Designation:D4279−95(Reapproved2009)StandardTestMethodsforWaterVaporTransmissionofShippingContainers—ConstantandCycleMethods1ThisstandardisissuedunderthefixeddesignationD4279;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscoverthedeterminationofwatervaportransmissionratesforbulkshippingcontainers,asfollows:1.1.1MethodA,forReclosableContainers,and1.1.2MethodB,forContainersNotDesignedforReclos-ing.1.2Withineachproceduredetailsaregivenfortheconstantandcyclemethodsoftestatmosphere.1.3Thetestmaybeappliedtothecontaineraspacked,orafteroneormoreperformancetestssuchasdrum(MethodD782),vibration(MethodsD999),drop(TestMethodD5276),impactresistance(TestMethodsD880,D4003,andD5277),orperformancetests(PracticeD4169),asrequired.1.4Forsmallshippingcontainersrequiringgreateraccuracyinweighing,thewatervaportransmissionmaybedeterminedinaccordancewithTestMethodD895orTestMethodD1251.1.5Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D782TestMethodforShippingContainersinRevolvingHexagonalDrum(Withdrawn1999)3D880TestMethodforImpactTestingforShippingContain-ersandSystemsD895TestMethodforWaterVaporPermeabilityofPack-ages(Withdrawn1999)3D996TerminologyofPackagingandDistributionEnviron-mentsD999TestMethodsforVibrationTestingofShippingCon-tainersD1251TestMethodforWaterVaporPermeabilityofPack-agesbyCycleMethod(Withdrawn1999)3D4003TestMethodsforProgrammab...
