Designation:D8041/D8041M−16StandardTestMethodforWholeBootBreathability(MVTR)1ThisstandardisissuedunderthefixeddesignationD8041/D8041M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThewholebootbreathabilitytestmethodisdesignedtoindicatetheMoistureVaporTransmissionRate(MVTR)throughthebootupperbymeansofadifferenceintemperatureandmoisturevaporconcentrationbetweentheinteriorofthebootandtheexteriorenvironment.Thismethodisintendedforasize10RU.S.(Regularwidth)bootthatisatleast6in.[15.2cm]tallabovetheinsole1.2Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemistobeusedindependentlyoftheother,withoutcombiningvaluesinanyway.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.Terminology2.1Definitions:2.1.1boot,n—footwearinwhichtheupperreachesabovetheankle.2.1.2eyelet,n—textile,metalorplasticreinforcementsaroundtheholeswhichcarrythelace.2.1.3footformassembly,n—relatingtothistestmethod,thefootformconsistsofbootplugwithcoppertubinginashapeofafoot.2.1.4footwear,n—wearingapparelforfeet(suchasshoes,boots,slippers).2.1.5gusset,n—thepartofthevampthatextendsovertheinstepofthefootbetweentheeyestaysandallowsexpansionsoftheopeningatthetopofthefootwear.2.1.5.1Discussion—Forslip-onfootwearthismayincludeanelasticgussetthatallowsexpansionattheopeningatthetopofthefootwear.2.1.6heel,n—thepartofthebootwhichsupportsthebackpartofthefoot.2.1.7insert,n—removablefootb...
