ASTM D584-2010 原毛中羊毛含量的实验室测定的标准试验方法

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【英文标准名称】:StandardTestMethodforWoolContentofRawWool-LaboratoryScale
【原文标准名称】:原毛中羊毛含量的实验室测定的标准试验方法
【标准号】:ASTMD584-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D13.13
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:cleanwoolcontent;rawwool;yield;Cleanfibercontent;Extractablemattercontent--textilefabrics/fibers;Woolandwooltop;Woolandwooltop--raw;Woolcontent--rawwool
【摘要】:Thistestmethodisconsideredsatisfactoryforacceptancetestingofcommercialshipmentssincethistestmethodhasbeenusedextensivelyinthetradeforacceptancetesting.IncaseofdisputearisingfromdifferencesinreportedtestresultswhenusingTestMethodD584foracceptancetestingofcommercialshipments,thepurchaserandthesuppliershouldconductcomparativetestingtodetermineifthereisastatisticalbiasbetweentheirlaboratories.Competentstatisticalassistanceisrecommendedfortheinvestigationofbias.Asaminimum,thetwopartiesshouldtakeagroupoftestspecimensthatareashomogenousaspossibleandthatarefromalotofthetypematerialinquestion.Thetestspecimensshouldthenbeassignedinequalnumberstoeachlaboratoryfortesting.TheaverageresultsfromthetwolaboratoriesshouldbecomparedusingStudent''st-testforunpaireddataandanacceptableprobabilitylevelchosenbythetwopartiesbeforetestingisbegun.Ifabiasisfound,eitheritscausemustbefoundandcorrectedorthepurchaserandthesuppliermustagreetointerpretfuturetestresultsinthelightofknownbias.Thewool-basecontentofwoolinanyconditionorformisabasicquantity.Fromitmaybecalculatedcommercialmassesoryieldsinanyofthevariousrecognizeddefinedsystemsusedininternationalcommerce(Note1).TheproceduresfordeterminingthewoolbasecontentofgreasywoolprovidedinthistestmethodandinIWTOMethod19-85(E)areinessentialagreement.Note38212;Thisisnottrueforscouredwool,asIWTOMethod19-85(E)doesnotrequirerescouringofscouredwoolcontaininglessthan5%residualgrease.Notallofthewoolbasepresentinalotofrawwoolcanberecoveredinusefulformbycommercialcleaningoperations.Theamountofwoollossvaries,dependingonfactorssuchasthecharacterofthewool,thenatureandpercentageoftheimpuritiespresent,thecleaningprocessandequipmentused,andsoforth.NoASTMstandardspecifiesorrecommendsanyspecificprocedureorpracticeforestimatinganticipatedlossofwoolduringcommercialcleaning(orother)operations.Thefollowingstatutorypracticeisdescribedsolelyforinformation:ForthepurposeofdutyassessmentonimportationsofrawwoolintotheUnitedStates,theTariffSchedulesoftheUnitedStatesprovidesastatutoryformulaforcalculatingtheallowancetobemadeforwoolx201C;thatwouldordinarilybelostduringcommercialcleaningoperations.x201D;Theformulaisbasedonthecleanwoolfiberpresent(calledx201C;absolutecleancontentx201D;intheTariffSchedules)andonthevegetablematterpresent.Theallowance,intermsofcleanwoolfiberpresent,isequalto0.5%ofthecleanwoolfiberpresentplus60%ofthevegetablematterpresent,thetotalallowancenottoexceed15%ofthecleanwoolfiberpresent.Thedutiablequantity(calledx201C;cleanyieldx201D;intheTariffSchedules)isthedifferencebetweenthecleanwoolfiberpresentandtheallowancesocalculated.1.1Thistestmethodcoversalaboratoryprocedureforthedeterminationofthewoolbasecontentandthecleanwoolfiberpresentinsamplesofrawwool.Thistestmethodisalsoapplicabletootheranimalfiberssuchasmohair,cashmere,alpaca,andcamelhair.