1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN ISO 11721-1:2001 Th
2、e European Standard EN ISO 11721-1:2000 has the status of a British Standard ICS 07.100.99; 59.080.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Textiles Determination of the resistance of cellulose- containing textiles to micro-organisms Soil burial test Part 1: Assessme
3、nt of rot-retardant finishingThis British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 March 2001 BSI 03-2001 ISBN 0 580 36695 2 BS EN ISO 11721-1:2001
4、Amendments issued since publication Amd. No. Date Comments National foreword This British Standard is the official English language version of EN ISO 11721-1:2001. It is identical with ISO 11721-1:2001. The UK participation in its preparation was entrusted to Technical Committee TCI/80, Chemical tes
5、ting of textiles, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developmen
6、ts and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications
7、 with their corresponding European publications. The British Standards which implement these international or European publications 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 Standa
8、rds Electronic Catalogue. A British Standard 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 page
9、s This document comprises a front cover, an inside front cover, the EN ISO title page, pages 2 to 13 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.EUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO117211 January2001 ICS07.100.99;5
10、9.080.30 Englishversion TextilesDeterminationoftheresistanceofcellulosecontaining textilestomicroorganismsSoilburialtestPart1: Assessmentofrotretardantfinishing(ISO117211:2001) TextilesDterminationdelarsistanceauxmicro organismesdestextilescontenantdelacelluloseEssai denfouissementPartie1:Evaluation
11、duntraitement dimputrescibilit(ISO117211:2001) TextilienBestimmungderWiderstandsfhigkeit zellulosehaltigerTextiliengegenMikroorganismen ErdeingrabetestTeil1:Nachweiseiner verrottungshemmendenAusrstung(ISO117211:2001) ThisEuropeanStandardwasapprovedbyCENon4October2000. CENmembersareboundtocomplywitht
12、heCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardex
13、istsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,
14、Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploita
15、tioninanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO117211:2001EPage2 ENISO117211:2001 Contents Foreword 3 Introduction .4 1 Scope.5 2 Normativereferences .5 3 Safetyprecautions .5 4 Principle 5 5 Apparatusandreagents 6 6 Testspecimens 7 6.1 Preparation .7 6.2 Numberofspec
16、imens. .7 7 Leachingprocedure .7 8 Assessmentofthelevelofmicrobialactivityofthesoil .8 9 Procedure8 10 Calculationandexpressionofresults .9 11 Testreport .10 AnnexA (normative) Determinationofwaterholdingcapacityandwatercontentofthe testsoil 11 A.1 Determinationofthewatercontent(WC) 11 A.2 Correctio
17、nofwatercontentfromalowertoahighervalue11 A.3 Determinationofwaterholdingcapacity(WHC).12 AnnexZA(normative)Normativereferencestointernationalpublicationswiththeir relevantEuropeanpublications13Page3 ENISO117211:2001 Foreword ThetextofENISO117211:2001hasbeenpreparedbyTechnicalCommitteeCEN/TC248“Text
18、iles andtextileproducts“,thesecretariatofwhichisheldbyBSI,incollaborationwithTechnical CommitteeISO/TC38“Textiles“. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofan identicaltextorbyendorsement,atthelatestbyJuly2001,andconflictingnationalstandardsshallbe withdrawn
19、atthelatestbyJuly2001. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthe followingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg, Netherlands,Norway,Portugal,Spai
20、n,Sweden,SwitzerlandandtheUnitedKingdom.Page4 ENISO117211:2001 Introduction Cellulosecontainingtextilesareconsideredresistanttoattackbymicroorganismspresentinsoilif theirstructure,appearanceandtensilestrengtharenotessentiallyalteredafterasoilburialtest.The resistancetodeteriorationisassessedbymeasur
21、ingtherelativereductionintensilestrengthbetween buriedandunburiedspecimens. Ifanassessmentoflongtermresistanceisrequired,theproceduredescribedinISO117212(in preparation)isapplicable. Duetothebiologicalnatureofthesoilburialtest,andthefactthatthetestsoilcannotbeprecisely standardized,thisstandardisonl
22、yintendedtoassesstheresistanceofafabrictomicroorganisms aftercomparingtheperformanceofspecimenswithandwithoutafinish.Page5 ENISO117211:2001 1Scope Thisstandardspecifiesamethodfordeterminationoftheresistanceofchemicallypretreatedtextiles totheactionofmicroorganismspresentinsoilincomparisonwithuntreat
23、edtextiles. Thismethodisapplicabletoflattextilesmadeofcellulosiccontainingyarns(tentage,tarpaulins, webbingandtapes)thatwilltypicallycomeintocontactwithsoilduringuse. Duetotheinherentresistanceofmostsyntheticfibrestoattackbymicroorganisms,fabricscontaining ahighproportionofsyntheticfibrescanonlybeju
24、dgedbythesemethodsforchangesinstructureand appearance. Althoughthismethodallowsgoodreproducibilityofresults,itisintendedtoshowcomparative performanceratherthanprovideabsolutevalues. NOTE Heavytarpaulinfabricsandwebbingmaybeofsuchastructurethatsampleswithoutfinishare resistantwithina14dayssoilburialp
25、eriod.Alsoinsuchcasesthedecayrateoftheuntreatedsample determinesthelengthoftheburialperiod. 2 Normativereferences ThisInternationalStandardincorporatesbydatedorundatedreference,provisionsfromother publications.Thesenormativereferencesarecitedattheappropriateplacesinthetextandthe publicationsareliste
26、dhereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofany ofthesepublicationsapplytothisInternationalStandardonlywhenincorporatedinitbyamendment orrevision.Forundatedreferencesthelatesteditionofthepublicationreferredtoapplies(including amendments). ISO139, TextilesStandardatmospheresforco
27、nditioningandtesting ISO7218, MicrobiologyoffoodandanimalfeedingstuffsGeneralrulesformicrobiologicalexaminations ISO8022, SurfaceactiveagentsDeterminationofwettingpowerbyimmersion ISO139341, TextilesTensilepropertiesoffabricsPart1:Determinationofmaximumforceand elongationatmaximumforceusingthestripm
28、ethod 3Safety precautions Thismethodrequirestheuseofviablemouldpropagulesandambientconditionswhichpromote mouldandbacterialgrowth.Anysafetyprecautionsandpersonalhygieneformicrobiological examinationsshallbefollowed(e.g.ISO7218). 4Principle Cellulosecontainingtextilesareconsideredresistanttoattackbym
29、icroorganismspresentinsoilif theirstructure,appearanceandtensilestrengthremainessentiallyunalteredduringasoilburialtest. Thismethodcomparestherelativereductionintensilestrengthofspecimensbeforeandaftersoil burial. Themethodisusedtocomparefinishedandunfinishedspecimensofthesamequality.The specimensar
30、eburiedinatestsoilofcontrolledwaterholdingcapacityandoptimumwatercontentfor microbialactivity.Thefinishedandunfinishedspecimensareburiedforaperiodofuptoninedays,Page6 ENISO117211:2001 whenthespecimenswithoutafinishshowareductionintensilestrengthofapproximately80%.At thisstagethetensilestrengthlossof
31、thefinishedandunfinishedspecimensaredetermined. Thelimitationofthesoilburialtesttoamaximumninedaysfortheunfinishedspecimenstolose80% oftheirinitialtensilestrengthservesasvalidationofthemicrobialactivityofthetestsoilandthetest system. NOTE1 Thedurationofthetestwillvarydependingontheactivityofthesoil.
32、Itisimportanttonotethatthe reductioninstrengthbetweenspecimenswithandwithoutanappliedfinishisthecriticalfactor,andnotthe durationofthetest.Asoilofloweractivitywillproducethesameresultasoneofhigheractivity,butthetestwill takelonger. NOTE2 A fixedtime soil burial test may allow an undefined attack on
33、the cellulosic material. The reproducibilityofresultsforreductionoftensilestrengthoffinishedandunfinishedtestspecimensisthecritical factor. 5 Apparatusandreagents 5.1 Containers,ofunglazedpotteryorreinforcedcement(asbestossubstitutematerials),atleast 150mmdeep. Containerswithmorethan150mmfillingheig
34、htshallhaveholesatthebaseforexchangeofair. 5.2 Testsoil,commercialgradecompostorcompostcontaininggardensoilaspurchasedinthe manufacturersoriginalpackingmaybeused.Freshcompostshallbemixedwithcompostpreviously usedforsoilburialtestingorwithsoilpreviouslyacclimatizedatequilibriummoistureto(95to99)% rel
35、ativehumidityandthoroughlymixedbeforeuse. Thetestsoilshallbesufficienttofillallthecontainersusedinaseriesoftests,andshallbefine grained,freeflowingandnotstickyorlumpy.Thewaterholdingcapacity(WHC)(ormaximum moistureretentioncapacity)ofthetestsoilshallbedeterminedandthewatercontent(WC)shallbe (60 5)%o
36、ftheWHC. ThepHofthetestsoilshallbebetween4,0and7,5. PreparethetestsoilofknownWHCformoisturecontentdeterminationbeforecommencingthetest.If thesoilistoomoist,letitairdry.Ifthesoilistoodry,oversprayittoaWCof(605)%oftheWHC. NOTE1 SeeannexAforasuitablemethod. NOTE2 60%ofWHCguaranteesbestmicrobialactivity
37、andoptimumwateractivityformicrobialgrowth.The watercontentnecessaryforonesoilisthereforealwaysprescribedasapproximately60%ofWHCofthe sample.Lowerhumidityslowsdownorpreventsrotting;higherhumiditymayleadtounevennessofresultsand anaerobicprocesses. NOTE3 Soilblendswithhighclayorloamcontentsareunsuitabl
38、ebecauseoflowairpermeabilityand insufficientmoisturedistribution. 5.3 Incubator,forincubationofthesoilburialcontainersduringtheentiretestat(95to100)% relativehumidityoftheairat(291)C. 5.4 Balance,fordeterminingWCandWHCofthetestsoil. 5.5 Oven,fordryingsoilsamplesat(1042)Candfordryingspecimensat(455)C
39、. 5.6 Ethanol/water(70%/30%volumefraction)solution ,forcleaningtheburiedspecimensbefore tensilestrengthdetermination. 5.7 Microscope(x30tox40magnification) ,forvisualexaminationoftheburiedspecimens.Page7 ENISO117211:2001 6 Testspecimens 6.1Preparation Preparetestspecimensfromthemiddleofthelaboratory
40、samplesbycuttingthespecimens lengthwisefromthewarpdirectionofthefabric. Withblendedfabricsand/orifagreedbetweentheinterestedparties,testspecimensmaybetaken fromtheweftdirection. Blendedfabricscontaining100%cellulosefibresinthewarporweftdirectionshallbesampledby takingthetestspecimensfromthe100%cellu
41、losedirectiononly. Cuttestspecimens300mmlongand30mmwideandthenfraydownbothsidestogiveacentral widthof20mm(seeISO139341). Forfabricsthataretoonarrowtoallowthespecifiedspecimenwidth,carryoutthetestatfullfabric width. NOTE Aneffectivewidthof20mmanddistancebetweenthejawsof100mmisusedduetothelarge quanti
42、tiesofuntreatedfabricsrequiredandthecapacityofthesoilcontainers. 6.2 Numberofspecimens Foreachtestprepare20testspecimens,10fortestingwithoutburialand10fortestingaftersoil burial. Fordeterminationofthesoilburialduration,i.e.timeatwhichthereisan80%reductioninstrengthin thecontrolspecimenswithoutapplie
43、dfinish,prepareatleast20controlspecimensoftheunfinished testsample.Thesecontrolspecimensshallbeofthesamefabricquality,i.e.sameyarn(s),massper unitarea.construction/weave,preparationanddyeingwithnoadditionalappliedfinishsuchasa waterrepellent,softenerorbiocide. NOTE Forblendswithsyntheticfibres,see8.
44、3. 7Leaching procedure Unlessotherwiseagreedbetweentheinterestedparties,subjectallthefinishedandunfinishedtest specimens (i.e.those for testing without soil burial and those for testing after soil burial) to the followingleachingprocedure.Excludethecontrolspecimensfromtheleachingprocedure. Holdthetestspecimensunderfreshrunn
