
28、d is applicable to: water-insoluble chemicals which are being studied as active insecticides, or organic water-insoluble formulations as supplied or as prepared in the laboratory by dilution of concentrates, or water-soluble materials, for example salts. The method is applicable whether or not the t
29、est specimens have been subjected to appropriate ageing procedures. 3 Principle Impregnation of several sets of test specimens of susceptible wood with solutions in which the concentrations of preservatives are ranged in given progression. Exposure of these test specimens to specified colonies of Re
30、ticulitermes santonensis and assessment of the attack suffered after exposure under fixed conditions and over a fixed period. Comparison of these results with those obtained with untreated and solvent- or diluent-treated control specimens. Derivation of the toxic values of the product under test. 4
31、Test materials 4.1 Biological material Reticulitermes santonensis de Feytaud workers, soldiers and nymphs. The termites used shall be taken from colonies; Annex B describes an example of a method of culture. 4.2 Products and reagents 4.2.1 Solvents and diluents. Distilled or demineralized water or s
32、uitable volatile liquids which leave no residue in the wood which would have a toxic effect on the insect at the end of the conditioning period2). 4.2.2 Fumigant (if necessary) xylene, analytical reagent grade. 4.2.3 Substrate for establishing the colonies. A choice of: 4.2.3.1 Fine white quartz san
33、d consisting of grains of crystallized silica, very pure (99,5 % silica), and free from any organic substances3). 4.2.3.2 An hydrated, laminar, 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
34、 shall be eliminated by sieving prior to use, to ensure the absence of free water and prevent any significant agglomeration of the particles. 4.2.3.3 Rigid polyurethane foam with open pores of mass per unit of volume of 14 kg/m3 and compressive strength4). 0,02 N/mm2to 0,03 N/mm2. It is advisable to
35、 cut the foam into 15 mm thick sheets. 4.2.4 Distilled or demineralized water to moisten the substrate. 1) This working method can be applied not only to other species of Reticulitermes but also to other species of the family of the Rhinotermitidae, adapting the conditions of temperature and humidit
36、y where necessary to the specific requirements of the species concerned. 2) Do not use benzene as a solvent because it poses a health risk to those conducting the test. 3) In France, Fontainebleau sand, of which more than 97 % of the particles are between 75 4m and 300 4m in size, provides these fea
37、tures. 4) Determined in accordance with ISO 844. Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 14:27:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 117:1989 4 BSI 12-1999 4.3 Apparatus 4.3.1 Culturing chamber (incubator or room) with air circulation, controlled at between 26 C and 28 C, w
38、ith a tolerance of 1 C, and at a minimum of 75 % r.h. 4.3.2 Conditioning chamber, well ventilated and controlled at 20 2 C and 65 5 % r.h.5). 4.3.3 Laboratory work area, well ventilated, where treatment of the test specimens is carried out6). 4.3.4 Testing chamber, protected from light, ventilated a
39、nd 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 Treatment vessels of material that does not react with the preservative under test, for example, of glass for organic products and of plastic for salts containing fluorine. 4.3.6 Weights,
40、 chemically inert, for ballasting the test blocks. 4.3.7 Protective gloves 4.3.8 Vacuum vessels, fitted with stopcocks. 4.3.9 Vacuum pump fitted with a pressure gauge and capable of maintaining a pressure of 7 mbar7) and manometer. 4.3.10 Instruments for handling the termites (e.g. forceps). 4.3.11
41、Test containers of glass or transparent plastic, inert to the product under test and having the following dimensions: They shall be closed with a perforated cover to permit ventilation. 4.3.12 Glass rings 20 mm high, 20 mm in diameter and with a wall thickness of at least 1 mm. 4.3.13 Ordinary labor
42、atory equipment including an analytical balance. 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 species is Scots pine (Pinus sylvestris Linnaeus). Additional tests using other species are permitted but, i
43、f so, this shall be stated in the test report. 6.2 Quality of wood. Use only sapwood, straight-grained, without knots and with a low resin content. Average growth rate: 2,5 to 8 annular rings per centimetre. The proportion of summer wood in the annual rings shall not exceed 30 % of the whole. The wo
44、od 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 test specimen. Cut the test specimens from planed strips having a cross-section of 25 mm 15 mm, in which the annual growth rings shall form an
45、angle of 45 15 with the edge of the longitudinal face; the transverse sections of the test specimens shall be clean cut and have sharp edges. The specimens required for one test shall be taken at random from a batch of specimens originating from more than one tree. 6.4 Dimensions of test specimens.
46、The nominal dimensions of each specimen, measured at 12 % moisture content, shall be as follows: 50 mm 25 mm 15 mm The theoretical volume of each specimen is 18,75 cm3, but the size of each specimen shall be carefully checked so that the exact volume is known. 6.5 Number and sub-division of test spe
47、cimens. The test specimens shall be divided as follows: treated test specimens: these are the specimens which are impregnated and subjected to attack by Reticulitermes santonensis; use at least 3 test specimens for each concentration of the product; untreated control test specimens for checking the
48、virulence of the termites taken for the test: these non-impregnated specimens are subjected to attack by Reticulitermes santonensis; they are 3 in number; solvent or diluent treated control test specimens subjected to attack by Reticulitermes santonensis; they are 3 in number. 5) The conditioning of
49、 specimens after treatment may be carried out in the laboratory work area (4.3.3) provided that this meets the conditions specified for the conditioning chamber (4.3.2). 6) It is essential to follow proper safety measures for handling flammable and toxic materials. Avoid excessive exposure to solvents or their vapours. 7) 1 mbar = 101 kPa. base area35 cm2 to 60 cm2 minimum height8,5 cm volume500 cm3 to 1 000 cm3 Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 14:27:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 117:1989 BS