Designation:D6116−00(Reapproved2010)StandardTestMethodforBlocking1ThisstandardisissuedunderthefixeddesignationD6116;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationoftheresis-tanceofleathertoblockingunderspecificconditionsoftemperature,humidity,andpressure.Thistestmethoddoesnotapplytowetblue.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.Apparatus2.1ForcedCirculatingHotAirOven,capableofmaintain-ing8063°C.2.2AmericanMedicalMuseumJar(withLid),havinginnerdimensionsof16cmhigh,10cmlong,and8cmwide.Thereshallbethreeindentationsatthetopofeach8cmside.2.3PetriDish,100by15mm,withcover.2.4Weight,2000g.3.TestSpecimen3.1Testonerectangular2.5by10cmspecimenpersample.4.Procedure4.1Thespecimenshallbeperforated2mmfromoneendandhungonastandardsizepaperclipthathasbeenopenedtoitsfulllength.Nomorethanfivespecimensshallbehungononeclip.Theclipholdingthespecimenshallbesetintotheindentationsofthejar.Nomorethanthreeclipsshallbeplacedinajar.Thejarshallbefilledwithtapwaterat2362°Ctoalevelnohigherthan1.25cmfromthebottomofthehangingspecimen.Thelidshallthenbeplacedonthejarandthespecimenallowedtoconditionfor4h.4.2Afterconditioning,thespecimenshallberemovedfromthejarandimmediatelyfoldedgraintograintoforma2.5by5cmrectangle.Thefoldedspecimenshallthenbeplacedinaninverted(rimup)petridishcover.Thebottomplateofthedishshallthenbeplacedconcentricallywithintheinvertedcoverplatesoastocoverthes...
