1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS 5743:2000 ISO 3402:199
2、9 ICS 65.160 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Tobacco and tobacco products Atmosphere for conditioning and testingThis British Standard, having been prepared under the direction of the Consumer Products and Services Sector Committee, was published under the auth
3、ority of the Standards Committee and comes into effect on 15 April 2000 BSI 04-2000 ISBN 0 580 34721 4 BS 5743:2000 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard reproduces verbatim ISO 3402:1999 and implements it as the UK national standard. It s
4、upersedes BS 5743:1991 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee AW/40, Tobacco and tobacco products, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquirie
5、s on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British
6、 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 Electronic Catalogue. A British S
7、tandard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cov
8、er, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 4, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.Referencenumber ISO3402:1999(E) INTERNATIONAL STANDARD ISO 3402 Fourthedition 1999-12-15
9、 Tobaccoandtobaccoproducts Atmosphereforconditioningandtesting Tabac et produits du tabac Atmosphre de conditionnement et dessai BS 5743:2000ii BS 5743:2000 iii Foreword ISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISO memberbodies).Theworkofprep
10、aringInternationalStandardsisnormallycarriedoutthroughISOtechnical committees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas therighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,in liaisonwithISO,alsotakepartinthework.I
11、SOcollaboratescloselywiththeInternationalElectrotechnical Commission(IEC)onallmattersofelectrotechnicalstandardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/IECDirectives,Part3. DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesf
12、orvoting. PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote. AttentionisdrawntothepossibilitythatsomeoftheelementsofthisInternationalStandardmaybethesubjectof patentrights.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights. InternationalSta
13、ndardISO3402waspreparedbyTechnicalCommitteeISO/TC126, Tobacco and tobacco products. Thisfourtheditioncancelsandreplacesthethirdedition(ISO3402:1991),whichhasbeeneditoriallyrevised. BS 5743:2000iv Introduction During1988and1989,collaborativestudiesbytaskforcescomposedofmembersoftheCooperationCentrefo
14、r ScientificResearchRelativetoTobacco(CORESTA),“Smoke“and“Technology“groups,havebeenmadeonthe repeatabilityandreproducibilityoftestsontobaccoandtobaccoproducts. ThesestudieshaveresultedinthepublicationofCORESTARecommendedMethodNo.21(seebibliographic reference1). Ithassincebeenfoundthat,inpractice,th
15、eprevioustolerancesonrelativehumidityforthetestatmospherewere difficulttoachieve. BS 5743:2000INTERNATIONALSTANDADR ISO2043:(9991)E1 TobaccoandtobaccoproductsAtmosphereforconditioning andtesting 1 Scope ThisInternationalStandardspecifiestheatmospherefortheconditioningandtestingofsamplesandtestpieces
16、of tobaccoandtobaccoproducts. Itisapplicabletotestsontobacco,tobaccoproducts,andmaterialsusedinthemanufactureoftobaccoproducts forwhichpriorconditioningisnecessary.Itisnotapplicableinthecaseoftestmethodsandtestconditions stipulatedinotherInternationalStandards(seebibliography). NOTE Atmospheresforco
17、nditioningandtestingforothertobaccoproducts(e.g.cigars,pipetobaccoorsnufftobacco)may differfromthosespecifiedinthisInternationalStandard.Ifrequiredseparatestandardswillbedrafted. 2 Termsanddefinitions ForthepurposesofthisInternationalStandard,thefollowingtermsanddefinitionsgiveninISO558:19804apply.
18、2.1 atmosphere ambientconditionsdefinedbyoneormoreofthefollowingparameters: temperature relativehumidity pressure ISO558:1980,definition2.1 2.2 conditioningatmosphere atmosphereinwhichasampleortestpieceiskeptbeforebeingsubjectedtotest NOTE1 Itischaracterizedbyspecifiedvaluesforoneormoreofthefollowin
19、gparameters:temperature,relativehumidity andpressure,whicharekeptwithintheprescribedtolerancesforagivenperiodoftime. NOTE2 Theterm“conditioning“referstotheoperationasawholedesignedtobringasampleortestpiece,beforetesting, intoaspecifiedconditioninrelationtotemperatureandhumidity,bykeepingitforagivenp
20、eriodoftimeintheconditioning atmosphere. NOTE3 Theconditioningcanbedoneeitherinthelaboratoryorinaspecialenclosuretermed“theconditioningchamber“, orinthetestchamber. NOTE4 Thechosenvaluesandperiodoftimedependonthenatureofthesampleortestpiecetobetested. NOTE5 AdaptedfromISO558:1980,definition2.2. 2.3
21、testatmosphere atmospheretowhichasampleortestpieceisexposedthroughoutthetest BS 5743:20002 NOTE1 Itischaracterizedbyspecifiedvaluesforoneormoreofthefollowingparameters:temperature,relativehumidity andpressure,whicharekeptwithintheprescribedtolerances. NOTE2 Thetestmaybecarriedouteitherinthelaborator
22、yorinaspecialchambertermed“thetestchamber“,orinthe conditioningchamber,thechoicedependingonthenatureofthetestpieceandonthetestitself.Forexample,closecontrolof thetestatmospheremaynotbenecessaryifthechangeofpropertiesofthetestpieceisinsignificantinthetestperiod. NOTE3 AdaptedfromISO558:1980,definitio
23、n2.3. 3 Atmosphere 3.1 Conditioningatmosphere Theconditioningatmosphereshallbeasfollows: temperature (22 1) C; relativehumidity(60 3)%. NOTE Whilstmonitoringequipmentmightindicatetherelativehumidityiswithinthe(60 3)%specification,thistolerance canbecomparablewiththeuncertaintyincalibrationoftheequip
24、ment. Thespecifiedtoleranceslistedabovedefinetheatmosphereimmediatelysurroundingthetestpiece.Therefore,the atmospheresurroundingthetestpieceshallbemaintainedatameantemperatureof22 Candameanrelative humidityof60%. 3.2 Testatmosphere Thetestatmosphereshallbethesameastheconditioningatmospherebutwiderto
25、lerancesarepermissibleas follows: temperature (22 2) C; relativehumidity(60 5)%. Theatmosphericpressureshallbemeasuredandincludedinthetestreportifitisoutsidetherange86kPato 106kPa. 4 Conditioning 4.1 Durationofconditioning Incurrentpractice,conditioningfor48husingaforcedairflowisgenerallyfoundtobesu
26、fficientforloose cigarettes.Thisconditioningtimecanbeinsufficientforcertainsamplesortestpieces,forexample,forpacketed cigarettesinbulkandwhenloosecigarettesareconditionedwithoutforcedairflow.Therefore,inallcases,it shouldbeverifiedthatequilibriumhasbeenproperlyattained(see4.2). Itisrecommendedthatth
27、eatmosphericrelativehumiditynearthesamplesortestpiecesbeverifiedbytheuseofa hygrometercalibratedwithtraceablestandards(fordetailsseeISO4677-15). Theairflowshouldbesufficienttoconditionloosecigarettesinthespecifiedperiod,butitshouldbenotedthat excessiveairflowmayresultinimproperconditioning. If,foran
28、yreason,testsamplesaretobekeptforlongerthan10daysbeforeconditioning,storethemintheoriginal packagingorinairtightcontainersjustlargeenoughtocontainthesample.Ifsamplesaretobekeptforlongerthan 3months,itisrecommendedthattheyarefrozenandstoredat,orbelow,16 Cuntilneeded. BS 5743:2000 3 4.2 Checkingofequi
29、librium Equilibriumshallbeconsideredtobeattainedwheneither a) therelativevariationofthemassofthesampleortestpiecesisnotgreaterthan0,2%in3h,or b) thesampleorthetestpieces,placedinaclosedcontainerofavolumesimilartothatofthesampleorthetest pieces,give(s)risetoarelativehumidityinthecontainerequaltothato
30、ftheconditioningatmosphere. NOTE SuitableapparatusforthemeasurementofrelativehumidityinthecontainerisavailablefromRotronicand Novasina. 1) 1)ThisinformationisgivenfortheconvenienceofusersofthisInternationalStandardanddoesnotconstituteanendorsement byISOofthisproduct.Equivalentproductsmaybeusedifthey
31、canbeshowntoleadtothesameresults. BS 5743:20004 Bibliography 1 CORESTARecommendedMethodNo.21:August1991, Atmosphere for conditioning and testing tobacco and tobacco products. 2 ISO15592-2, Fine-cut tobacco and smoking articles made from it Methods of sampling, conditioning and analysis Part 2: Atmos
32、phere for conditioning and testing (under preparation). 3 ISO187, Paper, board and pulps Standard atmosphere for conditioning and testing and procedure for monitoring the test atmosphere and conditioning of samples. 4 ISO558:1980, Conditioning and testing Standard atmospheres Definitions. 5 ISO4677-
33、1, Atmospheres for conditioning and testing Determination of relative humidity Part 1: Aspirated psychrometer method. 6 CORESTARecommendedMethodNo.46:May1998, Atmosphere for conditioning and testing cigars of all sizes and shapes. BS 5743:2000BS 5743:2000 ISO 3402:1999 BSI 389 Chiswick High Road Lon
34、don W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI British Standards Institution B
35、SI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should mak
36、e sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee res
37、ponsible, the identity of which can be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, in
38、ternational and foreign standards publications should be addressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwi
39、se requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and
40、 services. Contact the Information Centre. Tel: 020 8996 7111. Fax: 020 8996 7048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administratio
41、n. Tel: 020 8996 7002. Fax: 020 8996 7001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduce
42、d, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type
43、 or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel: 020 8996 7070.
