1、DRAFT FOR DEVELOPMENT DD ENV 807:2001 Corrected and reprinted December 2001 Wood preservatives Determination of the effectiveness against soft rotting micro-fungi and other soil inhabiting micro-organisms ICS 71.100.50 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWDD ENV 807:
2、2001 This Draft for Development, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 August 2001 BSI 11 December 2001 ISBN 0 580 37579 X National foreword This Dr
3、aft for Development is the official English language version of ENV 807:2001. It supersedes DD ENV 807:1993 which is withdrawn. This publication is not to be regarded as a British Standard. It is being issued in the Draft for Development series of publications and is of a provisional nature. It shou
4、ld be applied on this provisional basis, so that information and experience of its practical application may be obtained. Comments arising from the use of this Draft for Development are requested so that UK experience can be reported to the European organization responsible for its conversion into a
5、 European Standard. A review of this publication will be initiated 2 years after its publication by the European organization so that a decision can be taken on its status at the end of its three-year life. The commencement of the review period will be notified by an announcement in Update Standards
6、. According to the replies received by the end of the review period, the responsible BSI committee will decide whether to support the conversion into a European Standard, to extend the life of the prestandard or to withdraw it. Comments should be sent in writing to the Secretary of BSI Subcommittee
7、B/515/4, Assessment of preservation efficacy, at 389 Chiswick High Road, London W4 4AL, giving the document reference and clause number and proposing, where possible, an appropriate revision of the text. A list of organizations represented on this committee can be obtained on request to its secretar
8、y. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards El
9、ectronic Catalogue. Summary of pages This document comprises a front cover, an inside front cover, the ENV title page, pages 2 to 41 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comm
10、entsEUROPEANPRESTANDARD PRNORMEEUROPENNE EUROPISCHEVORNORM ENV807 May2001 ICS71.100.50 SupersedesENV807:1993 Englishversion WoodpreservativesDeterminationoftheeffectivenessagainst softrottingmicrofungiandothersoilinhabitingmicroorganisms ProduitsdeprservationduboisDterminationde lefficacitvisvisdesm
11、icroorganismesdepourriture molleetdautresmicroorganismesdusol HolzschutzmittelPrfverfahrenfrdieBestimmungder GrenzederWirksamkeitgegenModerfuleundandere erdbewohnendeMikroorganismen ThisEuropeanPrestandard(ENV)wasapprovedbyCENon1March2001asaprospectivestandardforprovisionalapplication. Theperiodofva
12、lidityofthisENVislimitedinitiallytothreeyears.AftertwoyearsthemembersofCENwillberequestedto submittheir comments,particularlyonthequestionwhethertheENVcanbeconvertedintoaEuropeanStandard. CENmembersarerequiredtoannouncetheexistenceofthisENVinthesamewayasforanENandtomaketheENVavailablepromp tly atnat
13、ionallevelinanappropriateform.Itispermissibletokeepconflictingnationalstandardsinforce(inparalleltothe ENV)untilthefinal decisionaboutthepossibleconversionoftheENVintoanENisreached. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,
14、Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved worl
15、dwideforCENnationalMembers. Ref.No.ENV807:2001EPage2 ENV807:2001 Contents page Foreword3 Introduction .4 1 Scope 5 2 Normativereferences 5 3 Termsanddefinitions. .5 4 Principle5 5 Testmaterials .5 6 Sampleofthepreservative .7 7 Testspecimens 7 8 Procedures .9 9 Validityoftest .13 10 Expressionofresu
16、lts 13 11 Testreport 14 AnnexA(informative) Optionalscreeningtest .16 AnnexB(informative) Determinationofsoilwaterholdingcapacity .26 AnnexC(informative) Rapidsoilvirulencetest 29 AnnexD(informative) Experimentalsetupofthetestcontainers .30 AnnexE(informative) Calculationofthenominaleffectiveretenti
17、on31 AnnexF(informative) Exampleofatestreport . .35 Bibliography 41Page3 ENV807:2001 Foreword ThisEuropeanPrestandardhasbeenpreparedbyTechnicalCommitteeCEN/TC38,“Durabilityofwoodand derivedmaterials“,thesecretariatofwhichisheldbyAFNOR. ThisEuropeanPrestandardsupersedesENV807:1993. TheannexesA,B,C,D,
18、EandFareinformative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoannouncethisEuropeanPrestandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain
19、,Sweden, SwitzerlandandtheUnitedKingdom.Page4 ENV807:2001 Introduction ThisEuropeanPrestandardspecifiesalaboratorymethodoftestwhichgivesabasisforassessingthe effectivenessofawoodpreservativeagainstmicrofungi(ascomycetesandfungiimperfecti)whichcausesoftrotof woodinservice.Theinfectionsourceisthenatur
20、almicrofloraofthesoilwhichmayalsocontainother microorganisms,suchasbacteriaandotherfungi,suchasmouldsandbasidiomycetes.Thislaboratorymethod providesonecriterionbywhichthevalueofawoodpreservativeproductcanbeassessed.Thisinformationhasto besupplementedbydatafromotherrelevanttestsandfrompracticalexperi
21、ence.Page5 ENV807:2001 1Scope ThisEuropeanPrestandardspecifiesamethodoftestfordeterminingthetoxiceffectivenessofawood preservative,appliedtowoodbyfullimpregnation,againstthemicrofungiwhichcausesoftrotofwood. Themethodisapplicabletotestingofformulatedproductsoroftheiractiveingredients. NOTE Amethodsu
22、itableforundertakingscreeningtestsofpotentialactiveingredientsisgiveninannexA. 2 Normativereferences ThisEuropeanPrestandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For d
23、atedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Prestandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN84, WoodpreservativesAcceleratedageingoftreatedwoodprior
24、tobiologicaltestingLeachingprocedure ENISO3696, WaterforanalyticallaboratoryuseSpecificationandtestmethods(ISO3696:1987) 3 Termsanddefinitions ForthepurposesofthisEuropeanPrestandard,thefollowingtermsanddefinitionsapply: 3.1 representativesample samplehavingitsphysicalorchemicalcharacteristicsidenti
25、caltothevolumetricaveragecharacteristicsofthetotal volumebeingsampled 3.2 supplier sponsorofthetest 4Principle Anumberofsmalltestspecimens(assmallstakes)areimpregnatedwiththepreservativeundertestataminimum ofthreeconcentrationsrangedabouttheretentionexpectedtoprovideprotectionthroughoutthetestperiod
26、.The testspecimensareexposedtoleachingaccordingtoEN84.Thespecimensarepartlyburiedverticallyina microbiallyactivesoil.Setsoftestspecimensareassessedafter8,16,24and32weeksofexposure.The performanceofthetestpreservativeisevaluatedbycomparisonwiththeperformanceofareferencepreservative. 5 Testmaterials 5
27、.1Biological materials 5.1.1Soil Naturaltopsoilorafertileloambasedhorticulturalsoil 1) ofpH6topH8andnotcontainingaddedagrochemicals. Itshallhaveawaterholdingcapacity(WHC)ofbetween25%( m/m)and60%( m/m). NOTE1 AsuitablemethodfordeterminingWHCisdescribedinannexB. 1) AhorticulturalsoiloftheJohnInnesNo.2
28、typeandwiththefollowingcompositionhasbeenfoundtobesuitable;seven partsbyvolumeloam,threepartsbyvolumesphagnumpeat,twopartsbyvolumesharpsandplus0,6gchalkand6,0gslow releasefertilizerperlitreofsoilmixture.IftheWHCistoohigh,itcanbeloweredbymodifyingthesoilwiththeaddition ofsand.Page6 ENV807:2001 Ifanat
29、uralsoilisused,itshallhavetheturfortop50mmremovedandshallnotbetakenfromadepthbelow 200mmfromtheoriginalsurface.Itshallbepassedthroughasieveofnominalaperturesize12,5mm.Ifitis necessarytostorethesoilpriortouse,itshallbestoredinclosedmoistureproofcontainers.Beforeuse, thoroughlymixthesampleofsoil. NOTE
30、2 Thesoilshouldonlybecollectedinamoistcondition. Ifahorticulturalsoilisusedwhichissterilizedduringitspreparation,then20%( m/m)ofanaturalsoil,preparedas above,shallbeaddedandthesoilsthoroughlymixedpriortothestartofthetest. Thesoilshallbeusedonlyonce. NOTE3 Ifassuranceofthevirulenceofthesoilisrequired
31、,thetestprocedureusingcottonclothdescribedinannexC,ora similarstandardizedprocedure,maybeused. 5.2 Productsandreagents 5.2.1 Solventsanddiluents Watertograde3ofENISO3696and,ifappropriate,volatileorganicliquidsleavinginthewoodnoresiduewhich wouldhaveatoxiceffectonthesoilinhabitingmicroorganismsatthee
32、ndoftheposttreatmentconditioning period. NOTE Informationonappropriatesolventsanddiluentsshouldbeprovidedbythesupplier. 5.2.2Reference preservative Acopper/chromiumpreservativewithacompositionequivalenttothefollowing: CuSO 4 . 5H 2 0 50,0%( m/m) K 2 Cr 2 0 7 48,0%( m/m) CrO 3 2,0%( m/m) Thepreservat
33、iveshallbepreparedfromingredientsofatleast95%( m/m)purity. 5.2.3Xylene (C 6 H 4 (CH 3 ) 2 )mixedisomers,technicalgrade. 5.3Apparatus 5.3.1 Conditioningchamber ,wellventilatedandmaintainedat(20 2)Cand(65 5)%r.h. 5.3.2 Ventilateddryingoven, capableofbeingmaintainedat(103 2)C. 5.3.3 Desiccators, withef
34、ficientdesiccant(silicagelforexample). 5.3.4 Treatmentvessels ,ofamaterialthatdoesnotreactwitheitherthepreservativeorsolventsordiluents,for exampleofglassfororganicproductsandplasticsmaterialsforsaltscontainingfluorine. 5.3.5 Weights,ofamaterialthatdoesnotreactwiththepreservativesolutionsundertest,t
35、oprovideballastfor thetestspecimens. 5.3.6 Plasticsmesh, ofamaterialthatdoesnotreactwiththepreservativesolutionsundertest,forretainingtest specimensduringimpregnation. 5.3.7 Vacuumvessels, fittedwithstopcocks. 5.3.8 Vacuumpump, fittedwithapressuregaugeandcapableofmaintainingapressureof0,7kPa.Page7 E
36、NV807:2001 5.3.9 Dryingvessels ,providedwithacoverandcontainingsupportswhichwillgiveaminimumofcontactwith thetreatedtestspecimenswhicharetobeplacedonthem.Thevesselsandsupportsshallbeofamaterialthat doesnotreactwiththetestsolventortestpreservative,forexampleglassfororganicproductsorofplasticmaterial
37、forsaltscontainingfluorine. 5.3.10 Culturechamber (incubatororroom),darkandmaintainedat(27 2)Cand(70 5)%r.h. 5.3.11 Vacuumfiltrationapparatus,comprisingvacuumflask,146mmdiameterBuchnerfunnelandfitting coarsegradefilterpapers. 5.3.12 Testcontainers,madeofmaterialwhichdoesnothaveatoxiceffectonthesoili
38、nhabitingmicro organismsandprovidedwithaventilatedlid.Thedepthshallbeatleast150mm,soastoprovideatleast30mm belowthetestspecimenswheninsertedinthesoiltoadepthof80mmandadequateclearanceabovethetopof theprotrudingpartsofthetestspecimens. NOTE Theexactdimensionsarenotcriticalbuttheydeterminethenumberoft
39、estspecimensineachvessel(whichshould notbelessthan10).AnexampleofasuitabletestcontainerisdescribedinannexD. 5.3.13 Safetyequipmentandprotectiveclothing, appropriateforthetestproduct,testsolventandreference preservative,toensurethesafetyoftheoperator. 5.3.14 Ordinarylaboratoryequipment, includingabal
40、anceaccurateto0,001g. 6 Sampleofthepreservative Thesampleofpreservativeshallberepresentativeoftheproducttobetested.Samplesshallbestoredand handledinaccordancewithanywrittenrecommendationsfromthesupplier. NOTE Forthesamplingofpreservativesfrombulksupplies,theproceduregiveninEN212shouldbeused. 7 Tests
41、pecimens 7.1 Speciesofwood Thefollowingspeciesshallbeusedforthetest: Scots pine ( Pinussylvestris Linnaeus)forproductsintendedtobeusedonsoftwoods; beech ( Fagussylvatica Linnaeus)forproductsintendedtobeusedonhardwoods. NOTE Additionaltestsmaybecarriedoutusingotherspeciesbut,ifso,thisshouldbestatedin
42、thetestreport. 7.2Wood quality Thewoodshallbefreefromcracks,stain,decay,insectdamageandotherdefects.Thewoodshallnothavebeen waterstored,floated,chemicallytreatedorsteamed. NOTE Woodthathasbeenkilndriedattemperaturesbelow60Cmaybeused. TheScotspineshallbeexclusivelysapwoodcontaininglittleresinandhavin
43、gbetween2,5annualgrowthringsper 10mmandeightannualgrowthringsper10mm.Theproportionoflatewoodintheannualringsshallnotexceed 30%ofthewhole. Thebeechshallbeevengrained,freefromtylosesanddiscolouration.Itshallhavebetweentwoannualgrowth ringsper10mmandsixannualgrowthringsper10mm. 7.3 Provisionoftestspecimens Conditionthewoodto(122)%(m/m)moisturecontent.Prepareplanedstripshavingacrosssectionof (100,1)mm (5 0,1)mm.Thelongitudinalfacesshallbeparalleltothedirectionofthegrain.TheannualringsPage8 ENV807:2001 shallhaveacontactangleof(90 15)tothebroadfaces.M
