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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.

!"#$% '(%)

!"# $ %& #' (")* &" +#,-.Satyanarayan Gangaram Pitroda

Invent a New India Using Knowledge

/0)"1 &2 324 #' 5 *)6Jawaharlal Nehru

Step Out From the Old to the New

7"#1&"8+9&"), 7:1&"8+9&")Mazdoor Kisan Shakti Sangathan

The Right to Information, The Right to Live

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June 8

IS 4873 Part 1 : 2008J17?rfJ 2 JOf j 3lR tn\3 5X qfr

wan cfi lffre:rur qfr 1fTTJ 1 cr>4 en c l f ~ qft ~ l t S Ci 8 ? y Terur Indian t nd rd

METHODS OF LABORATORY TESTING OFWOOD PRESERVATIVES AGAINST FUNGI ANDBORERS POWDER POST BEETLES

PART 1 DETERMINATION OF THRESHOLD VALUES OFWOOD PRESERVATIVES AGAINST FUNGI Second Revision

ICS 71.100.50

c SIS 2008URE U OF IND I N S T ND RDSMANAK SHAVAN 9 BAHADUR SHAH ZAFAR M ARG

NEW DELHI 11 2Price Group 3

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Timber and Timber Stores Sectional Committee, CED 9

FOREWORDThis Indian Standard Part I) Second Revision) was adopted by the Bureau Indian Standards, after the draftfinalized by the Timber and Timber Stores Sectional Committee had been approved by the Civil EngineeringDivision Council.The standard was first published in 1968 and covered the methods for the laboratory testing wood preservativesagainst fungi. Details preservatives, methods preservative treatment timber, etc, have been covered inIS 401 : 2001 Preservation timber - Code practice fourth revision) . Based on the experience gained inthe use the standard, the first revision the standard was brought out in 1993, additionally incorporatingGloeophyllum trabeum Pers. ex. Fries) Murr. as a test fungi for preparation test culture.In its present revision, the standard has been brought out in two parts in view requests for incorporation method laboratory testing wood preservatives against borers powder post beetles). The other part thestandard is:

IS 4873 Part 2) : 2008 Part 2 Determination threshold values wood preservatives against borers powder post beetles)The composition the Committee responsible for the formulation this standard is given in Annex A.For the pu rpo se dec iding whether a particular requirement this standard is complied with, the finalvalue, observed or calculated, expressing the result a test or analysis, shall be rounded in accordance withIS 2 : 1960 Rules for rounding numerical values revised) . The number significant places retained in therounded value should be the same as that the specified value in this standard.

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IS 4873 Part 1) : 2008Indian Standard

METHODS OF LABORATORY TESTING OFWOOD PRESERVATIVES AGAINST FUNGI ANDBORERS POWDER POST BEETLES)

P RT DETERMIN TION OF THRESHOLD V LUES OFWOOD PRESERV TIVES G INST FUNGI

Second Revision

The amount of preservative solution absorbed byblock retention value in g/cm ) shall be calculatedas follows:

G = mass of the treat ing solution absorbed byblock W2 - WI in g;C = mass of the preservative present in 100 g ofthe treating solution, in g; and volume of the test block, in em .

2.3 Leaching ProcedureThe blocks shall be kept in beakers and weighed downwith glass weights . Distill ed wa te r a bou t 9 timesthe volume of the blocks shall be poured into thebeakers. The blocks shall be removed from the beakersafter a period of2 h.2.4 Treatment ProcedureThe b lo ck s, kept in a beaker under a weight toprevent f lo at ing , sha ll be placed in a desiccatorconne cted to a manometer and a suction pump . Apartial vacuum 60 mm mercury) shall be created inthe desiccator for 30 min . The treating solutionprepared just prior to its use shall be poured into theglobe of the separating funnel with its stemextending into the beaker containing the blocks. Thepreservative solution shall then be run into the beakercompletely covering the blocks . The vacuum shallthen be released. The beaker will be taken out andcovered with a lid to prevent the evaporation of thepreservative solution. The blocks shall be allowed torema in for 30 min and then taken out and weighedW2 immediately after wiping the excess ofpreservative . The mass of the treating solutionabsorbed G) shall be W2 - WJ2.5 Calculation of Retention Value

1 SCOPEThis standard Part I) lays down the method forthe laboratory det erminatio of threshold value ofwood preservatives against fungi by means of soilblock and Kolle flask methods .2 SOIL BLOCK METHOD2.1 PrincipleBlocks of wood are impregnated with differentconcentration of preservatives, and after selectedperiod of weathering, they are exposed to the action ofone or more wood destroying fungi. The minimumamount of preservative that completely protects theimpr egna te d blocks a gainst de ca y by a give n testfungus is defined as the threshold retention for thatorganism . The failure to p ro te ct a ga ins t de cay isdetermined by the amount of weight loss in the treatedwood block.2.2 Preparation of Test Sample2.2.1 The test blocks as well as the feeder blocks shallbe made from all sapwood portion of chirPinus roxburghii and mango Mangiferaindica , free from knots , mould and stain . The testblocks shall be made of sizes 19 mm x 19 mm x19 mm with a 3.2 mm central hole on the tangentialface and the feeder blocks 4 mm x 19 mm x 35 mmalong the length of the grain.2.2.2 The blocks shall then be dried in an oven atI ee to I05ee to a constant massWJ Twelve blocksshall be treated with each concentration of thepreservative. Leaching shall start 3 days aftertreatment of the blocks with oil-type preservativesand 14 days after treatment with water bornetype preservatives. Out of the 12 tre ate d blocks,6 blocks shall be exposed for 14 days at 50ee exceptfor 2 h period on each of the first nine days, whenthey shall be leached at room temperature. Sixleached and six unleached tes t b locks sha ll becondit ioned at 30 e e and 70 4 percent relativehumidity.

Retention R =

where

Ge100 V g/cm t his may beconverted to theunits of kg/rn

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IS 4873 Part 1) : 2008

3 ALTERNATIVE METHOD AGAR-BLOCK KOLLE-FLASK) METHOD

Percentage mass loss will be calculated from theconditioned mas s of the blocks before and aftertesting.

blocks with cross-section face down on feed er blocksin previously prepared test bottles.2.9 Incubation and Duration of Test

x 100ass loss. percentwhere

The purpose of the test is to determine theminimum amount of p reserv ativ e that is eff ective inpreventing decay, under the condition of test, bya p ar ticu lar f un gus . The amount of preservative 10terms of kg/m of wood is referred to as thresholdretention . The threshold value is determined byestimating the point at which percentage weightloss not exceeding 5 pe rcent, caused by decayoccurs.

The bot tles containing the test blocks shall beplaced in an incubator at 25 loe and relativehumidity 70 4 perc ent and kept t he re for a pe ri od of12 weeks.At the end of the incubation period the blocks shall beremoved from the cul ture bot tles , cleaned of theadhering mycelium, taking care not to remove thesplinters of the wood , and weigh them immed iately ifthe moisture in the blocks is to be det ermined. Theblocks shall be dried in the warm air of the laboratoryand then con dition ed 3 0 C and r elativ e h umid ity 70 4 percent) to a constant weight W4 ) .2.10 Calculation of Mass Loss

WJ = conditioned mass of the b loc k b ef or e test,andW4 = conditioned mass of the block after test.

2.11 Threshold Retention

3.1 Preparation of Test BlocksThe test blocks shall be made from all sapwoodportion of chir Pinus roxburghii i and mango Mangifera indica), free from knots and moulds.The test blocks shall be ma de of the size 50 mm x25 mm x mm along the length of the grain.3.2 Conditioning of Test BlocksThe procedu re shalI be the same as givenin 2.2.2.

The treated b lo ck s shall then be con ditioned at 30and 70 4 percent relative humidity to a constant mass,WJ 2.6 Preparation of Soil Culture BottlesS if ted s ieved) air d ri ed g ar de n soil a mou nt in g to125 g with be tw ee n 5.0 and 7.0 shall be filled compacted by tapping) in 237 ml) aluminiumscrewing capped bottl es. Di sti ll ed wat er is a dde dto this so as to obtain 130 percent of water holdingcapacity of soil in test bottles. Two feeder blocksare then kept on the surface of the soil, of the sizementioned above. Sterilize the prepared bottleswith caps loosened at 0.1 zmm for 60 min on twoconsecutive days.2.7 Preparation of Test CultureA fter the sterilized cultu re b ottles are tho ro ug hlycooled, cut the fungus inoculum see 2.7.1approximately 10 mm? from a no t more than3-week old culture and place on the edge of thefeeder blocks. Incubate the inoculated bottles withslightly loosened lids at 27e loe and 70 4percent relative humidity for approximately3 weeks. The bottles are then ready to receivethe tes t blocks.2.7.1 The test fungi which are resistant toant iseptics, grow qui ckl y and ra pi dl y c ause a lossin weight of test timber, shall be chosen. The testfungi gi ven in 2.7.1.1 and generally satisfythese factors .

NOT E - Some strains of this fungus are resistant to highconcentration of arsenic.

2.7.1.1 For conifersa) Lentinus lepideus Fr. particularly tolerant to

creosote or mixture containing creosotes;and

b) Poria moniticola Murr. particularly tolerantto copper and zinc compounds.2.7.1.2 For non-conifers

a) Coriolus versicolor L. ex Fr. or Pycnoporussanguineus L.ex Mu rr.), andb) Gloeophyllum trabeum Pers. ex Fries) Murr.

2.7 .2 The toler an t fungus shall always be includedin t es ti ng any pre se rva ti ve . O th er im porta nt woodrotting fungi may be substituted for the nontolerant organisms in special investigations.2.8 Infection of Test BlocksBef or e p utting the test blocks in the culture bottles,place t he m by r et ent ion g ro up s into t ight ly fittingcontainers and steam at loooe for 20 min atatmospheric pressure. After cooling, place the test

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3.3 Treatment ProcedureThe procedure shall be the same as given in 2.3 and2.4.3.4 Test FungiThe test fungi shall be the same as given in 2.7.1.3.5 Med iu m for G ro wi ng CultureA nutrient medium consisting of20 g of agar and 20 gof malt extract in a litre of distilled water shall beprepared. Pour about 60 ml of this into each flask(Kolle-flask), then plug with cotton wool and sterilizeby autoclaving at 0. \ Nzmrn 120C) fora period of 20 min. After sterilization, the flask shallbe laid flat so that the medium is retained by the ridgein the neck of the flask. The medium is inoculatedwith test fungus within 6 days after preparation of theflask. Sterile water should be poured over the cottonwool pad in the neck of the flask in order to maintainthe ideal conditions for fungal growth in the flask.

IS 4873 Part I) : 20083.6 Infection of Test BlocksThe blocks shall be exposed to fungal attack by placingthem aseptically in the flask in which there are activelygrowing cultures of the test fungi. The blocks shouldbe placed on rings or frames made of thin glass rod, sothat the blocks come in contact with the aerialmycelium of the fungus and not the medium itself intowhich some of the preservative might otherwise leachout. Not more than two blocks shall be placed in eachflask. Sterile water should be added aseptically in theneck of the flask to maintain the ideal condition fortest.3.7 Incubation an d Duration of TestThe procedure shall be the same as given in 2.9.3.8 Calculation of Mass LossThe procedure shall be the same as given in 2.10 .3.9 Threshold RetentionThe procedure shall be the same as given in 2.11.

ANNEX AForeword

COMMITTEE COMPOSITIONTimber and Timber Stores Sectional Committee, CED 9

OrganizationIn personalcapacity 2989/D, 12th Main HAL /I Stage,

Bangalore 560008AndamanChamberof Commerce Industries KolkataBambooand CaneTechnologyCentre, GuwahatiBambooSocietyoflndia, BangaloreCentralBuildingResearchInstitute, RoorkeeDirectorateGeneralof CivilAviation NewDelhiDirectorateGeneralof Supplies Disposals,NewDelhiDirectorateof Standardization,NewDelhiEngineer-in-Chief s Branch. ArmyHeadquarters. NewDelhiFederationoflndian Plywood Panel Industry NewDelhiForestDepartment,RaipurForestDepartment,BhopalForestResearchInstitute. DehraDunIndianAcademyof Wood Science,BangaloreIndianCouncil of ForestryResearchand Education,DehraDunIndianPlywoodIndustriesResearch TrainingInstitute,Bangalore

3

RepresentativetsSHRJSIIYAM SUNDERChairmJlll

SHRJHARISH K rr NPROJECT COORDINATORSHRJA C uKs M N

D R K . A KUSHAUJ PA Alterna/eDIRECTORDIRECTOR GENElW.D REcroR GENEJW.DIRECTORSHIU C. R S H

SHRI N. B. SHEU.R AltemateS U S lI N H J NK

SECRET RY [AlternatePRINCIPAL CHIEF CONSERVA lOROF FORESTSPRINcIPAL CIIIEF CoNsBtvATOROf FORESTS S . S. NEG

DR VIMAL K01lllVAL AltematePREsmerrDIRECTORGENEJW.DIRECTOR

SHRI S. P DM N IlH N Alternate

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IS 4873 Part 1 : 2008

Organ izationInstituteof WoodScience Technology, BangaloreKeralaForestResearchInstitute PeechiKuttyFlushDoors Furnitures Co Pvt Ltd, ChennaiMinistryof Defence GwaliorMinistryof Environment Forest NewDelhiRubberBoard,KonayarnKarnatakaState ForestIndustriesCorporation Ltd, BangaloreTimber Development Association of India,DehraDun\ lMCO Limited,MumbaiInpersonal capacity 606 B, I Block. III Stage, UVCE Layout,

JVOC o d. Basaveshwaranagar; Bangalore 5600 79,Karnataka

BISDirectorateGeneral

RepresentativetsDlRECfOR

DR R. V RAOAlternateDlRECfOR

DR GNAN AHARAN AlternateSHRJK SANKARA KJuSIINANO Y G KRISHNAN Alterna te

DlRECfORSHRI H C. P r ,- Alternate

DEPlIlY INSPECfOR GENERAL Of FoRESTDrRECfORSHRJV P. HlREMATIi

SHRI S. SHrV PR K sH AlternateSECRET RYHIEF ExEClJ11VE Om ERSHRJK DAMODARAN

SHRI A. K S mI Scientist ' F' Head(CEO)[RepresentingDirectorGeneral Ex-officio ]

Member SecretaryS R J.Roy CHOWDHURYScientist 'E' (CEO), BIS

Timber Terminology, Conversion, Seasoning, Preservation,Grading and Testing Subcommittee, CED 9 : 1

OrganizationInstitute of WoodScience TechnologyBangaloreAndamanTimberIndustries, KolkataASCU HicksonLimited, KolkataBoraxMorarji,CoilBuildingMaterialsTechnologyPromotionCouncil, NewDelhiCentralBuildingResearchInstitute, RoorkeeCentralMiningResearchStation(CSIR),DhanbadControllerateofQualityAssurance, KanpurDirectorateGeneralof CivilAviation, NewDelhiDirectorateGeneralof Supplies Disposals,NewDelhiDirectorateof Standardization,NewDelhiFederationoflndian Plywood Panel Industry, NewDelhiForestDepartment,BangaloreForestDepartment,GandhinagarForestDepartment,DehraDunForestDepartmen, GovernmentofChhattisgarh, RaipurForestResearchInstitute(ForestProductsDivision),DehraDunForestResearchInstitute(PathologyDivision) , DebraDun

RepresentattvetsDR RV RAO ConvenerSHRI H RISH KHMrANSHRI Rxnv AGARWAL

SHRI J. B Su AlternateSHRI H.1. K P DI

S R S R NG R J N AlternateREPRESENTAllVEDIRECfOR

SHRI B S RAWAT AlternateDIRECfORDIRECfOROIRECfOR GENER LOIREcroR GENER LDIRECfORS R J YDEEP CHIll NGI

SECRETARYAlternatePRINCIPAL IUEF CONSERVATOR OF FORESTSPRl 'iCIPAL IIlEF CONSERVATOR OF FoRESTSPRINCIPAL HIEF oNSERVATOR OF FORESTSPRINCIPAL HIEF CONSERVATOR OF FORESTSSHRI V K J mSHIU VIM L KOrnrY L AlternateDR A N SHUKLDRN K S H RSH Alternate

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OrganizationForestResearchInstitute(Systemaic BotanyBranch), DehraDunForestResearchInstitute(WoodAnatomy), DehraDunForestResearchInstitute(WoodSeasoning),DehraDunForestResearchInstitute(WoodPreservation) DehraDunGurditInstitutePvt Limited, DharwarHimachalPradeshState ForestCorporation, ShimlaIndianCouncilof ForestryResearchand Education, DehraDunIndianInstituteofTechnology, NewDelhiIndianPlywoodIndustriesResearch Training Institute BangaloreIndianPlywoodIndustries.Research TrainingInstitute, BangaloreIndianPlywoodIndustriesResearch TrainingInstitute, BangaloreIndianRubberWoodTaskForce,KottayamInstituteofWoodScience Technology (WoodProperties Uses

Division), BangaloreKarnatakaState ForestIndustriesCorporation, BangaloreKeralaForestResearchInst itute,PeechiKuttyFlushDoors FurnituresCo Pvt Ltd, ChennaiMadhyaPradeshRajya VanVikasNigamLtd, BhopalMinistryof Environment Forests,NewDelhiMinistryof Railways(RepresentedbyROSa),NewDelhiNationalTestHouse,KolkataOfficeof DevelopmentCommissioner(Handicrafts), NewDelhiRegionalResearchLaboratory, JorhatRubberResearchInstituteofIndia, KottayarnSivakasiChamber MatchIndustries,SivakasiSouthernVeneers WoodWorksLtd,TillicherryU.P. ForestCorporation, LucknowIn personalcapacity Clo American Connexion, 214,Phase II

Vasant ihar Dehra Dun 248006, Uttaranchaly

5

IS 4873 Part 1 : 2008

RepresentativetsDR S. A S. BISWASDRS ME R C H A ND AlternateDR MRS) S.4NGrrA GUPTA

DR P.K. P.4NDEV AlternateS HR I NIRMAL UP IUTI

DR KISIlAN KUMAR AlternateDR SADHANA TRlPAl1ll

SIIRI AzMAL SAMANI AlternateSHRI YASH KAJ..- oN SINGHM.4NAGING D REcroRExEcunvE DnlEcroR AlternateSHRI B. K. BHATIA

SHRI S. K. KOHLI Alternate}SHRI G.S. BENIPALSHRI K SHYAMA SUN ER

SIIRI S. Z. M. KAMAL AlternateSHRJ K C. MAlllEWS

SIIRI M. VENUGOPAL NAIDU AlternateSHRI S. PADM.4NABHAN

SHRJ S.ZM. KAMAL AlternateSHRJ C. BHASKAR NAYAR

SIIRI V. J. MA1lIEW AlternateREPRESeIT JlVE

SHRI V. P.HIREMAllfSHRI S. SHIVA PRAKASH Alternate

DIRECTORREPRESeITATIVEAlternate

SHRI K S NKARA KRIsHNACOL Y G. KRISHNAN Alternate

SHRJ A K DUBEYDR BIPIN BEHARJDIRECTOR GENERAl.DIRECTOR PHYSICAL)0EPurY DIRECJORDIRECJORDIRECIURREPRESeITAllVESHRJ P K HxarssSEl IlOR MANAGEIlDRSAnsH KUMAR

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