Designation:D2968−13StandardTestMethodforMedandKempFibersinWoolandOtherAnimalFibersbyMicroprojection1ThisstandardisissuedunderthefixeddesignationD2968;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationbymicropro-jectionofthepercentageofmedullatedfibers(medandkempfibers)inwoolorotheranimalfiberssuchasmohair,cashmere,alpaca,orcamel’shairintheirvariousforms.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D123TerminologyRelatingtoTextilesD2130TestMethodforDiameterofWoolandOtherAnimalFibersbyMicroprojectionD4845TerminologyRelatingtoWool3.Terminology3.1ForallterminologyrelatedtoD13.13,WoolandFelt,seeTerminologyD4845.3.1.1Thefollowingtermsarerelevanttothisstandard:kempfiber,medfiber,medulla,inmammalianhairfibers,medullatedfiber,wool.3.2FordefinitionsofallothertextiletermsseeTerminologyD123.4.SummaryofTestMethod4.1Themagnifiedimagesofaspecimenoftheanimalfibersareexamined.Allmedullatedfibersaremeasuredandclassedaseithermedfibersorkempfibers.Theobservednumbersofmedandkempfibersareexpressedaspercentagesofthetotalnumberoffiberimagesexamined.5.SignificanceandUse5.1TestMethodD2968forthedeterminationofmedandkempfibersbymicroprojectionmaybeusedfortheacceptancetestingofcommercialshipmentsofwoolandotheranimalfibers,butcautionisadvisedsinceonlyafewtypesofanimalfibershavebeensubjectedtointerlaboratoryteststoascertaintheprecisionoftestsformedandkempfibersbythistestmethod.Comparativetestsasdirectedin5.1.1maybeadvis-able.5.1.1IncaseofadisputearisingfromdifferencesinreportedtestresultswhenusingTestMethodD296...
