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IS 4873-1: Methods of laboratory testing of wood preservatives against fungi and borers (powder post beetles) : Part 1 Determination of threshold values of wood preservatives against fungi PDF

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Preview IS 4873-1: Methods of laboratory testing of wood preservatives against fungi and borers (powder post beetles) : Part 1 Determination of threshold values of wood preservatives against fungi

इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 4873-1 (2008): Methods of laboratory testing of wood preservatives against fungi and borers (powder post beetles) : Part 1 Determination of threshold values of wood preservatives against fungi [CED 9: Timber and Timber Stores] “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS 4873 (Part 1) : 2008 rfJ 'J17'? 2./ JOfFIifj ~ 3lR ~~ ~) ~ ~ (tn\3'5X qfr wan cfi ~ lffre:rur ~ qfr 1fTTJ 1 cr>41en ~ clCf)~ qft ~lffi ~ ~~Itf)C"S llA ~ ~ y;RTerur ) ( Ci'8'?/ Indian Standard METHODS OF LABORATORY TESTING OF WOOD PRESERVATIVES AGAINST FUNGI AND BORERS (POWDER POST BEETLES) PART 1 DETERMINATION OF THRESHOLD VALUES OF WOOD PRESERVATIVES AGAINST FUNGI ( Second Revision) ICS 71.100.50 c SIS2008 BUREAU OF INDIAN STANDARDS MANAK SHAVAN. 9 BAHADUR SHAH ZAFAR MARG NEW DELH I 110002 June 2008 Price Group 3 Timber and Timber Stores Sectional Committee,CED 9 FOREWORD This Indian Standard (Part I) (Second Revision)wasadopted bytheBureauofIndian Standards,after the draft finalized by the Timber and Timber Stores Sectional Committee had been approved by the Civil Engineering Division Council. Thestandard wasfirstpublishedin1968andcoveredthemethodsforthelaboratorytestingofwoodpreservatives against fungi. Details ofpreservatives, methods ofpreservative treatment oftimber, etc, have been covered in IS401 :2001 'Preservation oftimber - Codeofpractice (fourth revision)'. Basedontheexperience gained in the use ofthe standard, the first revision ofthe standard was brought out in 1993, additionally incorporating Gloeophyllum trabeum (Pers.ex. Fries) Murr.as atest fungiforpreparation oftest culture. In its present revision, the standard has been brought out in two parts in view ofrequests for incorporation of method oflaboratory testing ofwood preservatives against borers (powder post beetles). The other part ofthe standard is: IS4873 (Part 2) :2008 Part 2 Determination ofthreshold values ofwood preservatives against borers (powderpostbeetles) The composition ofthe Committee responsible forthe formulation ofthisstandard isgiven inAnnex A. For the purpose of deciding whether a particular requirement ofthis standard is complied with, the final value,observed orcalculated, expressingtheresultofatestoranalysis,shall berounded offinaccordance with IS2 : 1960'Rulesforrounding offnumericalvalues(revised)'. Thenumberofsignificantplacesretained inthe rounded offvalue should be thesame asthatofthespecified value inthisstandard. IS 4873(Part1):2008 Indian Standard METHODS OF LABORATORY TESTING OF WOOD PRESERVATIVES AGAINST FUNGI AND BORERS (POWDER POST BEETLES) PART 1 DETERMINATION OF THRESHOLD VALUES OF WOOD PRESERVATIVES AGAINST FUNGI ( Second Revision) 1 SCOPE 2.3 Leaching Procedure This standard (Part I) lays down the method for Theblocksshallbekeptinbeakersandweigheddown the laboratory determinatio of threshold value of with glass weights. Distilled water about 9 times wood preservatives against fungi by means of soil the volume ofthe blocks shall be poured into the block and Kolle flask methods. beakers. Theblocksshallberemovedfromthebeakers after aperiod of2 h. 2 SOIL BLOCK METHOD 2.4TreatmentProcedure 2.1 Principle The blocks, kept in a beaker under a weight to Blocks of wood are impregnated with different prevent floating, shall be placed in a'desiccator concentration of preservatives, and after selected connected to a manometer and a suction pump. A periodofweathering,theyareexposed totheactionof partial vacuum (60 mm mercury) shall be created in one or more wood destroying fungi. The minimum the desiccator for 30 min. The treating solution amount of preservative that completely protects the prepared just prior to itsuse shall be poured into the impregnated blocks against decay by a given test globe of the separating funnel with its stem fungus is defined as the threshold retention for that extending into the beaker containing the blocks. The organism. The failure to protect against decay is preservative solution shallthen berun intothe beaker determined bytheamount ofweight lossinthetreated completely covering the blocks. The vacuum shall woodblock. then be released. The beaker will be taken out and covered with a lid to prevent the evaporation ofthe 2.2 Preparation ofTest Sample preservative solution. The blocks shall be allowed to 2.2.1 Thetestblocksaswellasthefeederblocksshall remain for 30 min and then taken out and weighed be made from all sapwood portion of chir (W ) immediately after wiping the excess of 2 (Pinus roxburghii) and mango (Mangifera preservative. The mass of the treating solution indica), free from knots, mould and stain. The test absorbed (G)shallbe(W - WJ 2 blocks shall be made ofsizes 19 mm x 19 mm x 2.5 Calculation ofRetention Value 19mm with a 3.2 mm central hole on the tangential face and the feeder blocks 4 mm x 19mm x 35 mm The amount of preservative solution absorbed by along the length ofthe grain. block (retention value in g/cm') shall be calculated as follows: 2.2.2 The blocks shall then be dried in an oven at IOOeetoI05ee toaconstantmass(WJ Twelveblocks Ge Retention (R) = g/cm' (this may be shall be treated with each concentration of the 100 V converted to the preservative. Leaching shall start 3 days after units of kg/rn') treatment ofthe blocks with oil-type preservatives and 14 days after treatment with water-borne where type preservatives. Out ofthe 12 treated blocks, 6 blocks shall beexposed for 14days at50ee except G= mass ofthe treating solution absorbed by for 2 h period on each ofthe first nine days, when block(W2- WI)' ing; they shall be leached at room temperature. Six C= massofthe preservative present in 100gof leached and six unleached test blocks shall be conditioned at 30ee and 70 ± 4 percent relative thetreating solution, ing; and humidity. V= volumeofthetest block, inem'. IS 4873 (Part 1) :2008 The treated blocks shall then be conditioned at 300e blocks with cross-section face down on feeder blocks and70±4percentrelativehumiditytoaconstantmass, inpreviously prepared test bottles. WJ• 2.9 Incubation and Duration ofTest 2.6 PreparationofSoil CultureBottles The bottles containing the test blocks shall be Sifted (sieved) air dried garden soil amounting to placed in an incubator at 25 ± loe and relative 125 g with pH between 5.0 and 7.0 shall be filled humidity70±4 percentand kept there for a periodof (compacted by tapping) in (237 ml) aluminium 12weeks. screwing capped bottles. Distilled water is added to this so as to obtain 130 percent ofwater holding Atthe endofthe incubationperiodthe blocksshall be capacity of soil in test bottles. Two feeder blocks removed from the culture bottles, cleaned of the are then kept on the surface ofthe soil, ofthe size adhering mycelium, taking care not to remove the mentioned above. Sterilize the prepared bottles splintersofthe wood,and weigh them immediately if with caps loosened at 0.1 Nzmm' for 60 min on two the moisture in the blocks is to be determined. The consecutivedays. blocks shall be dried inthe warm air ofthe laboratory 2.7 PreparationofTest Culture and then conditioned (30°C and relative humidity 70 ±4 percent)to aconstantweight(W4). After the sterilized culture bottles are thoroughly cooled, cut the fungus inoculum (see 2.7.1) 2.10 Calculation ofMass Loss approximately 10 mm? from a not more than Percentage mass loss will be calculated from the 3-week old culture and place on the edge of the feeder blocks. Incubate the inoculated bottles with conditioned mass of the blocks before and after slightly loosened lids at 27°e ± loe and 70 ± 4 testing. percent relative humidity for approximately 3 weeks. The bottles are then ready to receive Mass loss. percent x 100 the test blocks. 2.7.1 The test fungi which are resistant to where antiseptics, grow quickly and rapidly cause a loss in weight oftest timber, shall be chosen. The test WJ =' conditioned mass of the block before test, and fungi given in 2.7.1.1 and 2.i.~.2 generally satisfy these factors. W4 =' conditionedmass ofthe blockaftertest. 2.7.1.1 For conifers 2.11 Threshold Retention a) Lentinus lepideus Fr. particularly tolerant to The purpose of the test is to determine the creosote or mixture containing creosotes; minimum amount ofpreservative that is effective in and preventing decay, under the condition oftest, by b) Poria moniticola Murr. particularly tolerant a particular fungus. The amount of preservative 10 to copper and zinc compounds. terms ofkg/m' ofwood is referred to as 'threshold retention'. The 'threshold value' is determined by 2.7.1.2 Fornon-conifers estimating the point at which percentage weight a) Coriolus versicolor (L. ex Fr.) or Pycnoporus loss not exceeding 5 percent, caused by decay sanguineus (L.ex Murr.), and occurs. b) Gloeophyllum trabeum (Pers. ex Fries) Murr. 3 ALTERNATIVE METHOD AGAR-BLOCK (KOLLE-FLASK) METHOD NOTE- Some strainsofthis fungus are resistant to high concentrationofarsenic. 3.1 Preparation ofTest Blocks 2.7.2 The tolerant fungus shall always be included in testing any preservative. Other important wood The test blocks shall be made from all sapwood rotting fungi may be substituted for the non portion of chir (Pinus roxburghii'i and mango tolerant organisms in special investigations. (Mangifera indica), free from knots and moulds. The test blocks shall be made ofthe size 50 mm x 2.8 Infection ofTest Blocks 25 mm x 15 mm along the length ofthe grain. Before putting the test blocks in the culture bottles, 3.2 ConditioningofTest Blocks place them by retention groups into tightly fitting containers and steam at loooe for 20 min at The procedure shalI be the same as given atmospheric pressure. After cooling, place the test in 2.2.2. 2 IS 4873 (Part I) :2008 3.3 Treatment Procedure 3.6 InfectionofTest Blocks The procedure shall be the same as given in 2.3 and Theblocksshallbeexposedtofungalattackbyplacing themaseptically intheflaskinwhichthereareactively 2.4. growing cultures ofthetest fungi. The blocks should 3.4 Test Fungi beplacedonringsorframesmadeofthinglassrod, so that the blocks come in contact with the aerial The test fungi shall be the same as given in2.7.1. mycelium ofthefungusandnotthemedium itselfinto whichsomeofthe preservative might otherwise leach 3.5 Medium for GrowingCulture out. Notmorethantwoblocks shallbeplaced ineach flask. Sterile watershould beadded aseptically inthe Anutrient medium consistingof20gofagarand 20g neck ofthe flask to maintain the ideal condition for ofmalt extract in a litre ofdistilled water shall be test. prepared. Pour about 60 ml ofthis into each flask (Kolle-flask),then plug with cottonwool andsterilize 3.7 Incubation andDuration ofTest byautoclavingat0.\ Nzmrn' (120°C)for The procedure shall bethe same asgiven in2.9. aperiod of20 min. After sterilization,the flask shall belaid flatsothat the medium isretainedbythe ridge 3.8 CalculationofMass Loss in the neck ofthe flask. The medium is inoculated withtest fungus within 6days after preparationofthe The procedureshall be the same asgiven in2.10. flask. Sterile watershould bepouredover the cotton 3.9 Threshold Retention wool pad inthe neck ofthe flask in order to maintain the ideal conditions for fungal growth in the flask. The procedure shall be thesame asgiven in2.11. ANNEX A (Foreword) COMMITTEE COMPOSITION Timberand Timber Stores Sectional Committee, CED 9 Organization Representativets) Inpersonalcapacity(2989/D,12thMainHAL/IStage, SHRJSIIYAMSUNDER(ChairmJlll) Bangalore560008) AndamanChamberofCommerce&Industries,Kolkata SHRJHARISHKHArrAN BambooandCaneTechnologyCentre,Guwahati PROJECTCOORDINATOR BambooSocietyoflndia, Bangalore SHRJA.C.uKsHMANA DRK.A.KUSHAUJ'PA(Alterna/e) CentralBuildingResearchInstitute,Roorkee DIRECTOR DirectorateGeneralofCivilAviation,NewDelhi DIRECTORGENElW. DirectorateGeneralofSupplies&Disposals,NewDelhi D!REcroRGENEJW. DirectorateofStandardization,NewDelhi DIRECTOR Engineer-in-Chief'sBranch.ArmyHeadquarters.NewDelhi SHIUC.R.SAHA SHRIN.B.SHEU.R(Altemate) FederationoflndianPlywood& PanelIndustry,NewDelhi SHIUSAlIANBHAJANKA SECRETARY[Alternate) ForestDepartment,Raipur PRINCIPALCHIEFCONSERVA"lOROFFORESTS ForestDepartment,Bhopal PRINcIPALCIIIEFCoNsBtvATOROfFORESTS ForestResearchInstitute.DehraDun DRS.S.NEG! DRVIMALK01lllVAL(Altemate) IndianAcademyofWoodScience,Bangalore PREsmerr IndianCouncilofForestryResearchandEducation,DehraDun DIRECTORGENEJW. IndianPlywoodIndustriesResearch&TrainingInstitute,Bangalore DIRECTOR SHRIS.PADMANAIlHAN(Alternate) 3 IS 4873(Part 1):2008 Representativets) Organization InstituteofWoodScience&Technology,Bangalore DlRECfOR DRR.V.RAO(Alternate) KeralaForestResearchInstitute,Peechi DlRECfOR DRGNANAHARAN(Alternate) KuttyFlushDoors& FurnituresCoPvtLtd,Chennai SHRJK.SANKARAKJuSIINAN COLY.G.KRISHNAN(Alternate) MinistryofDefence,Gwalior DlRECfOR SHRIH.C.PAr-,.-(Alternate) MinistryofEnvironment& Forest,NewDelhi DEPlIlYINSPECfORGENERALOfFoREST RubberBoard,Konayarn DrRECfOR KarnatakaStateForestIndustriesCorporationLtd, Bangalore SHRJV.P.HlREMATIi SHRIS.SHrVAPRAKAsH(Alternate) TimberDevelopmentAssociationofIndia,DehraDun SECRETARY \"lMCOLimited,Mumbai CHIEFExEClJ11VEOmCER Inpersonalcapacity(606B,IBlock.IIIStage,UVCELayout, SHRJK.DAMODARAN JVOC Road. Basaveshwaranagar; Bangalore560079, Karnataka) BISDirectorateGeneral SHRIA.K.SAmI,Scientist'F'& Head(CEO) [RepresentingDirectorGeneral(Ex-officio)] MemberSecretary SHRIJ.RoyCHOWDHURY Scientist'E'(CEO),BIS Timber Terminology,Conversion, Seasoning, Preservation, Grading andTesting Subcommittee, CED 9 : 1 Organization Representattvets) InstituteofWoodScience&Technology,Bangalore DRRVRAO(Convener) AndamanTimberIndustries,Kolkata SHRIHARISHKHMrAN ASCUHicksonLimited,Kolkata SHRIRxnvAGARWAL SHRIJ.BASu(Alternate) BoraxMorarji,Coil SHRIH.1.KAPADIA SHRIS.RANGARAJAN(Alternate) BuildingMaterialsTechnologyPromotionCouncil,NewDelhi REPRESENTAllVE CentralBuildingResearchInstitute,Roorkee DIRECfOR SHRIB.S.RAWAT(Alternate) CentralMiningResearchStation(CSIR),Dhanbad DIRECfOR ControllerateofQualityAssurance,Kanpur DIRECfOR DirectorateGeneralofCivilAviation,NewDelhi OIRECfORGENERAL DirectorateGeneralofSupplies&Disposals,NewDelhi OIREcroRGENERAL DirectorateofStandardization,NewDelhi DIRECfOR FederationoflndianPlywood&PanelIndustry,NewDelhi SHRIJAYDEEPCHIll.ANGIA SECRETARY(Alternate) ForestDepartment,Bangalore PRINCIPALCIUEFCONSERVATOROFFORESTS ForestDepartment,Gandhinagar PRl!'iCIPALCIIlEFCONSERVATOROFFoRESTS ForestDepartment,DehraDun PRINCIPALCHIEFCoNSERVATOROFFORESTS ForestDepartment,GovernmentofChhattisgarh,Raipur PRINCIPALCHIEFCONSERVATOROFFORESTS ForestResearchInstitute(ForestProductsDivision),DehraDun SHRIV.K.JAm SHIUVIMALKOrnrYAL(Alternate) ForestResearchInstitute(PathologyDivision),DebraDun DRA.N.SHUKLA DRN.K.S.HARSH(Alternate) IS 4873(Part 1):2008 Organization Representativets) ForestResearchInstitute(SystemaicBotanyBranch),DehraDun DRS.A.S.BISWAS DRSMERCHAND(Alternate) ForestResearchInstitute(WoodAnatomy),DehraDun DR(MRS)S.4NGrrAGUPTA DRP.K.P.4NDEV(Alternate) ForestResearchInstitute(WoodSeasoning),DehraDun SHRINIRMALUPIUTI DRKISIlANKUMAR(Alternate) ForestResearchInstitute(WoodPreservation),DehraDun DRSADHANATRlPAl1ll SIIRIAzMALSAMANI(Alternate) GurditInstitutePvtLimited,Dharwar SHRIYASHKAJ..-'oNSINGH HimachalPradeshStateForestCorporation,Shimla M.4NAGINGD!REcroR ExEcunvEDnlEcroR(Alternate) IndianCouncilofForestryResearchandEducation,DehraDun SHRIB.K.BHATIA SHRIS.K.KOHLI(Alternate} IndianInstituteofTechnology,NewDelhi SHRIG.S.BENIPAL IndianPlywoodIndustriesResearch&TrainingInstitute,Bangalore SHRIK.SHYAMASUNDER SIIRIS.Z.M.KAMAL(Alternate) IndianPlywoodIndustries.Research&TrainingInstitute,Bangalore SHRJK.C.MAlllEWS SIIRIM.VENUGOPALNAIDU(Alternate) IndianPlywoodIndustriesResearch&TrainingInstitute,Bangalore SHRIS.PADM.4NABHAN SHRJS.Z.M.KAMAL(Alternate) IndianRubberWoodTaskForce,Kottayam SHRJC.BHASKARNAYAR SIIRIV.J.MA1lIEW(Alternate) InstituteofWoodScience&Technology(WoodProperties&Uses REPRESeIT!JlVE Division),Bangalore KarnatakaStateForestIndustriesCorporation,Bangalore SHRIV.P.HIREMAllf SHRIS.SHIVAPRAKASH(Alternate) KeralaForestResearchInstitute,Peechi DIRECTOR REPRESeITATIVE(Alternate) KuttyFlushDoors&FurnituresCoPvtLtd,Chennai SHRIK.S.4NKARAKRIsHNA COLY.G.KRISHNAN(Alternate) MadhyaPradeshRajyaVanVikasNigamLtd,Bhopal SHRJA.K.DUBEY MinistryofEnvironment&Forests,NewDelhi DRBIPINBEHARJ MinistryofRailways(RepresentedbyROSa),NewDelhi DIRECTORGENERAl. NationalTestHouse,Kolkata DIRECTOR(PHYSICAL) OfficeofDevelopmentCommissioner(Handicrafts),NewDelhi 0EPurYDIRECJOR RegionalResearchLaboratory,Jorhat DIRECJOR RubberResearchInstituteofIndia,Kottayarn DIRECIUR SivakasiChamberofMatchIndustries,Sivakasi REPRESeITAllVE SouthernVeneers&WoodWorksLtd,Tillicherry SHRJP.K.Hxarss U.P.ForestCorporation,Lucknow SEl'IlORMANAGEIl Inpersonalcapacity(CloAmericanConnexion, 214,PhaseII DRSAnsHKUMAR VasantVihar; DehraDun248006, Uttaranchaly 5

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Most books are stored in the elastic cloud where traffic is expensive. For this reason, we have a limit on daily download.