1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 152:2011Wood preservatives Determination of theprotective effectiveness of apreservative treatment againstblue stain in wood in service Laboratory methodBS EN 152:2011 BRIT
2、ISH STANDARDNational forewordThis British Standard is the UK implementation of EN 152:2011. Itsupersedes BS7066-1:1990 (R93) and BS7066-2:1990 (R93) which arewithdrawnThe UK participation in its preparation was entrusted to TechnicalCommittee B/515, Wood preservation.A list of organizations represen
3、ted on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012ISBN 978 0 580 69581 0ICS 71.100.50Compliance with a Britis
4、h Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2012.Amendments issued since publicationDate Text affectedBS EN 152:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 152
5、 November 2011 ICS 71.100.50 Supersedes EN 152-1:1988, EN 152-2:1988English Version Wood preservatives - Determination of the protective effectiveness of a preservative treatment against blue stain in wood in service - Laboratory method Produits de prservation du bois - Dtermination de lefficacit pr
6、ventive dun traitement de protection du bois mis en uvre contre le bleuissement fongique - Mthode de laboratoire Holzschutzmittel - Bestimmung der vorbeugenden Wirksamkeit einer Schutzbehandlung von verarbeitetem Holz gegen Blaepilze - Laboratoriumsverfahren This European Standard was approved by CE
7、N on 24 September 2011. 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 standard without any alteration. Up-to-date lists and bibliographical references concerning such national standa
8、rds 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 any other language made by translation under the responsibility of a CEN member into its own language and not
9、ified 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 Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuan
10、ia, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN
11、 All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 152:2011: EBS EN 152:2011EN 152:2011 (E) 2 Contents Page Foreword 4Introduction .51 Scope 62 Normative references 63 Terms and definitions .74 Principle 75 Test materials .85.1 Biologica
12、l material .85.2 Products and reagents 85.3 Apparatus 105.4 Other material 116 Sampling 117 Test specimens . 117.1 Species of wood 117.2 Wood quality . 127.3 Preparation of sticks and blocks 127.4 Preparation of test specimens 137.5 Number of test specimens . 138 Procedure 148.1 Treatment of the woo
13、d test specimens 148.2 Pre-conditioning of the test specimens prior to fungal test 178.3 Fungal test . 178.4 Test conditions and duration of test. 188.5 Assessment of the test specimens . 189 Validity of results 1910 Reporting the results 2011 Test report . 20Annex A (normative) Detailed information
14、 on coating products 22A.1 General . 22A.2 Alkyd coating material for organic solvent based preparations (5.2.2.2) . 22A.3 Acrylic coating material for water based preparations (5.2.2.3) 24Annex B (normative) Preparation of a spore suspension of the test fungi . 27Annex C (informative) Information r
15、egarding sterilisation procedures 28C.1 Ionising irradiation 28C.2 Steam . 28Annex D (informative) Figures on equipment and diagrams . 29Annex E (informative) Instructions on the test procedure . 34Annex F (normative) Artificial weathering cycle . 36F.1 Introduction . 36F.2 Apparatus minimum require
16、ments 36F.3 Weathering cycles 37F.4 Criteria to select weathering cycles 42F.5 Conditioning 42BS EN 152:2011EN 152:2011 (E) 3 Annex G (informative) Example of a test report . 43Annex H (informative) Environmental, health and safety precautions within chemical/biological laboratory . 44Bibliography 4
17、5BS EN 152:2011EN 152:2011 (E) 4 Foreword This document (EN 152:2011) has been prepared by Technical Committee CEN/TC 38 “Durability of wood and wood-based products”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publica
18、tion of an identical text or by endorsement, at the latest by May 2012, and conflicting national standards shall be withdrawn at the latest by May 2012 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 b
19、e held responsible for identifying any or all such patent rights. This document supersedes EN 152-1:1988, EN 152-2:1988. Significant technical differences between this standard and EN 152-1 and EN 152-2:1988 are as follows: a) introduction of a new harmonised specification for the test specimens use
20、d in the diverse biological tests; b) merging of Part 1 relating to the brushing procedure and Part 2 concerning the application by methods other than brushing; c) taking into account of the terms given in EN 1001-1 and the definitions of EN 1001-2; d) introduction of an informative Annex to take ac
21、count of consideration for minimisation of environmental and health hazards caused by the use of this biological test. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, B
22、ulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 152:2011E
23、N 152:2011 (E) 5 Introduction The test method described in this European Standard is a laboratory method combined with pre-conditioning (natural or artificial weathering), which provides a basis for assessment of the effectiveness of a wood preservative or wood preservative systems in preventing the
24、 development of blue stain fungi in wood in service where disfigurement can be considered important, such as external decorative timber and joinery. The method permits the determination of the effectiveness of undiluted preservatives and may also be used to test preparations in which the proportions
25、 of the individual components (active ingredients) have been varied and so establish for the active ingredients the limit of their effectiveness. It should be used to assess the value of the protection, taking into account the method of application and in particular the suppliers specifications. It
26、is recommended that the results of these tests should be supplemented by further suitable tests and especially by practical experience. Suitable precautions should include the use of separate rooms, areas within rooms, extraction facilities, conditioning chambers and special training for personnel (
27、also see Annex H for environmental, health and safety precautions). BS EN 152:2011EN 152:2011 (E) 6 1 Scope This European Standard specifies a method which is only suitable for testing preparations and systems which are intended to prevent the occurrence of blue stain fungi in wood in service. It is
28、 not suitable for assessing the temporary preventive effectiveness of anti-stain preservatives on round wood or on freshly cut wood. The method is not intended for the determination of the fungicidal properties of the surface coating applied to the wood after the priming coat. This European Standard
29、 lays down a method for determining the effectiveness of a preparation applied by e.g. brushing, spraying, spraying tunnel, dipping or vacuum and pressure treatments resulting in an equivalent retention of product in preventing the development of blue stain fungi in wood in service. It is also appli
30、cable where a primer paint is used in conjunction with the preservative system1). This method is applicable to the following types of preparations or systems: type A: fungicidal preparations with or without pigment, used in conjunction with unspecified varnishes or paint coatings; or type B: fungici
31、dal preparations with or without pigment, used in conjunction with specified varnishes or paint coatings; or type C: fungicidal preparations with or without pigment, used without any subsequent paint, varnish or other coating. NOTE It is also possible to test the effectiveness in preventing blue sta
32、in in service of a combined protective system which involves the application of one preparation by a penetrating treatment technique followed by a subsequent application of a different preparation by a superficial treatment method. 2 Normative references The following referenced documents are indisp
33、ensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 927-6:2006, Paints and varnishes Coating materials and coating systems for exterior wood Pa
34、rt 6: Exposure of wood coatings to artificial weathering using fluorescent UV lamps and water EN ISO 3696, Water for analytical laboratory use Specification and test methods (ISO 3696:1987) 1) The method may also be used for first coat (primer) paints required to give protection during storage of co
35、mponents on-site (see Annex E). These are tested as for preparations of type C. BS EN 152:2011EN 152:2011 (E) 7 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 representative sample sample having its physical and/or chemical characteristics i
36、dentical to the volumetric average characteristics of the total volume being sampled EN 1001-2, 4.71 3.2 supplier sponsor of the test (person or company providing the sample of wood preservative to be tested) Adapted from EN 1001-2, 4.83 4 Principle The basic principles of the test method are to pro
37、vide the conditions for infection by blue stain fungi into the treated face and into the cut surface behind the treated face (for surface treatments) and to observe the development of infection into the treated face. A series of blocks of the given timber species are treated with the preparation und
38、er test on all faces except the end-grain faces. Subsequently the blocks are cut in the direction of the grain such that two specimens are produced. The treatment differs according to the type of preparation (Annex E, Table E.1) and specifications for its use: Type A Preparations designed to be used
39、 with unspecified varnish or paint coatings are tested using the application rate appropriate to the preparation (Annex E, Table E.2) or as otherwise specified by the supplier followed by the standard test varnish. Type B Preparations designed to be used with specified varnish or paint coatings are
40、tested using the application rate appropriate to the preparation (Annex E, Table E.2) or as otherwise specified by the supplier followed by a surface coating strictly according to the suppliers specification. Type C Preparations designed to be used without subsequent varnish or paint coatings are te
41、sted using the application rate appropriate to the product (Annex E, Table E.2) or as otherwise specified by the supplier but with no subsequent application of coating. Treated test specimens are exposed to pre-conditioning (natural or artificial weathering). Weathered test specimens are then expose
42、d in the laboratory to the action of a mixed culture of two fungi causing blue stain in service. NOTE Preparations designed to be used solely in use class 2 (EN 335) may be preconditioned by using the evaporative aging method in EN 73 in place of the natural or artificial weathering procedures in th
43、is standard. BS EN 152:2011EN 152:2011 (E) 8 5 Test materials 5.1 Biological material The test fungi to be used in all tests are2) Aureobasidium pullulans (de Bary) Arnaud, strain P 2683), source Hann. Mnden; Sydowia polyspora (Bref. (analytical reagent grade) 1 mol/l NaOH 120 ml; 0,1 mol/l HCl 390
44、ml; water to make up 1 000 ml. 5.2.2 Coating material 5.2.2.1 General Tests can be performed for a specific coating material which has been specified by the supplier. Otherwise a generic coating material can be used as detailed under 5.2.2.2 and 5.2.2.3 below. 2) Maintain the strains on 2 % malt aga
45、r and subculture them at intervals not exceeding 6 months. Obtain new cultures if there is evidence of degeneration such as loss of pigmentation or the ability to produce conidia. Cultures can be obtained from Bundesanstalt fr Materialforschung und -prfung, Unter den Eichen 87, 12205 Berlin or from
46、the CABI Bioscience, Bakeham Lane, Egham, Surrey TW20 9TY UK. 3) Identical to strain no. IMI 269 216 of culture deposited at CABI Bioscience, Egham. 4) Identical to strain no. IMI 269 217 of culture deposited at CABI Bioscience, Egham. BS EN 152:2011EN 152:2011 (E) 9 5.2.2.2 For organic solvent pres
47、ervative products An unpigmented varnish based on low viscosity, long oil alkyd resin, with driers and without any fungicidal or fungistatic components (see A.2). Two options are provided whether or not UV protection is present. NOTE The varnish may be stored unopened for up to 2 years, but once the
48、 container has been opened, unused quantities should not be stored longer than 1 week for further use. 5.2.2.3 For waterborne preservative products An unpigmented varnish based on low viscosity acrylic resin, with an in-can preservative for the resin (see A.3). NOTE The varnish may be stored unopene
49、d for up to half a year, but once the container has been opened, unused quantities should not be stored longer than 1 week for further use. 5.2.3 Test product without active ingredients If additional controls are requested, the product under test without the active ingredient(s) (see 7.5.2). 5.2.4 Solvents and diluents 5.2.4.1 White spirit For the characteristics of the white spirit see Annex A (A.2.1.2). 5.2.4.2 Water Complying with grade
