1、BSI Standards PublicationBS EN 118:2013Wood preservatives Determination of preventiveaction against Reticulitermesspecies (European termites)(Laboratory method)BS EN 118:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 118:2013. Itsupersedes BS EN 118:2005 w
2、hich is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/515, Wood preservation.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contra
3、ct. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 81698 7ICS 71.100.50Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authori
4、ty of theStandards Policy and Strategy Committee on 30 November 2013.Amendments issued since publicationDate Text affectedBS EN 118:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 118 November 2013 ICS 71.100.50 Supersedes EN 118:2005English Version Wood preservatives - Determination of pre
5、ventive action against Reticulitermes species (European termites) (Laboratory method)Produits de prservation des bois - Dtermination de laction prventive contre les espces de Reticulitermes (termites europens) (Mthode de laboratoire) Holzschutzmittel - Bestimmung der vorbeugenden Wirkung gegenber Re
6、ticulitermes-Arten (Europische Termiten) (Laboratoriumsverfahren) This European Standard was approved by CEN on 22 September 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national stand
7、ard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in an
8、y other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Repu
9、blic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN
10、 COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 118:2013 EBS EN 118:
11、2013EN 118:2013 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 Normative reference 5 3 Terms and definitions .5 4 Principle 5 5 Test materials .6 6 Sampling .7 7 Test specimens 7 8 Procedure .8 9 Expression of results . 13 10 Test report . 13 Annex A (informative) Example of a test repor
12、t 14 Annex B (informative) Example of a method of culturing termites . 16 Annex C (informative) Environmental, health and safety precautions within chemical/biological laboratory 17 Bibliography . 18 BS EN 118:2013EN 118:2013 (E) 3 Foreword This document (EN 118:2013) has been prepared by Technical
13、Committee CEN/TC 38 “Durability of wood and derived materials”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2014, and conflicting national standa
14、rds shall be withdrawn at the latest by May 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 118:2005
15、. Significant technical differences between this document and EN 118:2005 are as follows: deletion of the need to test specimens treated with the product free of active ingredients. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are
16、 bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Por
17、tugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 118:2013EN 118:2013 (E) 4 Introduction This document describes a laboratory method of testing which gives a basis for assessment of the effectiveness of a wood preservative, when applied as a surface
18、 treatment, against the Reticulitermes species of European termites. This laboratory method provides one criterion by which the value of a product can be assessed. It is further recommended that results from this test should be supplemented by those from other appropriate tests, and above all by com
19、parison with practical experience. When products which are very active at low concentrations are used it is very important to take suitable precautions to isolate and separate, as far as possible, operations involving chemical products, other products, treated wood, laboratory apparatus and clothing
20、. Suitable precautions should include the use of separate rooms, areas within rooms, extraction facilities, conditioning chambers and special training for personnel (see also Annex C for environmental, health and safety precautions). BS EN 118:2013EN 118:2013 (E) 5 1 Scope This European Standard spe
21、cifies a method for the determination of the preventive action of a wood preservative against the Reticulitermes species of European termites1)when the preservative is applied as a surface treatment to wood. This method is applicable to: water-insoluble chemicals which are being studied as active in
22、gredients; organic formulations, as supplied or as prepared in the laboratory by dilution of concentrates; organic water-dispersible formulations as supplied or as prepared in the laboratory by dilution of concentrates; and water-soluble materials, for example salts. NOTE This method can be used in
23、conjunction with an ageing procedure, for example EN 73 or EN 84. 2 Normative reference The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, t
24、he latest edition of the referenced document (including any amendments) applies. EN ISO 3696, Water for analytical laboratory use Specification and test methods (ISO 3696) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 representative sample
25、sample having its physical or chemical characteristics identical to the volumetric average characteristics of the total volume being sampled 3.2 supplier sponsor of the test (person or company providing the sample of wood preservative to be tested) 4 Principle Surface treatment of test specimens of
26、a susceptible wood species with the preservative or, if a concentrate is being used, with known dilutions of the preservative. 1) This method can be applied not only to different species of Reticulitermes, but also to other species of the family Rhinotermitidae, where necessary adapting the temperat
27、ure and humidity conditions and the assessment of attack to the specific behaviour of the species concerned. BS EN 118:2013EN 118:2013 (E) 6 Exposure of these test specimens to specified colonies of European Reticulitermes2)species and assessment of the attack suffered after exposure under fixed con
28、ditions and over a fixed period. Comparison of these results with those obtained from untreated and solvent or diluent-treated control test specimens. 5 Test materials 5.1 Biological material Workers, soldiers and nymphs of an identified termite species of Reticulitermes. The termite species and the
29、 locality of origin should be stated in the test report and their identification should be proved. The termites should be obtained from colonies reared as described in Annex B. 5.2 Products and reagents 5.2.1 Substrate for establishing the colonies. A choice of: 5.2.1.1 Fine white quartz sand consis
30、ting of grains of crystallized silica, very pure (99,5 % silica), and free from any organic substances3). 5.2.1.2 An hydrated, laminar, aluminium-iron-magnesium silicate exfoliated to give particles of 1 mm to 3 mm with an apparent density of 80 kg/ m3to 90 kg/ m3. Particles of less than 1 mm shall
31、be eliminated by sieving prior to use, to ensure the absence of free water and prevent any significant agglomeration of the particles. 5.2.2 Adhesive, which cannot be attacked by the termites and is non-toxic, for securing the tubes. This adhesive shall also not react with the preservative applied t
32、o the wood. 5.2.3 Sealant 5.2.3.1 Paraffin wax, setting point of 52 C to 54 C, for sealing the relevant surfaces of test specimens to be treated with solutions in which water is the continuous phase. 5.2.3.2 Gelatine, for sealing the relevant surfaces of test specimens to be treated with solutions i
33、n which an organic solvent is the continuous phase. 5.2.3.3 Inert adhesive, for sealing the relevant surfaces of test specimens to be treated with other solutions in which e.g. an emulsion solvent is the continuous phase. 5.2.4 Water, complying with grade 3 of EN ISO 3696. 5.2.5 Solvent or diluent.
34、A suitable volatile liquid that will dissolve or dilute the preservative but does not leave a residue in the wood which would have a toxic effect on the insect at the end of the conditioning period. 5.3 Apparatus 5.3.1 Culturing chamber, with air circulation, controlled at (26 2) C and a minimum rel
35、ative humidity of (70 5) %. 2) In providing biological validation of individual species, it is essential that the locality of origin of each test termite species is given. The description of the locality should at least include the district name. 3) In France, Fontainebleau sand, of which more than
36、97 % of the particles are between 75 m and 300 m in size, meets these requirements. BS EN 118:2013EN 118:2013 (E) 7 5.3.2 Conditioning chamber, well ventilated, controlled at (20 2) C and relative humidity (65 5) %4). 5.3.3 Laboratory work area, well ventilated, where treatment of the test specimens
37、 is carried out5). 5.3.4 Testing chamber, protected from light, ventilated and controlled at (26 2) C and at a minimum relative humidity of (70 5) %. 5.3.5 Ordinary laboratory equipment for application by brushing or by pipette of a liquid preservative product and including an analytical balance cap
38、able of weighing to an accuracy of 0,01 g. 5.3.6 Protective gloves 5.3.7 Instruments adapted for termite manipulation (aspirator, forceps). 5.3.8 Glass tubes open at both ends, one end being ground: interior diameter: 25 mm; length: 110 mm. 6 Sampling The sample of preservative shall be representati
39、ve of the product to be tested. Samples should 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 Sco
40、ts pine (Pinus sylvestris Linnaeus). Additional tests can be made with other timber 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-stored, flo
41、ated, chemically treated or steamed. The wood shall originate from trees preferably felled in winter. Wood that has been kiln dried at temperatures below 60 C may be used. The wood shall be exclusively sapwood containing little resin and having between 2,5 annual rings per 10 mm and eight annual rin
42、gs 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 similar growth rate within a single test. 4) The conditioning of test specimens after treatment is permissible in the laboratory work area (5.3.3) provided that
43、 this meets the conditions specified for the conditioning chamber (5.3.2). 5) It is essential to follow proper safety measures for handling flammable or toxic material. It is essential that operators avoid excessive exposure to solvents or their vapours. BS EN 118:2013EN 118:2013 (E) 8 7.3 Provision
44、 of test specimens Prepare planed strips with a fine-sawn finish and having a cross-section of (50 0,5) mm x (10 0,5) mm 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 have a contact a
45、ngle of (45 15) to the broad faces. 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 test specimens shall originate from a minimum of three trees or shall be taken at random from a stock originally of more
46、 than 500 test specimens. 7.4 Dimensions of test specimens The dimensions of each specimen after reaching equilibrium in the conditioning chamber (5.3.2) shall be (50 0,5) mm x (50 0,5) mm x (10 0,5) mm. The surface area of the face to be treated is theoretically 25 cm but an allowance shall be made
47、 for any encroachment of the sealing compound on to this face. Mark each test specimen so that it can be identified throughout the test. 7.5 Number and distribution of test specimens The test specimens shall be divided as follows: a) treated test specimens: these are the treated test specimens which
48、 are subject to attack by Reticulitermes; use at least 6 treated test specimens; b) untreated control test specimens for checking the virulence of the termites taken for the test: these untreated test specimens are subjected to attack by Reticulitermes; for each series of tests use at least three co
49、ntrol test specimens. 7.6 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 (5.3.8), so that they fit snugly into the tubes after moistening. 8 Procedure 8.1 Preparation of the test specimens 8.1.1 Conditioning of test specimens prior to sealing Allow the test specimens to condition in the conditioning chamber (5.3.2) for a minimum of two weeks. 8.1.2 Sealing of the transverse and the narrower longitudinal
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