NoC96/20 OfficialJournaloftheEuropeanCommunities 6.4.94
ProposalforaEuropean Parliament andCouncilDirective oncertainmethodsforthe
quantitative analysisofbinarytextilefibremixtures
(94/C96/02)
(TextwithEEArelevance )
COM(93)713final
(Submitted bytheCommission on25January1994).
THEEUROPEAN PARLIAMENT ANDTHECOUNCIL OF
THEEUROPEAN UNION ,
HavingregardtotheTreatyestablishing theEuropean
Community ,andinparticular Article100athereof.
HavingregardtotheproposalfromtheCommission ,
HavingregardoftheopinionoftheEconomicandSocial
Committee ,5.Whereasdevelopments intechnology necessitate
frequentadaptation ofthetechnicalspecifications
definedintheseparatedirectives onmethodsof
textileanalysis;whereas,inordertofacilitatethe
implementation ofmeasuresrequiredtothateffect,
aprocedure shouldbelaiddownestablishing ,
withinaCommittee fortheadaptation ofmethods
oftextileanalysistodevelopments intechnology ,
closecooperation betweenMemberStatesandthe
Commission ;
6.Whereas ,inthecaseofbinarymixturesforwhich
thereisnouniformmethodofanalysisat
Community level,thelaboratory responsible for
thetestmaydetermine thecomposition ofsuch
mixturesusinganyvalidmethodatitsdisposal,
indicating intheanalysisreporttheresultobtained
and,insofarasthisisknown,thedegreeof
accuracyofthemethodused;
7.Whereastheprovisions ofthisDirective arein
accordance withtheopinionoftheCommittee for
Directives relatingtoTextileNamesand
Labelling ;
8.Whereas thisDirective mustnotaffectthe
obligations oftheMemberStatesconcerning the
deadlinesfortransposal oftheDirectives setoutin
AnnexIII,partB,1.WhereasCouncilDirective72/276/EECof17July
1972ontheapproximation ofthelawsofthe
MemberStatesrelatingtocertainmethodsforthe
quantitative analysisofbinarytextilefibre
mixtures (]),aslastamended byDirective
87/184/EEC(2)hasbeenamendedfrequently and
substantially ;whereasforreasonsofclarityand
rationality thesaidDirective shouldbe
consolidated ;
2.Whereas European Parliament andCouncil
Directive.../.../ECof...19..ontextilenames
requireslabellingtoindicatethenatureofthe
fibresintextileproducts ,checksontheconformity
oftheseproductswiththeindications givenonthe
labelbeingcarriedoutbyanalysis;
3.Whereas themethods usedforofficialtestsinthe
MemberStatestodetermine thefibrecomposition
oftextileproductsshouldbeuniform ,asregards
boththepre-treatment ofthesampleandits
quantitative analysis;
4.WhereasDirective.../.../ECprovidesthatthe
samplingandanalysingmethodstobeusedinall
MemberStatesforthepurposeofdetermining the
fibrecomposition ofproductswillbespecifiedin
separatedirectives ;whereasthereforeAnnexIIof
thisDirectivelaysdown15uniformmethodsof
analysisformostofthetextileproductscomposed
ofbinarymixturesthatareonthemarket;HAVEADOPTED THISDIRECTIVE :
Article 1
ThisDirective concernsmethodsforthequantitative
analysisofcertainbinarytextilefibremixtures ,including
thepreparation oftestsamplesandtestspecimens .
Article2
0)OJNoL173,31.7.1972,p.1.
(2)OJNoL75,17.3.1987,p.21.'Testsample'meansasampleofasuitablesizefor
analysis,takenfromlaboratory bulksamplesinturn
takenfromabatchofarticlesforanalysis.

6.4.94 OfficialJournaloftheEuropeanCommunities NoC96/21
'Testspecimen'meansthatpartofthetestsample
requiredtogiveanindividual testresult.
Article3
MemberStatesshalltakeallnecessary stepstoensure
that,inaccordance withtheDirective ./EC,the
provisions inAnnexes IandIIonmethodsforthe
quantitative analysisofcertainbinarymixtures,including
thepreparation oftestsamplesandtestspecimens ,are
appliedinallofficialteststodetermine thecomposition
oftextileproductsputonthemarket.2.Therepresentative oftheCommission shallsubmitto
theCommittee adraftofthemeasurestobeadopted.
TheCommittee shalldeliveritsopiniononthedraft
withinatimelimitsetbythechairmanhavingregardto
theurgencyofthematter.Opinionsshallbedeliveredby
amajorityof54votes,thevotesoftheMemberStates
beingweightedasprovidedinArticle148(2)ofthe
Treaty.
Thechairman shallnotvote.
3.(a)TheCommission shalladoptthemeasures
envisagedwheretheyareinaccordance withthe
opinionoftheCommittee .
(b)Wherethemeasures envisaged arenotin
accordance withtheopinionoftheCommittee ,or
ifnoopinionisdelivered,theCommission shall
withoutdelayproposetotheCouncilthe
measurestobeadopted .
TheCouncilshallactbyaqualifiedmajority .
(c)If,withinthreemonthsoftheproposalbeing
submitted toit,theCouncilhasnotacted,the
proposed measures shallbeadoptedbythe
Commission .Article4
Anylaboratory responsible forthetestingofbinary
mixtures forwhichthereisnouniform methodof
analysisatCommunity levelshalldetermine the
composition ofsuchmixturesbyusinganyvalidmethod
atitsdisposal,indicating intheanalysisreporttheresult
obtainedand,insofarasthisisknown,thedegreeof
accuracyofthemethodused.
Article7
Article5Member Statesshallensurethatthetextsofthemain
provisions ofnationallawwhichtheyadoptinthefield
coveredbythisDirective arecommunicated tothe
Commission .
Article81.ACommittee fortheadaptation ofmethodsoftextile
analysistodevelopments intechnology (hereinafter called
the'Committee ')isherebysetup;itshallconsistof
representatives oftheMember Stateswitha
representative oftheCommission aschairman .
2.TheCommission shalladoptitsownrulesof
procedure .
3.Adaptations totechnological developments inthe
methodsofquantitative analysisprovidedforinAnnexII
shallbemadeinaccordance withtheprocedure laid
downinArticle6.TheDirectives listedinAnnexIII,PartAarerepealed,
withoutprejudicetotheobligations oftheMemberStates
concerning thedeadlinesfortransposal setoutinAnnex
III,PartB.
References totherepealedDirectives shallbeconstrued
asreferences tothisDirective andshouldbereadin
accordance withthecorrelation tablesetoutinAnnex
IV.
Article9
Article6
1.Wheretheprocedure laiddowninthisArticleis
invokedmattersshallbereferredtotheCommittee byits
chairman ,eitheronhisowninitiativeorattherequestof
therepresentative ofaMemberState.ThisDirective isaddressed totheMember States.
ThisDirectiveshallenterintoforceonthe20thday
following itspublication intheOfficialJournalofthe
European Communities .

NoC96/22 OfficialJournaloftheEuropean Communities 6.4.94
ANNEX I
PREPARATION OFTESTSAMPLES ANDTESTSPECIMENS TODETERMINE THEFIBRE
COMPOSITION OFTEXTILE PRODUCTS
1.FIELDOFAPPLICATION
ThisAnnexgivesprocedures forobtaininglaboratory testsamplesofasuitablesizeforpre-treatment
forquantitative analysis (i.e.ofamassnotexceeding 100g)fromlaboratory bulksamples,andfor
selectingtestspecimens fromthelaboratory testsamplesthathavebeenpre-treated toremove
non-fibrous matter(').
2.DEFINITIONS
2.1.Bulksource—Thatquantitiyofmaterialwhichisjudgedonthebasisofoneseriesoftestresults.
Thismaycomprise ,forexample,allthematerialinonedeliveryofcloth;alltheclothwovenfrom
aparticular beam;aconsignment ofyarn,abaleoragroupofbalesofrawfibre.
2.2.Laboratory bulksample—Thatportionofthebulksourcetakentoberepresentative ofthewhole,
andwhichisavailabletothelaboratory .Thesizeandnatureofthelaboratory bulksampleshould
besufficienttoovercomeadequately thevariability ofthebulksourceandtofacilitateeaseof
handlinginthelaboratory (2).
2.3.Laboratory testsample—Thatportionofthelaboratory bulksamplethatissubjectedto
pre-treatment toremovenon-fibrous matter,andfromwhichtestspecimens aretaken.Thesizeand
natureofthelaboratory testsampleshouldbesufficienttoovercomeadequately thevariability of
thelaboratory bulksample(3).
2.4.Testspecimen—Theportionofmaterialrequiredtogiveanindividual testresult,andselected
fromthelaboratory testsample.
3.PRINCIPLE
Thelaboratory testsampleisselectedsothatitisrepresentative ofthelaboratory bulksample.
Thetestspecimens aretakenfromthelaboratory testsampleinsuchawaythateachofthemis
representative ofthelaboratory testsample.
4.SAMPLING FROMLOOSEFIBRES
4.1.Unorientated fibres—Obtainthelaboratory testsamplebyselectingatrandomtuftsfromthe
laboratory bulksample.Mixthoroughly thewholeofthelaboratory testsamplebymeansofa
laboratory carder(4).Subjectthewebormixture,includingloosefibresandfibresadheringtothe
equipment usedformixing,topre-treatment .Thenselecttestspecimens ,inproportion tothe
respective masses,fromthewebormixture,fromtheloosefibresandfromthefibresadheringto
theequipment .
Ifthecardwebremainsintactafterpre-treatment ,selectthetestspecimens inthemannerdescribed
in4.2.Ifthecardwebisdisturbedbythepre-treatment ,selecteachtestspecimenbyremovingat
randomatleast16smalltuftsofsuitableandapproximately equalsizeandthencombinethem.-
4.2.Orientated fibres(cards,webs,slivers,rovings )—Fromrandomly selectedpartsofthelaboratory
bulksamplecutnotlessthan10cross-sections eachofmassapproximately 1g.Subjectthe
laboratory testsamplesoformedtothepre-treatment .Recombine thecross-sections bylayingthem
sidebysideandobtainthetestspecimenbycuttingthroughthemsoastotakeaportionofeachof
the10lenghts.
5.SAMPLING YARN
5.1.Yarninpackagesorinhanks—Sampleallthepackagesinthebulklaboratory sample.
(')Insomecasesitisnecessarytopre-treattheindividual testspecimen .
(2)Formade-upandfinishedarticlesseeSection7.
(3)See1.
(4)Thelaboratory cardermaybereplacedbyafibreblender,orthefibresmaybemixedbythemethodof'tuftsand
rejects'.

6.4.94 OfficialJournaloftheEuropeanCommunities NoC96/23
Withdraw theappropriate continuous equallengthsfromeachpackageeitherbywindingskeinsof
thesamenumberofturnsonawrap-reel('),orbysomeothermeans.Unitethelengthssidebyside
eitherasasingleskeinorasatowtoformthelaboratory testsample,ensuringthatthereareequal
lenghtsfromeachpackageintheskeinortow.
Subjectthelaboratory testsampletothepre-treatment .
Taketestspecimens fromthelaboratory testsamplebycuttingabunchofthreadsofequallength
fromtheskeinortow,takingcaretoseethatthebunchcontainsallthethreadsinthesample.
Ifthetexoftheyarnistandthenumberofpackagesselectedfromthelaboratory bulksampleisn,
thentoobtainatestsampleof10g,thelengthofyarntobewithdrawn fromeachpackageis
106
~T7~cm-Nt
Ifntishigh,i.e.morethan2000,windaheavierskeinandcutitacrossintwoplacestomakea
towofsuitablemass.Theendsofanysampleintheformofatowshouldbesecurelytiedbefore
pre-treatment andtestspecimens takenfromaplaceremotefromthetiebands.
5.2.Yarnonwarp—Takethelaboratory testsamplebycuttingalengthfromtheendofthewarp,not
lessthan20cmlongandcomprising alltheyarnsinthewarpexcepttheselvedgeyarns,whichare
rejected.Tiethebunchofthreadstogethernearoneend.Ifthesampleistoolargeforpre-treatment
asawholedivideitintotwoormoreportions,eachtiedtogetherforpre-treatment ,andreunitethe
portionsaftereachhasbeenpre-treated separately .Takeatestspecimenbycuttingasuitablelength
fromthelaboratory testsamplefromtheendremotefromthetieband,andcomprising allthe
threadsinthewarp.ForwarpofNthreadsoftext,thelengthofaspecimenofmass1gis
105
Nt
6.SAMPLING FABRIC
6.1.Fromalaboratory bulksampleconsistingofasinglecuttingrepresentative ofthecloth
—Cutadiagonalstripfromonecornertotheotherandremovetheselvedges .Thisstripisthe
laboratory testsample.Toobtainalaboratory testsampleofxg,thestripareashallbe
x104———cm2,whereGisthemassoftheclothing/m2.G
Subjectthelaboratory testsampletothepre-treatment andthencutthestriptransversely into
fourequallengthsandsuperimpose them.
Taketestspecimens fromanypartofthelayeredmaterialbycuttingthroughallthelayersso
thateachspecimencontainsanequallengthofeachlayer.
Ifthefabrichasawovendesign,makethewidthofthelaboratory testsample,measured
paralleltothewarpdirection ,notlessthanonewarprepeatofthedesign.If,withthis
conditionsatisfied,thelaboratory testsampleistoolargetobetreatedasawhole,cutitinto
equalparts,pre-treatthemseparately ,andsuperimpose thesepartsbeforeselectionofthetest
specimen ,takingcarethatcorresponding partsofthedesigndonotcoincide .
6.2.Fromalaboratory bulksampleconsistingofseveralcuttings
—Treateachcuttingasdescribed in6.1,andgiveeachresultseparately .
7.SAMPLING MADE-UP ANDFINISHED ARTICLES
Thebulklaboratory sampleisnormallyacompletemade-uporfinishedarticleorrepresentative fraction
ofone.
Whereappropriate determinethepercentage ofthevariouspartsofthearticlenothivingthesamefibre
content,inordertocheckcompliance withArticle9oftheDirectiveontextilenames.
(!)Ifthepackagescanbemountedinaconvenient creel,anumbercanbewoundsimultaneously .

NoC96/24 OfficialJournaloftheEuropeanCommunities 6.4.94
Selectalaboratory testsamplerepresentative ofthepartofthemade-uporfinishedarticle,whose
composition mustbeshownbythelabel.Ifthearticlehasseverallabels,selectlaboratory testsamples
representative ofeachpartcorresponding toagivenlabel.
Ifthearticlewhosecomposition istobedetermined isnotuniform,itmaybenecessarytoselect
laboratory testsamplesfromeachofthepartsofthearticleandtodeterminetherelativeproportions of
thevariouspartsinrelationtothewholearticleinquestion .
Thencalculatethepercentages takingintoaccounttherelativeproportions ofthesampledparts.
Subjectthelaboratory testsamplestothepre-treatment .
Thenselecttestspecimensrepresentative ofthepre-treated laboratory testsamples .

6.4.94 OfficialJournaloftheEuropeanCommunities NoC96/25
ANNEX II
METHODS FORQUANTITATIVE ANALYSIS OFCERTAIN BINARYFIBREMIXTURES
1.GENERAL
Introduction
Methodsforthequantitative analysisoffibremixturesarebasedontwomainprocesses ,themanual
separation andthechemicalseparation offibres.
Themethodofmanualseparation shouldbeusedwheneverpossiblesinceitgenerallygivesmoreaccurate
resultsthanthechemicalmethod.Itcanbeusedforalltextileswhosecomponent fibresdonotforman
intimatemixture,asforexampleinthecaseofyarnscomposed ofseveralelementseachofwhichismade
upofonlyonetypeoffibre,orfabricsinwhichthefibreofthewarpisofadifferentkindtothatofthe
weft,orknittedfabricscapableofbeingunravelled madeupofyarnsofdifferenttypes.
Ingeneral,themethodsofchemicalquantitative analysisarebasedontheselectivesolutionoftheindividual
components .Aftertheremovalofacomponent theinsolubleresidueisweighed,andtheproportion ofthe
solublecomponent iscalculated fromthelossinmass.ThisfirstpartoftheAnnexgivestheinformation
commontotheanalysesbythismethodofallfibremixturesdealtwithintheAnnex,whatevertheir
composition .Itshouldthusbeusedinconjunction withthesucceeding individual sectionsoftheAnnex,
whichcontainthedetailedprocedures applicable toparticular fibremixtures .Occasionally ,ananalysisis
basedonaprincipleotherthanselectivesolution;insuchcasesfulldetailsaregivenintheappropriate
section .
Mixturesoffibresduringprocessing and,toalesserextent,finishedtextilesmaycontainnon-fibrous
matter,suchasfats,waxesordressings ,orwater-soluble matter,eitheroccurringnaturallyoraddedto
facilitateprocessing .Non-fibrous mattermustberemovedbeforeanalysis .Forthisreasonamethodfor
removingoils,fats,waxesandwater-soluble matterisalsogiven.
Inaddition,textilesmaycontainresinsorothermatteraddedtoconferspecialproperties .Suchmatter,
includingdyestuffs inexceptional cases,mayinterferewiththeactionofthereagentonthesoluble
component and/oritmaybepartiallyorcompletely removedbythereagent.Thistypeofaddedmattermay
thuscauseerrorsandshouldberemovedbeforethesampleisanalysed .Ifitisimpossible toremovesuch
addedmatterthemethodsforquantitiative chemicalanalysisgiveninthisAnnexarenolonger
applicable .
Dyeindyedfabricsisconsidered tobeanintegtalpartofthefibreandisnotremoved .
Analysesareconducted onthebasisofdrymassandaprocedure isgivenfordetermining drymass.
TheresultisobtainedbyapplyingtothedrymassofeachfibretherecoveryfactorslistedinAnnexIItothe
Directive ontextilenames.
Beforeproceeding withanyanalysis,allthefibrespresentinthemixtureshouldhavebeenidentified .In
somemethods,theinsolublecomponent ofamixturemaybepartiallydissolved inthereagentusedto
dissolvethesolublecomponent .Wherepossible,reagentshavebeenchosenthathavelittleornoeffecton
theinsolublefibres.Iflossinmassisknowntooccurduringtheanalysis,theresultshouldbecorrected ;
correction factorsforthispurposearegiven.
Thesefactorshavebeendetermined inseverallaboratories bytreating,withtheappropriate reagentas
specifiedinthemethodofanalysis,fibrescleanedbythepre-treatment .Thesecorrection factorsapplyonly
toundegraded fibresanddifferentcorrection factorsmaybenecessary ifthefibreshavebeendegraded
beforeorduringprocessing .Theprocedures givenapplytosingledeterminations .
Atleasttwodeterminations onseparatetestspecimens shouldbemade,bothinthecaseofmanual
separation andinthecaseofchemicalseparation .Forconfirmation ,unlesstechnically impossible ,itis
recommended tousealternative procedures wherebytheconstituent thatwastheresidueinthestandard
methodisdissolved outfirst.
I. Generalinformation onmethodsforthequantitative chemicalanalysisoftextilefibremixtures
Information commontothemethodsgivenforthequantitative chemicalanalysisoffibre
mixtures .

NoC96/26 OfficialJournaloftheEuropeanCommunities 6.4.94
1.1.Scopeandfieldofapplication
Thefieldofapplication foreachmethodspecifiestowhichfibresthemethodisapplicable .
1.2.Principle
Aftertheidentification ofthecomponents ofamixture,thenon-fibrous materialisremovedby
suitablepre-treatment andthenoneofthecomponents ,usuallybyselectivesolution(!).The
insolubleresidueisweighedandtheproportion ofsolublecomponent calculated fromthelossin
mass.Exceptwherethispresentstechnicaldifficulties ,itispreferabletodissolvethefibrepresent
inthegreaterproportion ,thusobtainingthefibrepresentinthesmallerproportion asresidue.
1.3.Materialsandequipment
1.3.1.Apparatus
1.3.1.1.Filtercruciblesandweighingbottleslargeenoughtocontainsuchcrucibles,oranyother
apparatus givingidenticalresults.
1.3.1.2.Vacuumflask.
1.3.1.3.Desiccator containing self-indicating silicagel.
1.3.1.4.Ventilated ovenfordryingspecimens at150°±3°C.
1.3.1.5.Analytical balance,accurateto0,0002g.
1.3.1.6.Soxhletextractororotherapparatus givingidenticalresults.
1.3.2.Reagents
1.3.2.1.Lightpetroleum ,redistilled ,boilingrange40to60°C.
1.3.2.2.Otherreagentsarespecifiedintheappropriate sectionsofeachmethod .Allreagentsusedshould
bechemically pure.
1.3.2.3.Distilledordeionized water.
1.4.Conditioning andtestingatmosphere
Becausedrymassesaredetermined ,itisunnecessary tocondition thespecimenortoconduct
analysesinaconditioned atmosphere .
1.5.Laboratory testsample
Takealaboratory testsamplethatisrepresentative ofthelaboratory bulksampleandsufficient
toprovideallthespecimens ,eachofatleast1g,thatarerequired .
1.6.Pre-treatment oflaboratory testsample
Whereasubstancenottobetakenintoaccountinthepercentage calculations (seeArticle12(3),
oftheDirectiveontextilenames)ispresent,itshouldfirstberemovedbyasuitablemethodthat
doesnotaffectanyofthefibreconstituents .
Forthispurpose,non-fibrous matterwhichcanbeextractedwithlightpetroleum andwateris
removedbytreatingtheair-drytestsampleinaSoxhletextractorwithlightpetroleum for1hour
ataminimumrateof6cyclesperhour.Allowthelightpetroleum toevaporate fromthesample,
(')Method12isanexception .Itisbasedonadetermination ofthecontentofaconstituent substance ofoneofthetwo
components .
(2)SeeAnnex1.1.

6.4.94 OfficialJournaloftheEuropeanCommunities NoC96/27
whichisthenextractedbydirecttreatmentconsisting insoakingthespecimeninwateratroom
temperature for1hourandthensoakingitinwaterat65±5°Cforafurhterhour,agitatingthe
liquorfromtimetotime.Usealiquor:specimenratioof100:1.Removetheexcesswaterfrom
thesamplebysqueezing ,suction,orcentrifuging andthenallowthesampletobecomeair-dry.
Wherenon-fibrous mattercannotbeextractedwithlightpetroleum andwater,itshouldbe
removedbysubstituting forthewatermethoddescribedaboveasuitablemethodthatdoesnot
substantially alteranyofthefibreconstituents .However ,forsomeunbleached ,naturalvegetable
fibres(e.g.jute,coir)itistobenotedthatnormalpre-treatment withlightpetroleum andwater
doesnotremoveallthenaturalnon-fibrous substances ;nevertheless additional pre-treatment is
notappliedunlessthesampledoescontainfinishesinsolubleinbothlightpetroleum and
water .
Analysisreportsshouldincludefulldetailsofthemethodsofpre-treatment used.
1.7.Testprocedure
1.7.1.Generalinstructions
1.7.1.1.Drying
Conductalldryingoperations fornotlessthan4hoursandnotmorethan16hoursat105±3
°Cinaventilated ovenwiththeovendoorclosedthroughout .Ifthedryingperiodislessthan14
hours,thespecimenmustbeweighedtocheckthatitsmasshasbecomeconstant .Themassmay
beconsidered tohavebecomeconstantif,afterafurtherdryingperiodof60minutes,its
variation islessthan0,05,% .
Avoidhandlingcruciblesandweighingbottles,specimens orresidueswithbarehandsduringthe
drying,coolingandweighingoperations .
Dryspecimens inaweighingbottlewithitscoverbesideit.Afterdrying,stoppertheweighing
bottlebeforeremovingitfromtheoven,andtransferitquicklytothedesiccator .
Drythefiltercrucibleinaweighingbottlewithitscoverbesideitintheoven.Afterdrying,close
theweighingbottleandtransferitquicklytothedesiccator .
Whereapparatusotherthanafiltercrucibleisused,dryingoperations intheovenshouldbe
conducted insuchawayastoenablethedrymassofthefibrestobedetermined without
loss.
1.7.1.2.Cooling
Conductallcoolingoperations inthedesiccator thelatterplacedbesidethebalance,until
completecoolingoftheweighingbottlesisattained,andinanycasefornotlessthan2hours.
1.7.1.3.Weighing
Aftercooling,completetheweighingoftheweighingbottlewithin2minutesofitsremovalfrom
thedesiccator .Weightoanaccuracyof0,0002g.
1.7.2.Procedure
Takefromthepre-treated laboratory testsampleatestspecimenweighingatleast1g.Cutyarn
orclothintolengthsofabout10mm,dissectedasmuchaspossible .Drythespecimenina
weighingbottle,coolitinthedesiccator andweighit.Transferthespecimentotheglassvessel
specifiedintheappropriate sectionoftherelevantCommunity method,reweightheweighing
bottleimmediately andobtainthedrymassofthespecimenbydifference .Completethetestas
specified intheappropriate sectionoftheapplicable method .Examine theresidue
microscopically tocheckthatthetreatmenthasinfactcompletely removedthesolublefibre.
1.8.Calculation andexpression ofresults
Expressthemassoftheinsolublecomponent asapercentage ofthetotalmassoffibreinthe
mixture .Thepercentage ofsolublecomponent isobtainedbydifference .Calculatetheresultson
thebasisofclean,drymass,adjustedby(a)therelevantrecoveryfactorsand(b)thecorrection
factorsnecessarytotakeaccountoflossofmatterduringpre-treatment andanalysis.
Calculations shouldbemadebyapplyingtheformulagivenin1.8.2.

NoC96/28 OfficialJournaloftheEuropean Communities 6.4.94
1.8.1.Calculation ofpercentage ofinsolublecomponent onclean,drymassbasis,disregarding lossof
fibremassduringpre-treatment .
Pl%=JSlEl
m
where
Ptisthepercentage ofclean,dryinsolublecomponent ;
misthedrymassofthespecimenafterpre-treatment ;
risthedrymassoftheresidue;
disthecorrection factorforlossofmassoftheinsolublecomponent inthereagentduringthe
analysis .
Suitablevaluesofdaregivenintheappropriate sectionofeachmethod .
Suchvaluesofdareofcoursethenormalvaluesapplicable tochemically undegraded fibres.
1.8.2.Calculation ofpercentage ofinsolublecomponent onclean,drymassbasis,withadjustment by
conventional recoveryfactorsand,whereappropriate ,correction factorsforlossmassduring
pre-treatment .
,00P,/l+a'+bl\
1\100/
P,A%= —
p,(i♦♦(loo-p,)(l♦-2z_L^_)
1\100/v"I100/
where
P}Aisthepercentage ofinsolublecomponent ,adjustedbyconventional recoveryfactorsandfor
lossofmassduringpre-treatment ;
Ptisthepercentage ofclean,dryinsolublecomponent ascalculated fromtheformulashownin
1.8.1.;
istheconventional recoveryfactorfortheinsolublecomponent (seeAnnexIItothe
Directiveontextilenames);
a2istheconventional recoveryfactorforthesolublecomponent (seeAnnexIItotheDirective
ontextilenames);
b!isthepercentage lossofinsolublecomponent causedbythepre-treatment ;
b2isthepercentage lossofsolublecomponent causedbythepre-treatment .
Thepercentage ofthesecondcomponent (P2A)isequalto100—PiA.
Whereaspecialpre-treatment hasbeenused,thevaluesofb^andb2shouldbedetermined ,if
possible,bysubmitting eachofthepurefibreconstituents tothepre-treatment appliedinthe
analysis.Purefibresarethosefreefromallnon-fibrous materialexceptthatwhichtheynormally
contain (eithernaturallyorbecauseofthemanufacturing process),inthestate(unbleached ,
bleached )inwhichtheyarefoundinthematerialtobeanalysed .
Wherenocleanseparateconstituent fibresusedinthemanufacture ofthematerialtobeanalysed
areavailable ,averagevaluesofb(andb2asobtainedfromtestsperformed oncleanfibressimilar
tothoseinthemixtureunderexamination ,shouldbeused.
Ifnormalpre-treatment byextraction withlightpetroleum andwaterisapplied,correction
factorsb!andb2maygenerallybeignored,exceptinthecaseofunbleached cotton,unbleached
flaxandunbleached hemp,wherethelossduetothepre-treatment isconventionally takenas
4%,andinthecaseofpolypropylene ,whereitistakenas1%.
Inthecaseofotherfibres,lossesduetothepre-treatment areconventionally disregarded in
calculations .

6.4.94 OfficialJournaloftheEuropeanCommunities NoC96/29
II.Methodofquantitative analysisbymanualseparation
II.1.Fieldofapplication
Thismethodisapplicable totextilefibresofalltypesprovidedtheydonotformanintimate
mixtureandthatitispossibletoseparatethembyhand.
II.2.Principle
Afteridentification oftheconstituents ofthetextile,thenon-fibrous materialisremovedby
suitablepre-treatment andthenthefibresareseparated byhand,driedandweighedinorderto
calculatetheproportion ofeachfibreinthemixture .
II.3.Apparatus
II.3.1.Weighingbottleoranyotherapparatus givingidenticalresults.
II.3.2.Desiccator containing self-indicating silicagel.
11.3.3.Ventilated ovenfordryingspecimens at150±3°C.
11.3.4.Analytical balance,accurateto0,0002g.
II.3.5.Soxhletextractor,orotherapparatus givinganidenticalresult.
II.3.6.Needle .
II.3.7.Twisttesterorsimilarapparatus .
II.4.Reagents
II.4.1.Lightpetroleum ,redistilled ,boilingrange40to60°C.
II.4.2.Distilledordeionized water.
II.5.Conditioning andtestingatmosphere
See1.4.
II.6.Laboratory testsample
See1.5.
II.7.Pre-treatment oflaboratory testsample
See1.6.
II.8.Procedure
II.8.1.Analysisofyarn
Selectfromthepre-treatment laboratory testsampleaspecimenofmassnotlessthan1g.Fora
veryfineyarn,theanalysismaybemadeonaminimum lengthof30m,whateveritsmass.Cut
theyarnintopiecesofasuitablelengthandseparatethefibretypesbymeansofaneedleand,if
necessary ,atwisttester.Thefibretypessoobtainedareplacedinpre-weighed weighingbottles
anddriedat105±3°Cuntilaconstantrnassisobtained ,asdescribed in1.7.1and1.7.2.
II.8.2.Analysisofcloth
Selectfromthepre-treated laboratory testsample,wellawayfromallselvedges ,aspecimenof
massnotlessthan1g,withedgescarefullytrimmedtoavoidfrayingandrunningparallelwith
weftorwarpyarns,orinthecaseofknittedfabricsinthelineofwalesandcourses.Separatethe
differentfibretypes,collecttheminpre-weighed weighingbottlesandproceedasdescribed in
II.8.1.

NoC96/30 OfficialJournaloftheEuropeanCommunities 6.4.94
II.9.Calculation andexpression ofresults
Expressthemassofeachfibreconstituent asapercentage ofthetotalmassofthefibresinthe
mixture .Calculatetheresultsonthebasisofclean,drymass,adjustedby(a)therelevant
recoveryfactorsand(b)thecorrection factorsnecessarytotakeaccountoflossofmatterduring
pre-treatment .
II.9.1.Calculation ofpercentage massesofclean,dryfibre,disregarding lossoffibremassduring
pre-treatment :
n/100m, 100
1]/O= =
mi+m2 m21+ =—
mi
where
Piisthepercentage ofthefirstclean,drycomponent ;
ni|istheclean,drymassofthefirstcomponent ;
m2istheclean,drymassofthesecondcomponent .
II.9.2.Forcalculation ofthepercentage ofeachcomponent withadjustment byconventional recovery
factorsand,whereappropriate ,bycorrection factorsforlossofmatterduringpre-treatment ,see
1.8.2.
III.l.Precisionofthemethods
Theprecisionindicatedinindividual methodsrelatestothereproducibility .
Thereproducibility referstotherealiability ,i.e.theclosenessofagreement betweenexperimental
valuesobtainedbyoperatorsindifferentlaboratories oratdifferenttimesusingthesamemethod
andobtainingindividual results,onspecimens ofanidenticalconsistent mixture.
Thereproducibility isexpressed byconfidence limitsoftheresultsforaconfidence levelof
95%.
Bythisismeantthatthedifference betweentworesultsinaseriesofanalysismadeindifferent
laboratories would,givenanormalandcorrectapplication ofthemethodtoanidenticaland
consistentmixture,beexceededonlyinfivecasesoutofa100.
III.2.Testreport
111.2.1.Statethattheanalysiswasconducted inaccordance withthismethod .
111.2.2.Givedetailsofanyspecialpre-treatment (see1.6).
III.2.3.Givetheindividual resultsandthearithmetic mean,eachtoanaccuracyof0,1.

6.4.94 OfficialJournaloftheEuropeanCommunities NoC96/31
2.SPECIAL METHODS —SUMMARY TABLE
Method Fieldofapplication Reagent
No1Acetate Certainotherfibres Acetone
No2Certainproteinfibres Certainotherfibres Alkalinesodium
hypochlorite
No3Viscose,cuproorcertain
typesofmodalCotton Zincchloride,Formicacid
No4Polyamide ornylon Certainotherfibres Formicacid,80%m/m
No5Acetate Triacetate Benzylalcohol
No6Triacetate Certainotherfibres Dichloromethane
No7Certaincellulose fibres Polyester Sulphuricacid,75%m/m
No8Acrylics,certain
modacrylics orcertain
chlorofibresCertainotherfibres Dimethylformamide
No9Certainchlorofibres Certainotherfibres Carbondisulphide/acetone,
55,5/44,5v/v
No10Acetate Certainchlorofibres Glacialaceticacid
No11Silk Woolorhair Sulphuricacid,75%m/m
No12Jute Certainanimalfibres Nitrogencontentmethod
No13Polypropylene Certainotherfibres Xylene
No14Chlorofibres
(homopolymers ofvinyl
chloride )Certainotherfibres Concentrated sulphuric
acidmethod
No15Chlorofibres ,certain
modacrylics ,certain
elastanes ,acetates,
triacetatatesCertainotherfibres Cyclohexanone

NoC96/32 OfficialJournaloftheEuropeanCommunities 6.4.94
METHOD No1
ACETATE ANDCERTAIN OTHER FABRICS
(Acetonemethod )
1.FIELDOFAPPLICATION
Thismethodisapplicable ,afterremovalofnon-fibrous matter,tobinarymixturesof:
1.acetate (19)
with
2.wool(1),animalhair(2and3),silk(4),cotton (5),flax(7),truehemp(8),jute(9),abaca(10),alfa
(11),coir(12),broom(13),ramie(14),sisal(15),cupro(21),modal(22),protein (23),viscose (25),
acrylic(26),polyamide ornylon(30)andpolyester (31).
Innocircumstances isthemethodapplicable toacetatefibreswhichhavebeendeacetylated onthe
suface.
2.PRNCIPLE
Theacetateisdissolvedoutfromaknowndrymassofthemixture,withacetone .Theresidueis
collected,washed,driedandweighed;itsmass,correctedifnecessary ,isexpressedasapercentage ofthe
drymassofthemixture .Thepercentage ofdryacetateisfoundbydifference .
3.APPARATUS ANDREAGENTS (additional tothosespecifiedinthegeneralinstructions )
3.1.Apparatus
Glass-stoppered conicalflasksofatleast200mlcapacity .
3.2.Reagent
Acetone .
4.TESTPROCEDURE
Followtheprocedure described inthegeneralinstructions andproceedasfollows :
tothespecimencontained inaglass-stoppered conicalflaskofatleast200mlcapacity,add100mlof
acetonepergramofspecimen,shaketheflask,standitfor30minutesatroomtemperature ,stirring
fromtimetotime,andthendecanttheliquidthroughtheweighedfiltercrucible;
repeatthetreatmenttwicemore(makingthreeextractions inall),butforperiodsof15minutesonly,
sothatthetotaltimeoftreatment inacetoneisonehour.Transfertheresiduetothefiltercrucible .
Washtheresidueinthefiltercruciblewithacetoneanddrainwithsuction .Refillthecruciblewith
acetoneandallowtodrainundergravity;
finally,drainthecruciblewithsuction,drythecrucibleandresidue,andcoolandweighthem.
5.CALCULATION ANDEXPRESSION OFRESULTS
Calculatetheresultsasdescribed inthegeneralinstructions .Thevalueof'd'is1,00.
6.PRECISON
Onahomogeneous mixtureoftextilematerials,theconfidence limitsofresultsobtainedbythismethod
arenotgreaterthan±1foraconfidence levelof95%.

6.4.94 OfficialJournaloftheEuropeanCommunities NoC96/33
METHOD No2
CERTAIN PROTEIN FIBRESANDCERTAIN OTHER FIBRES
(Methodusinghypochlorite )
1.FIELDOFAPPLICATION
Thismethodisapplicable ,afterremovalofnon-fibrous matter,tobinarymixturesof:
1.certainproteinfibres,namely :wool(1),animalhair(2and3),silk(4),protein (23)
with
2.cotton (5),cupro(21),viscose (25),acrylic (26)chlorofibres (27),polyamide ornylon(30),
polyester (31)polypropylene (33),elastane (39)andglassfibre(40).
Ifdifferentproteinfibresarepresent,themethodgivesthetotaloftheiramountsbutnottheir
individual quantities .
2.PRINCIPLE
Theproteinfibreisdissolvedoutfromaknowndrymassofthemixture,withahypochlorite solution .
Thisresidueiscollected ,washed,driedandweighed ;itsmass,correctedifnecessary ,isexpressed asa
percentage ofthedrymassofthemixture .Thepercentage ofdryproteinfibreisfoundby
difference .
Eitherlithiumhypochlorite orsodiumhypochlorite canbeusedforthepreparation ofthehypochlorite
solution .
Lithiumhypochlorite isrecommended incasesinvolving asmallnumberofanalysesorforanalyses
conducted atfairlylengthyintervals .Thisisbecausethepercentage ofhypochlorite insolidlithium
hypochlorite —unlikethatinsodiumhypochlorite —isvirtuallyconstant .Ifthepercentage of
hypochlorite isknown,hypochlorite contentneednotbecheckediodometrically foreachanalysis,since
aconstantweighedportionoflithiumhypochlorite canbeemployed .
3.APPARATUS ANDREAGENTS (otherthanthosespecifiedinthegeneralinstruction )
3.1.Apparatus
(i)Erlenmeyer flaskwithground-glass stopper,250ml;
(ii)thermostat ,adjustable to20(±2)°C.
3.2.Reagents
(i)Hypochlorite reagent
(a)Lithiumhypochlorite solution
Thisconsistsofafreshlypreparedsolutioncontaining 35(±2)g/1ofactivechlorine
(approximately 1M),towhich5(±0,5)g/1ofpreviously dissolvedsodiumhydroxide isadded.
Toprepare,dissolve100gramsoflithiumhypochlorite containing 35%activechlorine (or115
gramscontaining 30%activechlorine )inapproximately 700mlofdistilledwater,add5grams
ofsodiumhydroxide dissolved inapproximately 200mlofdistilledwaterandmakeupto
1litrewithdistilledwater.Thesolutionwhichhasbeenfreshlypreparedneednotbechecked
iodometrically ;
(b)Sodiumhypochlorite solution
Thisconsistsofafreshlypreparedsolutioncontaining 35(±2)g/1ofactivechlorine
(approximately 1M)towhich5(±0,5)g/1ofpreviously dissolvedsodiumhydroxide isadded.
Checktheactivechlorinecontentofthesolutioniodometrically beforeeachanalysis;
(ii)Aceticacid,dilutesolution
Dilute5mlofglacialaceticacidto11withwater.
4.TESTPROCEDURE
Followtheproceduredescribedinthegeneralinstructions andproceedasfollows :mixapproximately
1gramofthesamplewithapproximately 100mlofthehypochlorite solution (lithiumorsodium
hypochlorite )inthe250mlflaskandagitatethoroughly inordertowetoutthesample.

NoC96/34 OfficialJournaloftheEuropeanCommunities 6.4.94
Thenheattheflaskfor40minutesinathermostat at20°Candagitatecontinuously ,oratleastat
regularintervals .Sincethedissolution ofthewoolproceedsexothermically ,thereactionheatofthis
methodmustbedistributed andremoved .Otherwise ,considerable errorsmaybecausedbythe
incipientdissolution ofthenon-soluble fibres.
After40minutes,filtertheflaskcontentsthroughaweighedglass-filter crucibleandtransferany
residualfibresintothefiltercruciblebyrinsingtheflaskwithalittlehypochlorite reagent.Drainthe
cruciblewithsuctionandwashtheresiduesuccessively withwater,diluteaceticacid,andfinallywater,
drainingthecruciblewithsuctionaftereachaddition .Donotapplysuctionuntileachwashingliquor
hasdrainedundergravity.
Finally,drainthecruciblewithsuction,drythecruciblewiththeresidue,andcoolandweighthem.
5.CALCULATION ANDEXPRESSION OFRESULTS
Calculatetheresultsasdescribedinthegeneralinstructions .Thevalueof'd'is1,00,exceptforcotton,
viscoseandmodal,forwhich'd'=1,01,andunbleached cotton,forwhich'd'=1,03.
6.PRECISION
Onhomogeneous mixturesoftextilematerials ,theconfidence limitsforresultsobtainedbythis
methodarenotgreaterthan±1foraconfidence levelof95%.

6.4.94 OfficialJournaloftheEuropeanCommunities NoC96/35
METHOD No3
VISCOSE ,CUPROORCERTAIN TYPESOFMODALANDCOTTON
(Methodusingformicacidandzincchloride )
1.FIELDOFAPPLICATION
Thismethodisapplicable ,afterremovalofnon-fibrous matter,tobinarymixturesof:
1.viscose (25)orcupro(12),includingcertaintypesofmodalfibre(22),
with
2.cotton (5).
Ifamodalfibreisfoundtobepresent,apreliminary testshouldbecarriedouttoseewhetheritis
solubleinthereagent.
Thismethodisnotapplicable tomixturesinwhichthecottonhassufferedextensive chemical
degradation norwhentheviscoseorcuproisrenderedincompletely solublebythepresenceofcertain
dyesorfinishesthatcannotberemovedcompletely .
2.PRINCIPLE
Theviscose,cuproormodalfibreisdissolvedfromaknowndrymassofthemixture,withareagent
consisting offormicacidandzincchloride .Theresidueiscollected,washed,driedandweighed;its
correctedmassisexpressed asapercentage ofthedrymassofthemixture .Thepercentage ofdry
viscose,cuproormodalfibreisfoundbydifference .
3.APPARATUS ANDREAGENTS (otherthanthosespecifiedinthegeneralinstructions )
3.1.Apparatus
(i)glass-stoppered conicalflasksofatleast200mlcapacity;
(ii)apparatus formaintaining flasksat40±2°C.
3.2.Reagents
(i)Solutioncontaining 20goffusedanhydrous zincchlorideand68gofanhydrous formicacid
madeupto100gwithwater(namely20partsbymassoffusedanhydrous zincchlorideto
80partsbymassof85%m/mformicacid).
Attention isdrawn,inthisrespect,toAnnexII(1),pont1.3.2.2,whichlaysdownthatall
reagentsusedshouldbechemically pure;inaddition,itisessentialtouseonlyfusedanhydrous
zincchloride .
(ii)Ammonium hydroxide solution :dilute20mlofaconcentrated ammoniasolution (specific
gravity0,880g/ml))to1litrewithwater.
4.TESTPROCEDURE
Followtheprocedure describedinthegeneralinstructions andproceedasfollows:placethespecimen
immediately intheflask,pre-heated to40°C.Add100mlofthesolutionofformicacidandzinc
chloride,pre-heated to40°Cpergramofspecimen .Insertthestopperandshaketheflaskvigorously .
Keeptheflaskanditscontentsataconstanttemperature of40°Cfortwohoursandahalf,shakingthe
flaskathourlyintervals .Filterthecontentsoftheflaskthroughtheweighedfiltercrucibleandwiththe
helpofthereagenttransfertothecrucibleanyfibresremaining intheflask.Rinsewith20mlof
reagent .
Washcrucibleandresiduethoroughly withwaterat40°C.
Rinsethefibrousresidueinapproximately 100mlofcoldammoniasolution (3.2.ii)ensuringthatthis
residueremainswhollyimmersed inthesolutionfor10minutes0);thenrinsethoroughly withcold
water.
Donotapplysuctionuntileachwashingliquorhasdrainedundergravity.Finally,draintheremaining
liquidwithsuction,drythecrucibleandresidue,andcoolandweighthem.
(')Toensurethatthefibrousresidueisimmersed intheammoniasolutionfor10minutes,onemay,forexample,use
filtercrucibleadaptorfittedwithatapbywhichtheflowoftheammoniasolutioncanberegulated .

NoC96/36 OfficialJournaloftheEuropeanCommunities 6.4.94
5.CALCULATION ANDEXPRESSION OFRESULTS
Calculatetheresultsasdescribedinthegeneralinstructions .Thevalueof'd'forcottonis1,02.
6.PRECISION
Onahomogeneous mixtureoftextilematerials ,theconfidence limitsofresultsobtainedbythismethod
arenotgreaterthan±2foraconfidence levelof95%.

6.4.94 OfficialJournaloftheEuropeanCommunities NoC96/37
METHOD No4
POLYAMIDEORNYLON,ANDCERTAIN OTHERFIBRES
(Methodusing80%m/mformicacid)
1.FIELDOFAPPLICATION
Thismethodisapplicable ,afterremovalofnon-fibrous matter,tobinarymixturesof:
1.polyamide ornylon,(30),
with
2.wool(1),animalhair(2and3),cotton (5),cupro(21),modal (22),viscose (25),acrylic (26)
chlorofibre (27),polyester (31),polypropylene (33)andglassfibre(40).
Asmentioned above,thismethodisalsoapplicable tomixtureswithwool,butwhenthewoolcontent
exceeds25%,methodNo2shouldbeapplied (dissolving woolinasolutionofalkalinesodium
hypochlorite ).
2.PRINCIPLE
Thepolyamide fibreisdissolvedoutfromaknowndrymassofthemixture,withformicacid.The
residueiscollected,washed,driedandweighed;itsmass,corrected ifnecessary ,isexpressed asa
percentage ofthedrymassofthemixture .Thepercentage ofpolyamide ornylonisfoundby
difference .
3.APPARATUS ANDREAGENTS (otherthanthosespecifiedinthegeneralinstructions )
3.1.Apparatus
Glass-stoppered conicalflaskofatleast200mlcapacity ;
3.2.Reagents
(i)formicacid(80%m/m,relativedensityat20°C:1,186).Dilute880mlof90%m/mformic
acid(relativedensityat20°C:1,204)to1litrewithwater.Alternatively ,dilute780mlof98to
100%m/mformicacid(relativedensityat20°C:1,220)to1litrewithwater,
theconcentration isnotcriticalwithintherange77to83%m/mformicacid;
(ii)ammonia ,dilutesolution :dilute80mlofconcentrated ammonia solution (relativedensityat
20°C:0,880)to1litrewithwater.
4.TESTPROCEDURE
Followtheprocedure described inthegeneralinstructions andproceedasfollows:tothespecimen
contained intheconicalflaskofatleast200mlcapacity,add100mlofformicacidpergramof
specimen .Insertthestopper,shaketheflasktowetoutthespecimen .Standtheflaskfor15minutesat
roomtemperature ,shakingitatintervals .Filterthecontentsoftheflaskthroughtheweighedfilter
crucibleandtransferanyresidualfibrestothecruciblebywashingouttheflaskwithalittleformic
acidreagent.Drainthecruciblewithsuctionandwashtheresidueonthefiltersuccessively withformic
acidreagent,hotwater,diluteammoniasolution,andfinallycoldwater,drainingthecruciblewith
suctionaftereachaddition .Donotapplysuctionuntileachwashingliquorhasdrainedundergravity.
Finally,drainthecruciblewithsuction,drythecrucibleandresidue,andcoolandweighthem.
5.CALCULATION ANDEXPRESSION OFRESULTS
Calculatetheresultsasdescribed inthegeneralinstructions .Thevalueof'd'is1,00.
6.PRECISION
Onahomogeneous mixtureoftextilematerials ,theconfidence limitsofresultsobtainedbythis
methodarenotgreaterthan±1foraconfidence levelof95%.

NoC96/38 OfficialJournaloftheEuropeanCommunities 6.4.94
METHOD No5
ACETATE ANDTRIACETATE
(Methodusingbenzylalcohol)
1.FIELDOFAPPLICATION
Thismethodisapplicable ,afterremovalofnon-fibrous matter,tobinarymixturesof:
—acetate (19)
with
—triacetate (24)
2.PRINCIPLE
Theacetatefibreisdissolvedoutfromaknowndrymassofthemixture,withbenzylalcoholat52
±2°C.
Theresidueiscollected,washed,driedandweighed;itsmassisexpressed asapercentage ofthedry
massofthemixture .Thepercentage ofdryacetateisfoundbydifference .
3.APPARATUS ANDREAGENTS (otherthanthosespecifiedinthegeneralinstructions )
3.1.Apparatus
(i)Glass-stoppered conicalflaskofatleast200mlcapacity;
(ii)Mechanical shaker;
(iii)Thermostat orotherapparaturs forkeepingtheflaskatatemperature of52±2°C.
3.2.Reagents
(i)Benzylalcohol;
(ii)Ethanol .
4.TESTPROCEDURE
Followtheprocedure describedinthegeneralinstructions andproceedasfollows :
Tothespecimencontained intheconicalflask,add100mlofbenzylalcoholpergramofspecimen .
Insertthestopper,securetheflasktotheshakersothatitisimmersed inthewater-bath ,keptat52
±2°C,andshakefor20minutesatthistemperature .
(Insteadofusingamechanical shaker,theflaskmaybeshakenvigorously byhand.)
Decanttheliquidthroughtheweighedfiltercrucible.Addafurtherdoseofbenzylalcoholintheflask
andshakeasbeforeat52±2°Cfor20minutes .
Decanttheliquidthroughthecrucible .Repeatthecycleofoperations athirdtime.
Finallypourtheliquidandtheresidueintothecrucible;washanyremaining fibresfromtheflaskinto
thecruciblewithanextraquantityofbenzylalcoholat52±2°C.Drainthecruciblethoroughly .
Transferthefibresintoaflask,rinsewithethanolandaftershakingmanuallydecantthroughthefilter
crucible .
Repeatthisrinsingoperation twoorthreetimes.Transfertheresidueintothecrucibleanddrain
thoroughly .Drythecrucibleandtheresidueandcoolandweighthem.
5.CALCULATION ANDEXPRESSION OFRESULTS
Calculatetheresultsasdescribed inthegeneralinstructions .Thevalueof'd'is1,00.
6.PRECISION
Onahomogeneous mixtureoftextilematerials ,theconfidence limitsofresultsobtainedbythismethod
arenotgreaterthan±1foraconfidence levelof95%.

6.4.94 NoC96/39 OfficialJournaloftheEuropeanCommunities
METHOD No6
TRIACETATES ANDCERTAIN OTHER FIBRES
(Methodusingdichloromethane )
1.FIELDOFAPPLICATION
Thismethodisapplicable ,afterremovalofnon-fibrous matter,tobinarymixturesof:
1.triacetate (24)
with
2.wool(1),animalhair(2and3),silk(4),cotton(5),cupro(21),modal(22),viscose (25),acrylic
(26),polyamide ornylon(30),polyester (31)andglassfibre(40).
Note:
Triacetate fibreswhichhavereceivedafinishleadingtopartialhydrolysis ceasetobecompletely soluble
inthereagent.Insuchcases,themethodisnotapplicable .
2.PRINCIPLE
Thetriacetatefibreisdissolvedoutfromaknowndrymassofthemixture,withdichloromethane .The
residueiscollected,washed,driedandweighed;itsmass,corrected ifnecessary ,isexpressed asa
percentage ofthedrymassofthemixture.Thepercentage ofdryacetateisfoundbydifference .
3.APPARATUS ANDREAGENTS (otherthanthosespecifiedinthegeneralinstructions )
3.1.Apparatus
Glass-stoppered conicalflaskofatleast200mlcapacity;
3.2.Reagents
Dichloromethane .
4.TESTPROCEDURE
Followtheprocedure describedinthegeneralinstructions andproceedasfollows:
Tothespecimencontained inthe200mlglass-stoppered conicalflask,add100mlofdichloromethane
pergramofspecimen,insertthestopper,shaketheflaskevery10minutestowetoutthespecimenand
standfor30minutesatroomtemperature ,shakingtheflaskatregularintervals .Decanttheliquid
throughtheweighedfiltercrucible .Add60mlofdichloromethane totheflaskcontaining theresidue,
shakemanuallyandfilterthecontentsoftheflaskthroughthefiltercrucible.Transfertheresidualfibres
tothecruciblebywashingouttheflaskwithalittlemoredichloromethane .Drainthecruciblewith
suctiontoremoveexcessliquid,refillthecruciblewithdichloromethane andallowittodrainunder
gravity.
Finally,applysuctiontoeliminateexcessliquid,thentreattheresiduewithboilingwatertoeliminateall
thesolvent,applysuction,drythecrucibleandresidue,coolandweighthem.
5.CALCULATION ANDEXPRESSION OFRESULTS
Calculatetheresultsasdescribedinthegeneralinstructions .Thevalueof'd'is1,00,exceptinthecase
ofpolyester,forwhichthevalueof'd'is1,01.
6.PRECISION
Onahomogeneous mixtureoftextilematerials,theconfidence limitsofresultsobtainedbythismethod
arenotgreaterthan±1foraconfidence levelof95%.

NoC96/40 OfficialJournaloftheEuropeanCommunities 6.4.94
METHOD No7
CERTAIN CELLULOSE FIBRESANDPOLYESTER
(Methodusing75%m/msulphuricacid)
1.FIELDOFAPPLICATION
Thismethodisapplicable ,afterremovalofnon-fibrous matter,tobinarymixturesof:
1.cotton (5),flax(7),truehemp(8),ramie(14),cupro(21),modal(22),viscose (25)
with
2.polyester (31)
2.PRINCIPLE
Thecellulosefibreisdissolvedoutfromaknowndrymassofthemixture,with75%m/msulphuric
acid.Theresidueiscollected ,washed,driedandweighed ;itsmassisexpressed asapercentage ofthe
drymassofthemixture .Theproportion ofdrycellulosefibreisfoundbydifference .
3.APPARATUS ANDREAGENTS (otherthanthosespecifiedinthegeneralinstructions )
3.1.Apparatus
(i)Glass-stoppered conicalflaskofatleast500mlcapacity ;
(ii)Thermostat orotherapparatus formaintaining theflaskat50+5°C.
3.2.Reagents
(i)Sulphuricacid,75±2%m/m
Preparebyaddingcarefully,whilecooling,700mlofsulphuric acid(relativedensityat
20°C:1,84)to350mlofdistilledwater.Afterthesolutionhascooledtoroomtemperature ,
diluteto1litrewithwater.
(ii)Ammonia ,dilutesolution
Dilute80mlofammoniasolution (relativedensityat20°C:0,88)to1litrewithwater.
4.TESTPROCEDURE
Followtheprocedure describedinthegeneralinstructions andproceedasfollows:
Tothespecimencontained intheglass-stoppered conicalflaskofatleast500mlcapacity,add200ml
of75%sulphuricacidpergramofspecimen ,insertthestopperandcarefullyshaketheflasktowetout
thespecimen .Maintaintheflaskat50±5°Cforonehour,shakingitatregularintervalsofroughly
10minutes .Filterthecontentsoftheflaskthroughtheweighedfiltercruciblebymeansofsuction.
Transferanyresidualfibresbywashingouttheflaskwithalittle75%sulphuric acid.Drainthe
cruciblewithsuctionandwashtheresidueonthefilteroncebyfillingthecruciblewithafreshportion
ofsulphuricacid.Donotapplysuctionuntiltheacidhasdrainedundergravity.
Washtheresiduesuccessively severaltimeswithcoldwater,twicewithdiluteammoniasolution,and
thenthoroughly withcoldwater,drainingthecruciblewithsuctionaftereachaddition ,donotapply
suctionuntileachwashingliquorhasdrainedundergravity.Finally,draintheremaining liquidfromthe
cruciblewithsuction,drythecrucibleandresidue,andcoolandweighthem.
5.CALCULATION ANDEXPRESSION OFRESULTS
Calculatetheresultsasdescribed inthegeneralinstructions .Thevalueof'd'is1,00.
6.PRECISION
Onahomogeneous mixtureoftextilematerials ,theconfidence limitsofresultsobtainedbythismethod
arenotgreaterthan±1foraconfidence levelof95%.

6.4.94 OfficialJournaloftheEuropean Communities NoC96/41
METHOD No8
ACRYLICS ,CERTAIN MODACRYLICS ORCERTAIN CHLOROFIBRES ANDCERTAIN OTHER
FIBRES
(Methodusingdimethylformamide )
1.FIELDOFAPPLICATION
Thismethodisapplicable ,afterremovalofnon-fibrous matter,tobinarymixturesof:
1.acrylics (26),certainmodacrylics (27),orcertainchlorofibres (29)(!)
with
2.wool(1),animalhair(2and3),silk(4),cotton(5),cupro(21),modal(22),viscose (25),polyamide
ornylon(30)andpolyester (31).
Itisequallyapplicabletoacrylics,andcertainmodacrylics ,treatedwithpre-metallized dyes,butnot
tothosedyedwithafterchrome dyes.
2.PRINCIPLE
Theacrylic,modacrylic orchlorofibre isdissolvedoutfromaknowndrymassofthemixture,with
dimethylformamide heatedinawater-bath atboiling-point .Theresidueiscollected,washed,driedand
weighed .Itsmass,correctedifnecesary,isexpressed asapercentage ofthedrymassofthemixtureand
thepercentage ofdryacrylic,modacrylic orchlorofibre isfoundbydifference .
3.APPARATUS ANDREAGENTS (otherthanthosespecifiedinthegeneralinstructions )
3.1.Apparatus
(i)Glass-stoppered conicalflaskofatleast200mlcapacity ;
(ii)Waterbathatboilingpoint.
3.2.Reagent
Dimethylformamide (boilingpoint153±1°C)notcontaining morethan0,1%water.
Thisreagentistoxicandtheuseofahoodisthusrecommended .
4.TESTPROCEDURE
Followtheprocedure describedinthegeneralinstructions andproceedasfollows:
Tothespecimencontained intheglass-stoppered conicalflaskofatleast200mlcapacity,addpergram
ofspecimen 80mlofdimethylformamide ,pre-heated inthewater-bath atboilingpoint,insertthe
stopper,shaketheflasktowetoutthespecimenandheatinthewater-bath atboilingpointforone
hour.Shaketheflaskanditscontentsgentlybyhandfivetimesduringthisperiod.
Decanttheliquidthroughtheweighedfiltercrucible,retainingthefibresintheflask.Addafurther60
mlofdimethylformamide totheflaskandheatforafurther30minutes,shakingtheflaskandcontents
gentlybyhandtwiceduringthisperiod.
Filterthecontentsoftheflaskthroughthefiltercruciblebymeansofsuction.
Transferanyresidualfibretothecruciblebywashingoutthebeakerwithdimethylformamide .Drainthe
cruciblewithsuction.Washtheresiduewithabout1litreofhotwaterat70—80°C,fillingthe
crucibleeachtime.Aftereachadditionofwater,applysuctionbrieflybutnotuntilthewaterhas
drainedundergravity.Ifthewashingliquordrainsthroughthecrucibletooslowlyslightsuctionmaybe
applied.
Finallydrythecruciblewiththeresidue,coolandweighthem.
(])Thesolubilityofsuchmodacrylics orchlorofibres inthereagentshouldbecheckedbeforecarryingouttheanalysis.

NoC96/42 OfficialJournaloftheEuropeanCommunities 6.4.94
5.CALCULATION ANDEXPRESSION OFRESULTS
Calculatetheresultsasdescribed inthegeneralinstructions .Thevalueof'd'is1,00exceptinthe
followingcases:
wool 1,01
cotton 1,01
cupro 1,01
modal 1,01
polyester 1,01
6.PRECISION
Onahomogeneous mixtureoftextilematerials ,theconfidence limitsofresultsobtainedbythismethod
arenotgreaterthan±1foraconfidence levelof95%.

6.4.94 OfficialJournaloftheEuropeanCommunities NoC96/43
METHOD No9
CERTAIN CHLOROFIBRES ANDCERTAIN OTHER FIBRES
(Methodusing55,5/44,5mixtureofcarbondisulphide andacetone)
1.FIELDOFAPPLICATION
Thismethodisapplicable ,afterremovalofnon-fibrous matter,tobinarymixturesof:
1.certainchlorofibres (27),namelycertainpolyvinalchloridefibres,whetherafter-chlorinated or
not(1)
with
2.wool(1),animalhair(2and3),silk(4),cotton(5),cupro(21),modal(22),viscose(25),acrylic
(26),polyamide ornylon(30),polyester (31),glassfibre(40).
Whenthewoolorsilkcontentofthemixtureexceeds25%,methodNo2shouldbeused.
Whenthepolyamide ornylon,contentofthemixtureexceeds25%,methodNo4shouldbeused.
2.PRINCIPLE
Thechlorofibre isdissolvedoutfromaknowndrymassofthemixture,withanazeotropic mixtureof
carbondisulphide andacetone.Theresidueiscollected ,washed,driedandweighed;itsmass,corrected
ifnecessary ,isexpressed asapercentage ofthedrymassofthemixture.Thepercentage ofdrypolyvinyl
chloridefibreisfoundbydifference .
3.APPARATUS ANDREAGENTS (otherthanthosespecifiedinthegeneralinstructions )
3.1.Apparatus
(i)Glass-stoppered conicalflaskofatleast200mlcapacity;
(ii)Mechanical shaker.
3.2.Reagents
(i)Azeotropic mixtureofcarbondisulphide andacetone (55,5%byvolumecarbondisulphide to
44,5%acetone);
Asthisreagentistoxic,theuseofahoodisrecommended .
(ii)Ethanol (92%byvolume)ormethanol .
4.TESTPROCEDURE
Followtheprocedure describedinthegeneralinstructions andproceedasfollows:
Tothespecimencontained intheglass-stoppered conicalflaskofatleast200mlcapacity,add100ml
oftheazeotropic mixturepergramofspecimen .Sealtheflasksecurely,andshaketheflaskona
mechanical shaker,orvigorously byhand,for20minutesatroomtemperature .Decantthesupernatant
liquidthroughtheweighedfiltercrucible.
Repeatthetreatmentwith100mloffreshreagent.Continuethiscycleofoperations untilnopolymer
depositisleftonawatchglasswhenadropoftheextraction liquidisevaporated .Transfertheresidue
tothefiltercrucibleusingmorereagent,applysuctiontoremovetheliquid,andrinsethecrucibleand
residuewith20mlofalcoholandthenthreetimeswithwater.Allowthewashingliquortodrainunder
gravitybeforedrainingwithsuction.Drythecrucibleandresidueandcoolandweighthem.
Note:
Withcertainmixtureshavingahighchlorofibre contenttheremaybesubstantial shrinkage ofthe
specimenduringthedryingprocedure ,asaresultofwhichthedissolution ofchlorofibre bythesolvent
isretarded .Thisdoesnot,however,affecttheultimatedissolution ofthechlorofibre inthesolvent.
5.CALCULATION ANDEXPRESSION OFRESULTS
Calculatetheresultsasdescribedinthegeneralinstructions .Thevalueof'd'is1,00.
6.PRECISION
Onahomogeneous mixtureoftextilematerials ,theconfidence limitsoftheresultsobtainedbythis
methodarenotgreaterthan±1foraconfidence levelof95%.
(>)Beforecarryingouttheanalysis,thesolubilityofthechlorofibres inthereagentshouldbechecked .

NoC96/44 OfficialJournaloftheEuropeanCommunities 6.4.94
METHOD No10
ACETATE ANDCERTAIN CHLOROFIBRES
(Methodusingglacialaceticacid)
1.FIELD -OFAPPLICATION
Thismethodisapplicable ,afterelemination ofnon-fibrous matter,tobinarymixturesof:
1.acetate (19)
with
2.certainchlorofibres (27)namelypolyvinylchloride,whetherafter-chlorinated ornot.
2.PRINCIPLE
Theacetatefibreisdissolvedoutfromaknowndrymassofthemixture,withglacialaceticacid.The
residueiscollected ,washed,driedandweighed;itsmass,corrected ifnecessary ,isexpressed asa
percentage ofthedrymassofthemixture .Thepercentage ofdryacetateisfoundbydifference .
3.APPARATUS ANDREAGENTS (otherthanthosespecifiedinthegeneralinstructions )
3.1.Apparatus
(i)Glass-stoppered conicalflaskofatleast200mlcapacity ;
(ii)Mechanical shaker.
3.2.Reagent
Glacialaceticacid(over99%).Thisreagentshouldbehandledwithcaresinceitishighly
caustic .
4.TESTPROCEDURE
Followtheprocedure describedinthegeneralinstructions andproceedasfollows :
Tothespecimencontained intheglass-stoppered conicalflaskofatleast200mlcapacity,add100ml
glacialaceticacidpergramofspecimen .Sealtheflasksecurelyandshakeonthemechanical shaker,or
vigorously byhand,for20minutesatroomtemperature .Decantthesupernatant liquidthroughthe
weighedfiltercrucible .Repeatthistreatment twice,using100mloffreshreagenteachtime,making
threeextractions inall.Transfertheresiduetothefiltercrucible ,drainwithsuctiontoremovethe
liquidandrinsethecrucibleandtheresiduewith50mlofglacialaceticacid,andthenthreetimeswith
water.Aftereachrinse,allowtheliquidtodrainundergravitybeforeapplyingsuction.Drythe
crucibleandresidue,andcoolandweighthem.
5.CALCULATION ANDEXPRESSION OFRESULTS
Calculatetheresultsasdescribed inthegeneralinstructions .Thevalueof'd'is1,00.
6.PRECISION
Onahomogeneous mixtureoftextilematerials ,theconfidence limitsofresultsobtainedbythismethod
arenotgreaterthan±1foraconfidence levelof95%.

6.4.94 OfficialJournaloftheEuropean Communities NoC96/45
METHOD No11
SILKANDWOOLORHAIR
(Methodusing75%m/msulphuricacid)
1.FIELDOFAPPLICATION
Thismethodisapplicable ,afterremovalofnon-fibrous matter,tobinarymixturesof:
1.silk(4)
with
2.wool(1)oranimalhair(2and3).
2.PRINCIPLE
Thesilkfibreisdissolvedoutfromaknowndrymassofthemixture,with75%m/msulphuric
acid0)
Theresidueiscollected,washed,driedandweighed :Itsmass,corrected ifnecessary ,isexpressed asa
percentage ofthedrymassofthemixture.Thepercentage ofdrysilkisfoundbydifference .
3.APPARATUS ANDREAGENTS (otherthanthosespecifiedinthegeneralinstructions )
3.1.Apparatus
Glass-stoppered conicalflaskofatleast200mlcapacity .
3.2.Reagents
(i)Sulphuricacid(75±2%m/m)
Preparebyaddingcarefully,whilecooling,700mlsulphuricacid(densityat20°C:1,84)to
350mldistilledwater.
Aftercoolingtoroomtemperature ,dilutethesolutionto1litrewithwater.
(ii)Sulphuricacid,dilutesolution:add100mlsulphuricacid(densityat20°C:1,84)slowlyto
1900mdistilledwater.
(iii)Ammonia ,dilutesolution:dilute200mlconcentrated ammonia (densityat20°C:0,880)to
1000mlwithwater.
4.TESTPROCEDURE
Followtheprocedure describedinthegeneralinstruction andproceedasfollows :
Tothespecimencontained inaglass-stoppered conicalflaskofatleast200mlcapacity,add100mlof
75%m/msulphuricacidpergramofspecimenandinsertthestopper.Shakevigorously andstandfor
30minutesatroomtemperature .Shakeagainandstandfor30minutes.Shakealasttimeandfilterthe
contentsoftheflaskthroughtheweighedfiltercrucible .Washanyremaining fibresfromtheflaskwith
the75%sulphuricacidreagent.Washtheresidueonthecruciblesuccessively with50mlofthedilute
sulphuricacidreagent,50mlwaterand50mlofthediluteammoniasolution .Eachtimeallowthe
fibrestoremainincontactwiththeliquidforabout10minutesbeforeapplyingsuction.Finallyrinse
withwater,leavingthefibresincontactwiththewaterforabout30minutes.Drainthecruciblewith
suction,drythecrucibleandresidue,andcoolandweighthem.
5.CALCULATION ANDEXPRESSION OFRESULTS
Calculatetheresultsasdescribed inthegeneralinstructions .Thevalueof'd'is0,985forwool(J).
6.PRECISION
Onahomogeneous mixtureoftextilematerials ,theconfidence limitsofresultsobtainedbythismethod
arenotgreaterthan±1foraconfidence levelof95%.
Wildsilks,suchastussahsilk,arenotcompletely solublein75%m/msulphuricacid.

NoC96/46 OfficialJournaloftheEuropeanCommunities 6.4.94
METHOD No12
JUTEANDCERTAIN ANIMAL FIRBRES
(Methodbydetermining nitrogencontent)
1.FIELDOFAPPLICATION
Thismethodisapplicable ,afterremovalofnon-fibrous matter,tobinarymixturesof:
1.jute(9)
with
2.certainanimalfibres.
Theanimal-fibre component mayconsistsolelyofhair(2and3)orwool(1)orofanymixtureofthe
two.Thismethodisnotapplicable totextilemixturescontaining non-fibrous matter(dyes,finishes,etc.)
withanitrogenbase.
2.PRINCIPLE
Thenitrogencontentofthemixtureisdetermined andfromthisandtheknownorassumednitrogen
contentsofthetwocomponents ,theproportinofeachcomponent iscalculated .
3.APPARATUS ANDREAGENTS (otherthanthosespecifiedinthegeneralinstructions )
3.1.Apparatus
(i)Kjeldahldigestionflask,200—300mlcapacity ;
(ii)Kjeldahldistillation apparatus withsteaminjection;
(iii)Titrationapparatus ,allowingprecisionof0,05ml.
3.2.Reagents
(i)Toluene ;
(ii)Methanol ;
(iii)Sulphuric acid,relativedensityat20°C:1,840);
(iv)Potassium sulphate t1);
(v)Seleniumdioxide (]);
(vi)Sodiumhydroxide solution (400g/litre).Dissolve400gofsodiumhydroxide in400—500ml
ofwateranddiluteto1litrewithwater;
(vii)Mixedindicator .Dissolve0,1gofmethylredin95mlofethanoland5mlofwater,andmix
with0,5gofbromocresol greendissolvedin475mlofethanoland25mlofwater;
(viii)Boricacidsolution .Dissolve20gboricacidin1litreofwater;
(ix)Sulphuricacid,0,02N(standardvolumetric solution).
4.PRE-TREATMENT OFTESTSAMPLE
Thefollowingpre-treatment issubstituted forthepre-treatment described inthegeneralinstructions :
Extracttheair-drysampleinaSoxhletapparatus withamixtureof1volumeoftolueneand3volumes
ofmethanolfor4hoursataminimumrateof5cyclesperhour.Allowthesolventtoevaporatefrom
thesampleinair,andremovethelasttracesinanovenat105±3°C.Thenextractthesampleinwater
(50mlpergofsample)byboilingunderrefluxfor30minutes .Filter,returnthesampletotheflask,
andrepeattheextraction withanidenticalvolumeofwater.Filter,removeexcesswaterfromthesample
bysqueezing ,suction,orcentrifuging andthenallowthesampletobecomeair-dry.
(•)Thesereagentsshouldbenitrogen-free

6.4.94 OfficialJournaloftheEuropean Communities NoC96/47
Note:
Thetoxiceffectsoftolueneandmethanolshouldbeborneinmindandfullprecautions shouldbetaken
intheiruse.
5.TESTPROCEDURE
5.1.Generalinstructions
Followtheprocedure described inthegeneralinstructions asregardstheselection,dryingand
weighingofthespecimen .
5.2.Detailedprocedure
TransferthespecimentoaKjeldahldigestionflask.Tothespecimenweighingatleast1gcontained
inthedigestionflask,add,inthefollowingorder,2,5gpotassium sulphate,0,1—0,2gselenium
dioxideand10mlsulphuricacid(relativedensity1,84).Heattheflask,gentlyatfirst,untilthe
wholeofthefibreisdestroyed ,andthenheatitmorevigorously untilthesolutionbecomesclear
andalmostcolourless .Heatitforafurther15minutes .Allowtheflasktocool,dilutethecontents
carefullywith10—20mlwater,cool,transferthecontentsquantitatively toa200mlgraduated
flaskandmakeuptovolumewithwatertoformthedigestsolution .
Placeabout20mlofboricacidsolutionina100mlconicalflaskandplacetheflaskunderthe
condenser oftheKjeldahldistillation apparatus sothatthedeliverytubedipsjustbelowthesurface
oftheboricacidsolution .Transferexactly10mlofdigestsolutiontothedistillation flask,addnot
lessthan5mlofsodiumhydroxide solutiontothefunnel,liftthestopperslightlyandallowthe
sodiumhydroxide solutiontorunslowlyintotheflask.Ifthedigestsolutionandsodiumhydroxide
solutionremainastwoseparatelayers,mixthembygentleagitation .Heatthedistillation flask
gentlyandpassitintosteamfromthegenerator .Collectabout20mlofdistillate,lowertheconical
flasksothatthetipofthedeliverytubeofthecondenser isabout20mmabovethesurfaceofthe
liquidanddistilfor1minutemore.Rinsethetipofthedeliverytubewithwater,catchingthe
washingsintheconicalflask.Removetheconicalflaskandreplaceitwithanotherconicalflask
containing roughly10mlofboricacidsolutionandcollectabout10mldistillate .
Titratethetwodistillatesseparately with0,02Nsulphuricacid,usethemixedindicator .Recordthe
totaltitreforthetwodistillates .Ifthetitrefortheseconddistillateismorethan0,2ml,repeatthe
testandstartthedistillation againusingafreshaliquotofdigestsolution .
Carryoutablankdetermination ,i.e.digestionanddistillation usingthereagentsonly.
6.CALCULATION ANDEXPRESSION OFRESULTS
6.1.Calculatethepercentage nitrogencontentinthedryspecimenasfollows:
28(V-b)N
A/o"W
where
A=percentage nitrogeninthecleandryspecimen ,
V=totalvolumeinmlofstandardsulphuricacidusedinthedetermination ,
b=totalvolumeinmlofstandardsulphuricacidusedintheblankdetermination ,
N=normalityofstandardsulphuricacid,
W=drymass(g)ofspecimen .
6.2.Usingthevaluesof0,22%forthenitrogencontentofjuteand16,2%forthenitrogencontentof
animalfibre,bothpercentages beingexpressed onthedrymassofthefibre,calculatethe
composition ofthemixtureasfollows:
PA%= x100;16,2—0,22
where
PA=percentage ofanimalfibreinthecleandryspecimen .
7.PRECISION
Onahomogeneous mixtureoftextilematerials ,theconfidence limitsofresultsobtainedbythismethod
arenotgreaterthan±1foraconfidence levelof95%.

NoC96/48 OfficialJournaloftheEuropeanCommunities 6.4.94
METHOD No13
POLYPROPYLENE FIBRESANDCERTAIN OTHER FIBRES
(Xylenemethod)
1.FIELDOFAPPLICATION
Thismethodisapplicable ,afterremovalofnon-fibrous matter,tobinarymixturesof:
1.polypropylene fibres(33)
with
2.wool(1),animalhair(2and3),silk(4),cotton (5),acetate (19),cupro(21),mooal(22),triacetate
(24),viscose (25),acrylic(26),polyamide ornylon(30),polyester (31)andglassfibre(40).
2.PRINCIPLE
Thepolypropylene fibreisdissolvedoutfromaknowndrymassofthemixturewithboilingxylene.The
residueiscollected,washed,driedandweighed ;itsmass,corrected ifnecessary ,isexpressed asa
percentage ofthedrymassofthemixture .Thepercentage ofpolypropylene isfoundbydifference .
3.APPARATUS ANDREAGENTS (otherthanthosespecifiedinthegeneralinstructions )
3.1.Apparatus
(i)Glass-stoppered conicalflaskofatleast200mlcapacity ;
(ii)Refluxcondenser (suitableforliquidsofhighboilingpoint),fittingtheconicalflask(i).
3.2.Reagent
Xylenedistillingbetween137and142°C.
Note:
Thisreagentishighlyflammable andhasatoxicvapour.Suitableprecautions mustbetakeninits
use.
4.TESTPROCEDURE
Followtheprocedure describedinthegeneralinstructions thenproceedasfollows :
Tothespecimencontained intheconcicalflask.(3.1.(i)),add100mlofxylene(3.2)pergramof
specimen .Attachthecondenser (3.1(ii)),bringthecontentstotheboilandmaintainatboilingpointfor
threeminutes .Immediately decantthehotliquidthroughtheweighedfiltercrucible (seeNote1).Repeat
thistreatmenttwicemore,eachtimeusingafresh50mlportionofsolvent.
Washtheresidueremaining intheflasksuccessively with30mlofboilingxylene(twice),thenwith75
mloflightpetroleum (1.3.2.1ofgeneralinstructions )(twice).Afterthesecondwashwithlight
petroleum ,filterthecontentsoftheflaskthroughthecrucible,transferanyresidualfibrestothecrucible
withtheaidofasmallquantitiyoflightpetroleum andallowthesolventtoevaporate .Drythecrucible
andresidue,coolandweighthem.
Notes:
1.Thefiltercruciblethroughwhichthexyleneistobedecantedmustbepre-heated .
2.Afterthetreatment withboilingxylene,ensurethattheflaskcontaining theresidueiscooled
sufficiently beforethelightpetroleum isintroduced .
3.Inordertoreducethefireandtoxicityhazardstotheoperator,ahotextractionapparatus usingthe
appropriate procedures ,givingidenticalresults,maybeused(1).
(!)Seeforexampletheapparatus describedin'MelliandTextilberichte '56(1975).p.643.

6.4.94 OfficialJournaloftheEuropean Communities NoC96/49
5.CALCULATION ANDEXPRESSION OFRESULTS
Calculatetheresultsasdescribedinthegeneralinstructions .Thevalueof'd'is1,00.
6.PRECISION
Onahomogeneous mixtureoftextilematerials,theconfidence limitsofresultsobtainedbythismethod
arenotgreaterthan±1foraconfidence levelof95%.

NoC96/50 OfficialJournaloftheEuropeanCommunities 6.4.94
METHOD No14
CHLOROFIBRES (HOMOPOLYMERS OFVINYLCHLORIDE )ANDCERTAIN OTHERFIBRES
(Concentrated sulphuricacidmethod )
1.FIELDOFAPPLICATION
Thismethodisapplicable ,afterremovalofnon-fibrous matter,tobinarymixturesof:
1.chlorofibres (27)basedonhomopolymers ofvinylchloride (after-chlorinated ornot)
with
2.cotton(5),acetate (19),cupro(21),modal(22),triacetate (24),viscose (25),certainacrylics (26),
certainmodacrylics (29),plyamideornylon(30)andpolyester (31).
Themodacrylics concerned arethosewhichgivealimpidsolutionwhenimmersed inconcentrated
sulphuricacid(relativedensity1,84at20°C).
ThismethodcanbeusedinplaceofmethodNos8and9.
2.PRINCIPLE
Theconstituent otherthanthechlorofibre (i.e.thefibresmentioned underpoint2ofparagraph 1)is
dissolvedoutfromaknowndrymassofthemixturewithconcentrated sulphuricacid(relativedensity
1,84at20°C).Theresidue,consisting ofthechlorofibre ,iscollected ,washed,driedandweighed;its
mass,correctedifnecessary ,isexpressed asapercentage ofthedrymassofthemixture .Thepercentage
ofthesecondconstituent isobtainedbydifference .
3.APPARATUS ANDREAGENTS (otherthanthosespecifiedinthegeneralinstructions )
3.1.Apparatus
(i)Glass-stoppered conicalflaskofatleast200mlcapacity;
(ii)Glassrodwithflattenedend.
3.2.Reagents
(i)Sulphuric acid,concentrated (relativedensity1,84at20°C);
(ii)Sulphuricacid,approximately 50%(m/m)aqueoussolution .
Preparebyaddingcarefully,whilecooling,400mlofsulphuricacid(relativedensity1,84at
20°C)to500mlofdistilledorde-ionized water.Aftercoolingtoroomtemperature ,dilutethe
solutiontoonelitrewithwater;
(iii)Ammonia ,dilutesolution .
Dilute60mlofconcentrated ammoniasolution (relativedensity0,880at20°C)toonelitre
withdistilledwater.
4.TESTPROCEDURE
Followtheprocedure describedinthegeneralinstructions ,thenproceedasfollows:
Tothespecimencontained intheflask(3.1.(i))add100mlofsulphuricacid(3.2.(i))pergramof
specimen .
Allowthecontentsoftheflasktoremainatroomtemperature for10minutesandduringthattimestir
thetestspecimenoccasionally bymeansoftheglassrod.Ifawovenorknittedfabricisbeingtreated,
wedgeitbetweenthewalloftheflaskandtheglassrodandexertalightpressureinordertoseparate
thematerialdissolvedbythesulphuricacid.
Decanttheliquidthroughtheweighedfiltercrucible .Addtotheflaskafreshportionof100mlof
sulphuricacid(3.2.(i))andrepeatthesameoperation .Transferthecontentsoftheflasktothefilter
crucibleandtransferthefibrousresiduetherewiththeaidoftheglassrod.Ifnecessary ,addalittle
concentrated sulphuricacid(3.2.(i))totheflaskinordertoremoveanyfibresadheringtothewall.
Drainthefiltercruciblewithsuction;removethefiltratebyemptyingorchangingthefilter-flask ,wash
theresidueinthecruciblesuccessively with50%sulphuricacidsolution (3.2.(ii)),distilledorde-ionized

6.4.94 OfficialJournaloftheEuropean Communities NoC96/51
water(1.3.2.3ofthegeneralinstructions ,ammoniasolution (3.2.(iii))andfinallywashthoroughly with
distilledorde-ionized water,drainingthecruciblewithsuctionaftereachaddition .(Donotapply
suctionduringthewashingoperation ,butonlyaftertheliquidhasdrainedoffbygravity.)
Drythecrucibleandresidue,coolandweighthem.
Donotapplysuctionduringorbetweenthewashingoperations .Allowtheliquidtodrainundergravity
andthenapplysuction.
Finallydrythecruciblewiththeresidue,coolandweighthem.
5.CALCULATION ANDEXPRESSION OFRESULTS
Calculatetheresultsasdescribedinthegeneralinstructions .Thevalueof'd'is1,00withthefollowing
exceptions :
silk1,01
acrylic0,98.
6.PRECISION
Onhomogeneous mixturesoftextilefibres,theconfidence limitsofresultsobtainedbythismethodare
notgreaterthan±1foraconfidence levelof95%.

NoC96/52 OfficialJournaloftheEuropeanCommunities 6.4.94
METHOD No15
CHLOROFIBRES ,CERTAIN MODACRYLICS ,CERTAIN ELASTANES ,ACETATES ,TRIACETATES
ANDCERTAIN OTHER FIBRES
(Methodusingcyclohexanone )
1.FIELDOFAPPLICATION
Thismethodisapplicable ,afterremovalofnon-fibrous matter,tobinarymixturesof:
1.acetate(19),triacetate (24),chlorofibre (27),certainmodacrylics (29),certainelastanes (39)
with
2.wool(1),animalhair(2and3),silk(4),cotton(5),cupro(21),modal(22),viscose(25),polyamide
ornylon(30),acrylic(26)andglassfibre(40).
Wheremodacrylics orelastanesarepresentapreliminary testmustfirstbecarriedouttodetermine
whetherthefibreiscompletely solubleinthereagent.
Itisalsopossibletoanalysemixturescontaining chlorofibres byusingmethodNo9or14.
2.PRINCIPLE
Theacetateandtriacetatefibres,chlorofibres ,certainmodacrylics ,andcertainelastanesaredissolved
outfromaknowndrymasswithcyclohexanone atatemperature closetoboilingpoint.Theresidueis
collected ,washed,driedandweighed ;itsmass,correctedifnecessary ,isexpressed asapercentage ofthe
drymassofthemixture.Thepercentage ofchlorofibre ,modacrylic ,elastane,acetateandtriacetate is
foundbydifference .
3.APPARATUS ANDREAGENTS (otherthanthosespecifiedinthegeneralinstructions )
3.1.Apparatus
(i)Hotextraction apparatus suitableforuseinthetestprocedure insection4.(Seefigure:thisisa
variantoftheapparatus describedinMelliandTextilberichte 56(1975)643—645);
(ii)Filtercrucibletocontainthespecimen .
(iii)Porousbaffle(porositygrade1);
(iv)Refluxcondenser thatcanbeadaptedtothedistillation flask;
(v)Heatingdevice.
3.2.Reagents
(i)Cyclohexanone ,boilingpoint156°C;
(ii)Ethylalcohol,50%byvolume.
NB:Cyclohexanone isflammable andtoxic.Suitableprecautions mustbetakeninitsuse.
4.TESTPROCEDURE
Followtheprocedure described inthegeneralinstructions andthenproceedasfollows:"
Pourintothedistillation flask100mlofcyclohexanone pergramofmaterial,inserttheextraction
container inwhichthefiltercrucible,containing thespecimenandtheporousbaffleslightlyinclined,
havepreviously beenplaced.Inserttherefluxcondenser .Bringtotheboilandcontinueextraction for
60minutesataminimumrateof12cyclesperhour.Afterextraction andcoolingremovetheextraction
container ,takeoutthefiltercrucibleandremovetheporousbaffle.Washthecontentsfothefilter
cruciblethreeorfourtimeswith50%ethylalcoholheatedtoabout60°Candsubsequently with1litre
ofwaterat60°C.

6.4.94 OfficialJournaloftheEuropeanCommunities NoC96/53
5.CALCULATION ANDEXPRESSION OFRESULTS
Calculatetheresultsasdescribed inthegeneralinstructions .Thevalueof'd'is1,00.
6.PRECISION
Onahomogeneous mixtureoftextilematerials ,theconfidence limitsofresultsobtainedbythismethod
arenotgreaterthan±1foraconfidence levelof95%.

NoL86/54 OfficialJournaloftheEuropeanCommunities 31.3.94
Sketchreferredtoinpoint3.1.(i)ofmethodNo15

6.4.94 OfficialJournaloftheEuropean Communities NoC96/55
ANNEX III
PARTA
REPEALED DIRECTIVES
(referredtoinArticle8)
—Directive 72/276/EECanditssuccessive amendments :
—Directive 79/76/EEC,
—Directive 81/75/EEC,
—Directive 87/184/EEC.
PARTB
TIMELIMITSFORTRANSPOSAL
Directive Deadlineforimplementation
—72/276/EEG(OJNoL173,31.7.1972,p.1)18January1974
—79/76/EEC(OJNoL17,24.1.1979,p.17) 28June1979
—81/75/EEC(OJNoL57,4.3.1981,p.23) 27February1982
—87/184/EEC(OJNoL75,17.3.1987,p.21) 1September 1988

NoC96/56 OfficialJournaloftheEuropean Communities 6.4.94
ANNEX IV
CORRELATION TABLE
ThisDirective Directive 72/276/EEC
Article 1 Article 1
Article2 Article2
Article3 Article3
Article4 Article4
Article5 Article5
Article6 Article6
Article7 Article7(2)
Article8—
Article9 Article8
AnnexI AnnexI
AnnexII(1) AnnexII(1)
AnnexII(2) AnnexII(2)
AnnexIImethodNo1 AnnexIImethodNo1
AnnexIImethodNo2 AnnexIImethodNo2
AnnexIImethodNo3 AnnexIImethodNo3
AnnexIImethodNo4 AnnexIImethodNo4
AnnexIImethodNo5 AnnexIImethodNo5
AnnexIImethodNo6 AnnexIImethodNo6
AnnexIImethodNo7 AnnexIImethodNo7
AnnexIImethodNo8 AnnexIImethodNo8
AnnexIImethodNo9 AnnexII,methodNo9
AnnexIImethodNo10 AnnexIImethodNo10
AnnexIImethodNo11 AnnexIImethodNo11
AnnexIImethodNo12 AnnexIImethodNo13
AnnexIImethodNo13 AnnexIImethodNo14
AnnexIImethodNo14 AnnexIImethodNo15
AnnexIImethodNo15 AnnexIImethodNo16
AnnexIII —
AnnexIV —