Designation:F1927−14StandardTestMethodforDeterminationofOxygenGasTransmissionRate,PermeabilityandPermeanceatControlledRelativeHumidityThroughBarrierMaterialsUsingaCoulometricDetector1ThisstandardisissuedunderthefixeddesignationF1927;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversaprocedurefordeterminationoftherateoftransmissionofoxygengas,atsteady-state,atagiventemperatureand%RHlevel,throughfilm,sheeting,laminates,co-extrusions,orplastic-coatedpapersorfabrics.Thistestmethodextendsthecommonpracticedealingwithzerohumidityor,atbest,anassumedhumidity.Humidityplaysanimportantroleintheoxygengastransmissionrate(O2GTR)ofmanymaterials.Thistestmethodprovidesforthedetermi-nationofoxygengastransmissionrate(O2GTR),theper-meanceofthefilmtooxygengas(PO2),thepermeationcoefficientofthefilmtoitsthickness(P”O2),andoxygenpermeabilitycoefficient(PʹO2)inthecaseofhomogeneousmaterialsatgiventemperatureand%RHlevel(s).1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Specificprecau-tionarystatementsaregiveninSection9.2.ReferencedDocuments2.1ASTMStandards:2D1898PracticeforSamplingofPlastics(Withdrawn1998)3D3985TestMethodforOxygenGasTransmissionRateThroughPlasticFilmandSheetingUsingaCoulometricSensorE104PracticeforMaintainingConstantRelativeHumiditybyMeansofAqueousSolutionsE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod3.Terminology3.1Definitions:3.1.1oxygenpermeabilitycoeffıcient(PʹO2)—theproductofthepermeanceandthethicknessofthefilm.Thepermeabilityismeaningfulonlyforho...
