AMERICANSOCIETYFORTESTINGANDMATERIALSDesignation:D3660-901916RaceSI..Philadelphia.Pa19103RoprinlodtromlheAnnualBookofASTMSiandards.CopyrigntASTMIIno1listedinthecurrentcombinedIndex.willappearinthenexleditionStandardTestMethodforStapleLengthofMan-MadeFibers,AverageandDistribution(FiberArrayMethod)’ThisstandardisissuedunderthcfixeddesignationD3660;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthemeasurementoftheaver-agestaplelengthandlengthdistributionofman-madefibersusingafiberarraymethod.Itisapplicabletoanytextilefiberinrawstock,sliver,top,orrovingformhavinganominalcutlengthintherangefrom1to2.5in.(25to64mm).1.I.IWhenusedtomeasurelengthsoffiberatearlystagesofyarnprocessing(throughroving),themethodmaynotreflecttheoriginalstaplelengthprofiledueto.possibledamageduringprocessingandblending.NOTEI-ThismethodreplacestheCombMethodOptionAprevi-ouslypublishedasSections8through15ofTestMethodD540,MethodofTestingMan-MadeStapleFibers?Fordeterminationofaveragelengthandlengthdistributionofman-madefibersbysingle-fiberlengthmachine,refertoTestMethodD3661,TestMethodforStapleLengthofMan-MadeFibers,AverageandDistribution(Single-FiberLengthMachineMethod)?NOTE2-Formethodscoveringthedeterminationoftheaveragelengthandlengthdistributionofnaturalfibers,refertothefollowingmethods:forcotfon,D1440,TestMethodforLengthandLengthDis-tributionofCottonFibers(ArrayMethod)4andD1447,TestMethodforLengthandLengthUniformityofCottonFibersbyFibrographMea~urement:~forwool,D519,TestMethodforLengthofFiberinWoolToppD1234,MethodforSamplingandTestingStapleLengthofGreaseWool:andD1575,TestMethodforFiberLengthofWoolinScouredWoolandCardSliver?1.2Thisstandarddoesnotpurporttoaddressthesafityproblemsassociatedwithitsuse.Itistheresponsibilityoftheuserosthisstandardtoestablishappropria...
