direct ec european parliament council decemb method quantit analysi binari textil fibr mixtur european parliament council european union regard treati establish european commun articl thereof regard propos commiss regard opinion econom social committe act accord procedur laid articl treati council direct eec juli approxim law member state relat method quantit analysi binari textil fibr mixtur amend frequent substanti reason clariti ration direct consolid direct ec european parliament council decemb textil name requir label fibr composit textil product check carri analysi conform product indic label method offici test carri member state determin fibr composit textil product uniform pre treatment sampl quantit analysi direct ec method sampl analysi member state purpos determin fibr composit product separ direct annex ii direct lai uniform method analysi textil product compos binari mixtur market technic progress necessit frequent adapt technic specif defin separ direct method textil analysi order facilit implement measur requir effect procedur laid establish committe direct relat textil name label close cooper member state commiss case binari mixtur uniform method analysi commun level laboratori respons test determin composit mixtur valid method dispos indic analysi report result obtain degre accuraci method provis direct accord opinion committe direct relat textil name label direct affect oblig member state time limit transposit direct set annex iii part adopt direct articl direct concern method quantit analysi binari textil fibr mixtur includ prepar test sampl test specimen articl test sampl mean sampl suitabl size analysi laboratori bulk sampl turn batch articl analysi test specimen mean part test sampl requir give individu test result articl member state step ensur accord direct ec provis annex ii method quantit analysi binari textil fibr mixtur includ prepar test sampl test specimen appli offici test determin composit textil product put market articl laboratori respons test binari mixtur uniform method analysi commun level determin composit mixtur valid method dispos indic analysi report result obtain degre accuraci method articl committe direct relat textil name label hereinaft call committe set consist repres member state repres commiss chairman committe adopt rule procedur adapt technic progress method quantit analysi provid annex ii made accord procedur laid articl articl procedur laid articl invok matter refer committe chairman initi request repres member state repres commiss submit committe draft measur committe deliv opinion draft time limit chairman lai urgenc matter opinion deliv major laid articl treati case decis council requir adopt propos commiss vote repres member state committe weight manner set articl chairman vote commiss adopt measur envisag accord opinion committe measur envisag accord opinion committe opinion deliv commiss delai propos council measur adopt council act qualifi major month propos submit council act propos measur adopt commiss articl member state commun commiss text main provis nation law adopt field cover direct articl direct list annex iii part repeal prejudic oblig member state time limit transposit set annex iii part refer repeal direct constru refer direct read accord correl tabl set annex iv articl direct address member state direct enter forc dai public offici journal european commun brussel decemb european parliament presid haensch council presid yate oj oj opinion european parliament februari oj council common posit februari oj decis european parliament june oj council decis octob oj direct amend direct eec oj offici journal annex prepar test sampl test specimen determin fibr composit textil product field applic annex procedur obtain laboratori test sampl suitabl size pre treatment quantit analysi mass exceed laboratori bulk sampl select test specimen laboratori test sampl pre treat remov fibrou matter definit bulk sourc quantiti materi judg basi seri test result compris materi deliveri cloth cloth woven beam consign yarn bale group bale raw fibr laboratori bulk sampl portion bulk sourc repres laboratori size natur laboratori bulk sampl suffici overcom adequ variabl bulk sourc facilit eas handl laboratori laboratori test sampl portion laboratori bulk sampl subject pre treatment remov fibrou matter test specimen size natur laboratori test sampl suffici overcom adequ variabl laboratori bulk sampl test specimen portion materi requir give individu test result select laboratori test sampl principl laboratori test sampl select repres laboratori bulk sampl test specimen laboratori test sampl repres laboratori test sampl sampl loos fibr unorient fibr obtain laboratori test sampl select random tuft laboratori bulk sampl mix laboratori test sampl mean laboratori carder subject web mixtur includ loos fibr fibr adher equip mix pre treatment select test specimen proport respect mass web mixtur loos fibr fibr adher equip card web remain intact pre treatment select test specimen manner card web disturb pre treatment select test specimen remov random small tuft suitabl approxim equal size combin orient fibr card web sliver rove randomli select part laboratori bulk sampl cut cross section mass approxim subject laboratori test sampl form pre treatment recombin cross section lai side side obtain test specimen cut portion length sampl yarn yarn packag bank sampl packag bulk laboratori sampl withdraw continu equal length packag wind skein number turn wrap reel mean unit length side side singl skein tow form laboratori test sampl ensur equal length packag skein tow subject laboratori test sampl pre treatment test specimen laboratori test sampl cut bunch thread equal length skein tow take care bunch thread sampl text yarn number packag select laboratori bulk sampl obtain test sampl length yarn withdrawn packag gt num gt gt den gt nt cm nt high wind heavier skein cut place make tow suitabl mass end sampl form tow secur ti pre treatment test specimen place remot tie band yarn warp laboratori test sampl cut length end warp cm long compris yarn warp selvedg yarn reject tie bunch thread end sampl larg pre treatment divid portion ti pre treatment reunit portion pre treat separ test specimen cut suitabl length laboratori test sampl end remot tie band compris thread warp warp thread tex length specimen mass gt num gt gt den gt nt cm sampl fabric laboratori bulk sampl consist singl cut repres cloth cut diagon strip corner remov selvedg strip laboratori test sampl obtain laboratori test sampl strip area gt num gt gt den gt cm mass cloth subject laboratori test sampl pre treatment cut strip transvers equal length superimpos test specimen part layer materi cut layer specimen equal length layer fabric woven design make width laboratori test sampl measur parallel warp direct warp repeat design condit satisfi laboratori test sampl larg treat cut equal part pre treat separ superimpos part select test specimen take care part design coincid laboratori bulk sampl consist cut treat cut give result separ sampl made finish articl bulk laboratori sampl complet made finish articl repres fraction determin percentag part articl fibr content order check complianc articl direct ec european parliament council decemb textil name select laboratori test sampl repres part made finish articl composit shown label articl label select laboratori test sampl repres part label articl composit determin uniform select laboratori test sampl part articl determin rel proport part relat articl question calcul percentag take account rel proport sampl part subject laboratori test sampl pre treatment select test specimen repres pre treat laboratori test sampl case pre treat individu test specimen made finish articl section point laboratori carder replac fibr blender fibr mix method tuft reject packag mount conveni creel number wound simultan annex ii method quantit analysi binari fibr mixtur gener introduct method quantit analysi fibr mixtur base main process manual separ chemic separ fibr method manual separ gener accur result chemic method textil compon fibr form intim mixtur case yarn compos element made type fibr fabric fibr warp kind weft knit fabric capabl unravel made yarn type gener method chemic quantit analysi base select solut individu compon remov compon insolubl residu weigh proport solubl compon calcul loss mass part annex inform common analys method fibr mixtur dealt annex composit conjunct succeed individu section annex detail procedur applic fibr mixtur occasion analysi base principl select solut case full detail section mixtur fibr process lesser extent finish textil fibrou matter fat wax dress water solubl matter occur natur ad facilit process fibrou matter remov analysi reason method remov oil fat wax water solubl matter addit textil resin matter ad confer special properti matter includ dyestuff except case interfer action reagent solubl compon partial complet remov reagent type ad matter error remov sampl analys imposs remov ad matter method quantit chemic analysi annex longer applic dye dy fabric consid integr part fibr remov analys conduct basi dry mass procedur determin dry mass result obtain appli dry mass fibr agre allow list annex ii direct ec european parliament council decemb textil name proceed analysi fibr present mixtur identifi method insolubl compon mixtur partial dissolv reagent dissolv solubl compon reagent chosen effect insolubl fibr loss mass occur analysi result correct correct factor purpos factor determin laboratori treat reagent method analysi fibr clean pre treatment correct factor appli undegrad fibr correct factor fibr degrad process procedur appli singl determin determin separ test specimen made case manual separ case chemic separ confirm technic imposs recommend altern procedur constitu residu standard method dissolv gener inform method quantit chemic analysi textil fibr mixtur inform common method quantit chemic analysi fibr mixtur scope field applic field applic method specifi fibr method applic principl identif compon mixtur fibrou materi remov suitabl pre treatment compon select solut insolubl residu weigh proport solubl compon calcul loss mass present technic difficulti prefer dissolv fibr present greater proport obtain fibr present smaller proport residu materi equip apparatu filter crucibl weigh bottl larg crucibl apparatu give ident result vacuum flask desicc indic silica gel ventil oven dry specimen analyt balanc accur soxhlet extractor apparatu give ident result reagent light petroleum redistil boil rang reagent section method reagent chemic pure distil deioniz water condit test atmospher dry mass determin unnecessari condit specimen conduct analys condit atmospher laboratori test sampl laboratori test sampl repres laboratori bulk sampl suffici provid specimen requir pre treatment laboratori test sampl substanc account percentag calcul articl direct ec european parliament council decemb textil name present remov suitabl method affect fibr constitu purpos fibrou matter extract light petroleum water remov treat air dry test sampl soxhlet extractor light petroleum hour minimum rate cycl hour light petroleum evapor thesampl extract direct treatment consist soak specimen water room temperatur hour soak water hour agit liquor time time liquor specimen ratio remov excess water sampl squeez suction centrifug sampl air dry fibrou matter extract light petroleum water remov substitut water method suitabl method substanti alter fibr constitu unbleach natur veget fibr jute coir note normal pre treatment light petroleum water remov natur fibrou substanc addit pre treatment appli sampl finish insolubl light petroleum water analysi report includ full detail method pre treatment test procedur gener instruct dry conduct dry oper hour hour ventil oven oven door close dry period hour specimen weigh check mass constant mass consid constant dry period minut variat avoid handl crucibl weigh bottl specimen residu bare hand dry cool weigh oper dry specimen weigh bottl cover dry stopper weigh bottl remov oven transfer quickli desicc dry filter crucibl weigh bottl cover oven dry close weigh bottl transfer quickli desicc apparatu filter crucibl dry oper oven conduct enabl dry mass fibr determin loss cool conduct cool oper desicc balanc complet cool weigh bottl attain case hour weigh cool complet weigh weigh bottl minut remov desicc weigh accuraci procedur pre treat laboratori test sampl test specimen weigh cut yarn cloth length mm dissect dry specimen weigh bottl cool desicc weigh transfer specimen glass vessel section relev commun method reweigh weigh bottl immedi obtain dry mass specimen differ complet test section applic method examin residu microscop check treatment fact complet remov solubl fibr calcul express result express mass insolubl compon percentag total mass fibr mixtur percentag solubl compon obtain differ calcul result basi clean dry mass adjust agre allow correct factor account loss matter pre treatment analysi calcul made appli formula calcul percentag insolubl compon clean dry mass basi disregard loss fibr mass pre treatment gt num gt gt den gt percentag clean dry insolubl compon dry mass specimen pre treatment dry mass residu correct factor loss mass insolubl compon reagent analysi suitabl valu section method valu normal valu applic chemic undegrad fibr calcul percentag insolubl compon clean dry mass basi adjust convent factor correct factor loss mass pre treatment gt num gt gt den gt gt den gt gt num gt gt den gt gt num gt gt den gt percentag insolubl compon adjust agre allow loss mass pre treatment percentag clean dry insolubl compon calcul formula shown agre allow insolubl compon annex ii direct textil name agre allow solubl compon annex ii direct textil name percentag loss insolubl compon caus pre treatment percentag loss solubl compon caus pre treatment percentag compon equal special pre treatment valu determin submit pure fibr constitu pre treatment appli analysi pure fibr free fibrou materi natur manufactur process state unbleach bleach found materi analys clean separ constitu fibr manufactur materi analys averag valu obtain test perform clean fibr similar mixtur examin normal pre treatment extract light petroleum water appli correct factor gener case unbleach cotton unbleach flax unbleach hemp loss due pre treatment convention case polypropylen case fibr loss due pre treatment convention disregard calcul ii method quantit analysi manual separ ii field applic method applic textil fibr type provid form intim mixtur separ hand ii principl identif constitu textil fibrou materi remov suitabl pre treatment fibr separ hand dri weigh order calcul proport fibr mixtur ii apparatu ii weigh bottl apparatu give ident result ii desicc indic silica gel ii ventil oven dry specimen ii analyt balanc accur ii soxhlet extractor apparatu give ident result ii needl ii twist tester similar apparatu ii reagent ii light petroleum redistil boil rang ii distil deioniz water ii condit test atmospher ii laboratori test sampl ii pre treatment laboratori test sampl ii procedur ii analysi yarn select pre treatment laboratori test sampl specimen mass fine yarn analysi made minimum length mass cut yarn piec suitabl length separ fibr type mean needl twist tester fibr type obtain pre weigh weigh bottl dri constant mass obtain ii analysi cloth select pre treat laboratori test sampl selvedg specimen mass edg carefulli trim avoid frai run parallel weft warp yarn case knit fabric line wale cours separ fibr type collect pre weigh weigh bottl proce ii ii calcul express result express mass fibr constitu percentag total mass fibr mixtur calcul result basi clean dry mass adjust agre allow correct factor account loss matter pre treatment ii calcul percentag mass clean dry fibr disregard loss fibr mass pre treatment gt num gt gt den gt gt num gt gt den gt gt num gt gt den gt percentag clean dry compon clean dry mass compon clean dry mass compon ii calcul percentag compon adjust agre allow correct factor loss matter pre treatment iii precis method precis individu method relat reproduc reproduc refer reliabl close agreement experiment valu obtain oper laboratori time method obtain individu result specimen ident consist mixtur reproduc express confid limit result confid level meant differ result seri analys made laboratori normal correct applic method ident consist mixtur exceed case iii test report iii state analysi conduct accord method iii give detail special pre treatment iii give individu result arithmet accuraci gt tabl gt method acet fibr aceton method field applic method applic remov fibrou matter binari mixtur acet wool anim hair silk cotton flax true hemp jute abaca alfa coir broom rami sisal cupro modal protein viscos acryl polyamid nylon polyest circumst method applic acet fibr deacetyl surfac principl acet dissolv dry mass mixtur aceton residu collect wash dri weigh mass correct express percentag dry mass mixtur percentag dry acet found differ apparatu reagent addit gener instruct apparatu glass stopper conic flask ml capac reagent aceton test procedur follow procedur gener instruct proce specimen contain glass stopper conic flask ml capac add ml aceton gram specimen shake flask stand minut room temperatur stir time time decant liquid weigh filter crucibl repeat treatment make extract period minut total time treatment aceton hour transfer residu filter crucibl wash residu filter crucibl aceton drain suction refil crucibl aceton drain graviti final drain crucibl suction dry crucibl residu cool weigh calcul express result calcul result gener instruct precis homogen mixtur textil materi confid limit result obtain method greater confid level method protein fibr fibr method hypochlorit field applic method applic remov fibrou matter binari mixtur protein fibr wool anim hair silk protein cotton cupro viscos acryl chlorofibr polyamid nylon polyest polypropylen elastan glass fibr protein fibr present method total amount individu quantiti principl protein fibr dissolv dry mass mixtur hypochlorit solut residu collect wash dri weigh mass correct express percentag dry mass mixtur percentag dry protein fibr found differ lithium hypochlorit sodium hypochlorit prepar hypochlorit solut lithium hypochlorit recommend case involv small number analys analys conduct fairli lengthi interv percentag hypochlorit solid lithium hypochlorit unlik sodium hypochlorit virtual constant percentag hypochlorit hypochlorit content check iodometr analysi constant weigh portion lithium hypochlorit emploi apparatu reagent gener instruct apparatu erlenmey flask ground glass stopper ml ii thermostat adjust reagent hypochlorit reagent lithium hypochlorit solut consist freshli prepar solut activ chlorin approxim previous dissolv sodium hydroxid ad prepar dissolv gram lithium hypochlorit activ chlorin gram activ chlorin approxim ml distil water add gram sodium hydroxid dissolv approxim ml distil water make litr distil water solut freshli prepar check iodometr sodium hypochlorit solut consist freshli prepar solut activ chlorin approxim previous dissolv sodium hydroxid ad check activ chlorin content solut iodometr analysi ii acet acid dilut solut dilut ml glacial acet acid litr water test procedur follow procedur gener instruct proce mix approxim gram sampl approxim ml hypochlorit solut lithium sodium hypochlorit ml flask agit order wet sampl heat flask minut thermostat agit continu regular interv dissolut wool proce exotherm reaction heat method distribut remov consider error caus incipi dissolut solubl fibr minut filter flask content weigh glass filter crucibl transfer residu fibr filter crucibl rins flask hypochlorit reagent drain crucibl suction wash residu success water dilut acet acid final water drain crucibl suction addit appli suction wash liquor drain graviti final drain crucibl suction dry crucibl residu cool weigh calcul express result calcul result gener instruct cotton viscos modal unbleach cotton precis homogen mixtur textil materi confid limit result obtain method greater confid level method viscos cupro type modal cotton method formic acid zinc chlorid field applic method applic remov fibrou matter binari mixtur viscos cupro includ type modal fibr cotton modal fibr found present preliminari test carri solubl reagent method applic mixtur cotton suffer extens chemic degrad viscos cupro render incomplet solubl presenc dye finish remov complet principl viscos cupro modal fibr dissolv dry mass mixtur reagent consist formic acid zinc chlorid residu collect wash dri weigh correct mass express percentag dry mass mixtur percentag dry viscos cupro modal fibr found differ apparatu reagent gener instruct apparatu glass stopper conic flask ml capac ii apparatu maintain flask reagent solut fuse anhydr zinc chlorid anhydr formic acid made water part mass fuse anhydr zinc chlorid part mass formic acid nb attent drawn respect point lai reagent chemic pure addit essenti fuse anhydr zinc chlorid ii ammonium hydroxid solut dilut ml concentr ammonia solut specif graviti ml litr water test procedur follow procedur gener instruct proce place specimen immedi flask pre heat add ml solut formic acid zinc chlorid pre heat gram specimen insert stopper shake flask vigor flask content constant temperatur hour half shake flask hourli interv filter content flask weigh filter crucibl reagent transfer crucibl fibr remain flask rins ml reagent wash crucibl residu water rins fibrou residu approxim ml cold ammonia solut ii ensur residu remain wholli immers solut minut rins cold water appli suction wash liquor drain graviti final drain remain liquid suction dry crucibl residu cool weigh calcul express result calcul result gener instruct cotton precis homogen mixtur textil materi confid limit result obtain method greater confid level method polyamid nylon fibr method formic acid field applic method applic remov fibrou matter binari mixtur polyamid nylon wool anim hair cotton cupro modal viscos acryl chlorofibr polyest polypropylen glass fibr mention method applic mixtur wool wool content exce method appli dissolv wool solut alkalin sodium hypochlorit principl polyamid fibr dissolv dry mass mixtur formic acid residu collect wash dri weigh mass correct express percentag dry mass mixtur percentag dry polyamid nylon found differ apparatu reagent gener instruct apparatu glass stopper conic flask ml capac reagent formic acid rel densiti dilut ml formic acid rel densiti litr water altern dilut ml formic acid rel densiti litr water concentr critic rang formic acid ii ammonia dilut solut dilut ml concentr ammonia solut rel densiti litr water test procedur follow procedur gener instruct proce specimen contain conic flask ml capac add ml formic acid gram specimen insert stopper shake flask wet specimen stand flask minut room temperatur shake interv filter content flask weigh filter crucibl transfer residu fibr crucibl wash flask formic acid reagent drain crucibl suction wash residu filter success formic acid reagent hot water dilut ammonia solut final cold water drain crucibl suction addit appli suction wash liquor drain graviti final drain crucibl suction dry crucibl residu cool weigh calcul express result calcul result gener instruct precis homogen mixtur textil materi confid limit result obtain method greater confid level method acet triacet method benzyl alcohol field applic method applic remov fibrou matter binari mixtur acet triacet principl acet fibr dissolv dry mass mixtur benzyl alcohol residu collect wash dri weigh mass express percentag dry mass mixtur percentag dry acet found differ apparatu reagent gener instruct apparatu glass stopper conic flask ml capac ii mechan shaker iii thermostat apparatu keep flask temperatur reagent benzyl alcohol ii ethanol test procedur follow procedur gener instruct proce specimen contain conic flask add ml benzyl alcohol gram specimen insert stopper secur flask shaker immers water bath shake minut temperatur mechan shaker flask shaken vigor hand decant liquid weigh filter crucibl add dose benzyl alcohol flask shake minut decant liquid crucibl repeat cycl oper time final pour liquid residu crucibl wash remain fibr flask crucibl extra quantiti benzyl alcohol drain crucibl transfer fibr flask rins ethanol shake manual decant filter crucibl repeat rins oper time transfer residu crucibl drain dry crucibl residu cool weigh calcul express result calcul result gener instruct precis homogen mixtur textil materi confid limit result obtain method greater confid level method triacet fibr method dichloromethan field applic method applic remov fibrou matter binari mixtur triacet wool anim hair silk cotton cupro modal viscos acryl polyamid nylon polyest glass fibr note triacet fibr receiv finish lead partial hydrolysi ceas complet solubl reagent case method applic principl triacet fibr dissolv dry mass mixtur dichloromethan residu collect wash dri weigh mass correct express percentag dry mass mixtur percentag dry triacet found differ apparatu reagent gener instruct apparatu glass stopper conic flask ml capac reagent dichloromethan test procedur follow procedur gener instruct proce specimen contain ml glass stopper conic flask add ml dichloromethan gram specimen insert stopper shake flask minut wet specimen stand minut room temperatur shake flask regular interv decant liquid weigh filter crucibl add ml dichloromethan flask residu shake manual filter content flask filter crucibl transfer residu fibr crucibl wash flask dichloromethan drain crucibl suction remov excess liquid refil crucibl dichloromethan drain graviti final appli suction elimin excess liquid treat residu boil water elimin solvent appli suction dry crucibl residu cool weigh calcul express result calcul result gener instruct case polyest precis homogen mixtur textil materi confid limit result obtain method greater confid level method cellulos fibr polyest method sulphur acid field applic method applic remov fibrou matter binari mixtur cotton flax true hemp rami cupro modal viscos polyest principl cellulos fibr dissolv dry mass mixtur sulphur acid residu collect wash dri weigh mass express percentag dry mass mixtur proport dry cellulos fibr found differ apparatu reagent gener instruct apparatu glass stopper conic flask ml capac ii thermostat apparatu maintain flask reagent sulphur acid prepar ad carefulli cool ml sulphur acid rel densiti ml distil water solut cool room temperatur dilut litr water ii ammonia dilut solut dilut ml ammonia solut rel densiti litr water test procedur follow procedur gener instruct proce specimen contain glass stopper conic flask ml capac add ml sulphur acid gram specimen insert stopper carefulli shake flask wet specimen maintain flask hour shake regular interv roughli minut filter content flask weigh filter crucibl mean suction transfer residu fibr wash flask sulphur acid drain crucibl suction wash residu filter fill crucibl fresh portion sulphur acid appli suction acid drain graviti wash residu success time cold water dilut ammonia solut cold water drain crucibl suction addit appli suction wash liquor drain graviti final drain remain liquid crucibl suction dry crucibl residu cool weigh calcul express result calcul result gener instruct precis homogen mixtur textil materi confid limit result obtain method greater confid level method acryl modacryl chlorofibr fibr method dimethylformamid field applic method applic remov fibrou matter binari mixtur acryl modacryl chlorofibr wool anim hair silk cotton cupro modal viscos polyamid nylon polyest equal applic acryl modacryl treat pre metal dye dy afterchrom dye principl acryl modacryl chlorofibr dissolv dry mass mixtur dimethylformamid heat water bath boil point residu collect wash dri weigh mass correct express percentag dry mass mixtur percentag dry acryl modacryl chlorofibr found differ apparatu reagent gener instruct apparatu glass stopper conic flask ml capac ii water bath boil point reagent dimethylformamid boil point water reagent toxic hood recommend test procedur follow procedur gener instruct proce specimen contain glass stopper conic flask ml capac add gram specimen ml dimethylformamid pre heat water bath boil point insert stopper shake flask wet specimen heat water bath boil point hour shake flask content gentli hand time period decant liquid weigh filter crucibl retain fibr flask add ml dimethylformamid flask heat minut shake flask content gentli hand period filter content flask filter crucibl mean suction transfer residu fibr crucibl wash beaker dimethylformamid drain crucibl suction wash residu litr hot water fill crucibl time addit water appli suction briefli water drain graviti wash liquor drain crucibl slowli slight suction appli final dry crucibl residu cool weigh calcul express result calcul result gener instruct case gt tabl gt precis homogen mixtur textil materi confid limit result obtain method greater confid level method chlorofibr fibr method mixtur carbon disulphid aceton field applic method applic remov fibrou matter binari mixtur chlorofibr polyvinyl chlorid fibr chlorin wool anim hair silk cotton cupro modal viscos acryl polyamid nylon polyest glass fibr wool silk content mixtur exce method polyamid nylon content mixtur exce method principl chlorofibr dissolv dry mass mixtur azeotrop mixtur carbon disulphid aceton residu collect wash dri weigh mass correct express percentag dry mass mixtur percentag dry polyvinyl chlorid fibr found differ apparatu reagent gener instruct apparatu glass stopper conic flask ml capac ii mechan shaker reagent azeotrop mixtur carbon disulphid aceton volum carbon disulphid aceton reagent toxic hood recommend ii ethanol volum methanol test procedur follow procedur gener instruct proce specimen contain glass stopper conic flask ml capac add ml azeotrop mixtur gram specimen seal flask secur shake flask mechan shaker vigor hand minut room temperatur decant supernat liquid weigh filter crucibl repeat treatment ml fresh reagent continu cycl oper polym deposit left watch glass drop extract liquid evapor transfer residu filter crucibl reagent appli suction remov liquid rins crucibl residu ml alcohol time water wash liquor drain graviti drain suction dry crucibl residu cool weigh note mixtur high chlorofibr content substanti shrinkag specimen dry procedur result dissolut chlorofibr solvent retard affect ultim dissolut chlorofibr solvent calcul express result calcul result gener instruct precis homogen mixtur textil materi confid limit result obtain method greater confid level method acet chlorofibr method glacial acet acid field applic method applic remov fibrou matter binari mixtur acet chlorofibr polyvinyl chlorid fibr chlorin principl acet fibr dissolv dry mass mixtur glacial acet acid residu collect wash dri weigh mass correct express percentag dry mass mixtur percentag dry acet found differ apparatu reagent gener instruct apparatu glass stopper conic flask ml capac ii mechan shaker reagent glacial acet acid reagent handl care highli caustic test procedur follow procedur gener instruct proce specimen contain glass stopper conic flask ml capac add ml glacial acet acid gram specimen seal flask secur shake mechan shaker vigor hand minut room temperatur decant supernat liquid weigh filter crucibl repeat treatment ml fresh reagent time make extract transfer residu filter crucibl drain suction remov liquid rins crucibl residu ml glacial acet acid time water rins liquid drain graviti appli suction dry crucibl residu cool weigh calcul express result calcul result gener instruct precis homogen mixtur textil materi confid limit result obtain method greater confid level method silk wool hair method sulphur acid field applic method applic remov fibrou matter binari mixtur silk wool anim hair principl silk fibr dissolv dry mass mixtur sulphur acid residu collect wash dri weigh mass correct express percentag dry mass mixtur percentag dry silk found differ apparatu reagent gener instruct apparatu glass stopper conic flask ml capac reagent sulphur acid prepar ad carefulli cool ml sulphur acid densiti ml distil water cool room temperatur dilut solut litr water ii sulphur acid dilut solut add ml sulphur acid densiti slowli ml distil water iii ammonia dilut solut dilut ml concentr ammonia densiti ml water test procedur follow procedur gener instruct proce specimen contain glass stopper conic flask ml capac add ml sulphur acid gram specimen insert stopper shake vigor stand minut room temperatur shake stand minut shake time filter content flask weigh filter crucibl wash remain fibr flask sulphur acid reagent wash residu crucibl success ml dilut sulphur acid reagent ml water ml dilut ammonia solut time fibr remain contact liquid minut appli suction final rins water leav fibr contact water minut drain crucibl suction dry crucibl residu cool weigh calcul express result calcul result gener instruct wool precis homogen mixtur textil materi confid limit result obtain method greater confid level method jute anim fibr method determin nitrogen content field applic method applic remov fibrou matter binari mixtur jute anim fibr anim fibr compon consist sole hair wool mixtur method applic textil mixtur fibrou matter dye finish nitrogen base principl nitrogen content mixtur determin assum nitrogen content compon proport compon calcul apparatu reagent gener instruct apparatu kjeldahl digest flask ml capac ii kjeldahl distil apparatu steam inject iii titrat apparatu allow precis ml reagent toluen ii methanol iii sulphur acid rel densiti iv potassium sulphat selenium dioxid vi sodium hydroxid solut litr dissolv sodium hydroxid ml water dilut litr water vii mix indic dissolv methyl red ml ethanol ml water mix bromocresol green dissolv ml ethanol ml water viii boric acid solut dissolv boric acid litr water ix sulphur acid standard volumetr solut pre treatment test sampl pre treatment substitut pre treatment gener instruct extract air dry sampl soxhlet apparatu mixtur volum toluen volum methanol hour minimum rate cycl hour solvent evapor sampl air remov trace oven extract sampl water ml sampl boil reflux minut filter return sampl flask repeat extract ident volum water filter remov excess water sampl squeez suction centrifug sampl air dry note toxic effect toluen methanol born mind full precaut test procedur gener instruct follow procedur gener instruct select dry weigh specimen detail procedur transfer specimen kjeldahl digest flask specimen weigh contain digest flask add order potassium sulphat selenium dioxid ml sulphur acid rel densiti heat flask gentli fibr destroi heat vigor solut clear colourless heat minut flask cool dilut content carefulli ml water cool transfer content quantit ml graduat flask make volum water form digest solut place ml boric acid solut ml conic flask place flask condens kjeldahl distil apparatu deliveri tube dip surfac boric acid solut transfer ml digest solut distil flask add ml sodium hydroxid solut funnel lift stopper slightli sodium hydroxid solut run slowli flask digest solut sodium hydroxid solut remain separ layer mix gentl agit heat distil flask gentli pass steam gener collect ml distil lower conic flask tip deliveri tube condens mm surfac liquid distil minut rins tip deliveri tube water catch wash conic flask remov conic flask replac conic flask roughli ml boric acid solut collect ml distil titrat distil separ sulphur acid mix indic record total titr distil titr distil ml repeat test start distil fresh aliquot digest solut carri blank determin digest distil reagent calcul express result calcul percentag nitrogen content dry specimen gt num gt gt den gt percentag nitrogen clean dry specimen total volum ml standard sulphur acid determin total volum ml standard sulphur acid blank determin normal standard sulphur acid dry mass specimen valu nitrogen content jute nitrogen content anim fibr percentag express dry mass fibr calcul composit mixtur pa gt num gt gt den gt pa percentag anim fibr clean dry specimen precis homogen mixtur textil materi confid limit result obtain method greater confid level method polypropylen fibr fibr xylen method field applic method applic remov fibrou matter binari mixtur polypropylen fibr wool anim hair silk cotton acet cupro modal triacet viscos acryl polyamid nylon polyest glass fibr principl polypropylen fibr dissolv dry mass mixtur boil xylen residu collect wash dri weigh mass correct express percentag dry mass mixtur percentag polypropylen found differ apparatu reagent gener instruct apparatu glass stopper conic flask ml capac ii reflux condens suitabl liquid high boil point fit conic flask reagent xylen distil note reagent highli flammabl toxic vapour suitabl precaut test procedur follow procedur gener instruct proce specimen contain conic flask add ml xylen gram specimen attach condens ii bring content boil maintain boil point minut immedi decant hot liquid weigh filter crucibl note repeat treatment time fresh ml portion solvent wash residu remain flask success ml boil xylen ml light petroleum gener instruct wash light petroleum filter content flask crucibl transfer residu fibr crucibl aid small quantiti light petroleum solvent evapor dry crucibl residu cool weigh note filter crucibl xylen decant pre heat treatment boil xylen ensur flask residu cool suffici light petroleum introduc order reduc fire toxic hazard oper hot extract apparatu procedur give ident result calcul express result calcul result gener instruct precis homogen mixtur textil materi confid limit result obtain method greater confid level method chlorofibr homopolym vinyl chlorid fibr concentr sulphur acid method field applic method applic remov fibrou matter binari mixtur chlorofibr base homopolym vinyl chlorid chlorin cotton acet cupro modal triacet viscos acryl modacryl polyamid nylon polyest modacryl concern give limpid solut immers concentr sulphur acid rel densiti method place method no principl constitu chlorofibr fibr mention point paragraph dissolv dry mass mixtur concentr sulphur acid rel densiti residu consist chlorofibr collect wash dri weigh mass correct express percentag dry mass mixtur percentag constitu obtain differ apparatu reagent gener instruct apparatu glass stopper conic flask ml capac ii glass rod flatten end reagent sulphur acid concentr rel densiti ii sulphur acid approxim aqueou solut prepar ad carefulli cool ml sulphur acid rel densiti ml distil de ioniz water cool room temperatur dilut solut litr water iii ammonia dilut solut dilut ml concentr ammonia solut rel densiti litr distil water test procedur follow procedur gener instruct proce specimen contain flask add ml sulphur acid gram specimen content flask remain room temperatur minut time stir test specimen occasion mean glass rod woven knit fabric treat wedg wall flask glass rod exert light pressur order separ materi dissolv sulphur acid decant liquid weigh filter crucibl add flask fresh portion ml sulphur acid repeat oper transfer content flask filter crucibl transfer fibrou residu aid glass rod add concentr sulphur acid flask order remov fibr adher wall drain filter crucibl suction remov filtrat empti chang filter flask wash residu crucibl success sulphur acid solut ii distil de ioniz water gener instruct ammonia solut iii final wash distil de ioniz water drain crucibl suction addit appli suction wash oper liquid drain graviti dry crucibl residu cool weigh calcul express result calcul result gener instruct precis homogen mixtur textil materi confid limit result obtain method greater confid level method chlorofibr modacryl elastan acet triacet fibr method cyclohexanon field applic method applic remov fibrou matter binari mixtur acet triacet chlorofibr modacryl elastan wool anim hair silk cotton cupro modal viscos polyamid nylon acryl glass fibno principl acet triacet fibr chlorofibr modacryl elastan dissolv dry mass cyclohexanon temperatur close boil point residu collect wash dri weigh mass correct express percentag dry mass mixtur percentag chlorofibr modacryl elastan acet triacet found differ apparatu reagent gener instruct apparatu hot extract apparatu suitabl test procedur section figur variant apparatu melliand textilbericht ii filter crucibl specimen iii porou baffl poros grade iv reflux condens adapt distil flask heat devic reagent cyclohexanon boil point ii ethyl alcohol volum nb cyclohexanon flammabl toxic suitabl precaut test procedur follow procedur gener instruct proce pour distil flask ml cyclohexanon gram materi insert extract contain filter crucibl specimen porou baffl slightli inclin previous insert reflux condens bring boil continu extract minut minimum rate cycl hour extract cool remov extract contain filter crucibl remov porou baffl wash content filter crucibl time ethyl alcohol heat subsequ litr water appli suction wash oper liquid drain graviti appli suction final dry crucibl residu cool weigh calcul express result calcul result gener instruct except gt tabl gt precis homogen mixtur textil fibr confid limit result obtain method greater confid level figur refer point method gt refer film gt method except base determin content constitu substanc compon annex ensur fibrou residu immers ammonia solut minut filter crucibl adaptor fit tap flow ammonia solut regul solubl modacryl chlorofibr reagent check carri analysi carri analysi solubl polyvinyl chlorid fibr reagent check wild silk tussah silk complet solubl sulphur acid reagent nitrogen free apparatu melliand textilbericht pp annex iii part repeal direct refer articl council direct eec oj success amend commiss direct eec oj council direct eec oj commiss direct eec oj part time limit transposit gt tabl gt annex iv correl tabl gt tabl gt