Designation:D2968−22StandardTestMethodforMedandKempFibersinWoolandOtherAnimalFibersbyMicroprojection1ThisstandardisissuedunderthefixeddesignationD2968;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationbymicropro-jectionofthepercentageofmedullatedfibers(medandkempfibers)inwoolorotheranimalfiberssuchasmohair,cashmere,alpaca,orcamel’shairintheirvariousforms.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.3Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D123TerminologyRelatingtoTextilesD2130TestMethodforDiameterofWoolandOtherAnimalFibersbyMicroprojection(Withdrawn2022)3D4845TerminologyRelatingtoWool3.Terminology3.1ForallterminologyrelatedtoD13.13,WoolandFelt,seeTerminologyD4845.3.1.1Thefollowingtermsarerelevanttothisstandard:kempfiber;medfiber;medulla,inmammalianhairfibers;medullatedfiber;wool.3.2FordefinitionsofallothertextiletermsseeTerminologyD123.4.SummaryofTestMethod4.1Themagnifiedimagesofaspecimenoftheanimalfibersareexamined.Allmedullatedfibersaremeasuredandclassedaseithermedfibersorkempfibers.Theobservednumbersofmedandkempfibersareexpressedaspercentagesofthetotalnumberoffiberimagesexamined.5.SignificanceandUse5.1TestMethodD2968forthedeterminationofmedandkempfibersbymicroprojectionmaybeusedfortheacceptancetestingofcommercialshipmentsofw...
