Designation:F2251−13StandardTestMethodforThicknessMeasurementofFlexiblePackagingMaterial1ThisstandardisissuedunderthefixeddesignationF2251;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthemeasurementofthicknessofflexiblepackagingmaterialsusingcontactmicrometers.1.2ThePrecisionandBiasstatementforthistestmethodwasdevelopedusingbothhandheldandbenchtopmicrometerswithfootsizesrangingfrom4.8to15.9mm(3⁄16to5⁄8in.).1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D374TestMethodsforThicknessofSolidElectricalInsu-lation(Withdrawn2013)3D5947TestMethodsforPhysicalDimensionsofSolidPlasticsSpecimensD6988GuideforDeterminationofThicknessofPlasticFilmTestSpecimensE171PracticeforConditioningandTestingFlexibleBarrierPackagingE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod2.2ANSI/ASQStandards:4ANSI/ASQCZ1.4SamplingProceduresandTablesforIn-spectionbyAttributesANSI/ASQCZ1.9SamplingProceduresandTablesforIn-spectionbyVariables3.Terminology3.1Definitions:3.1.1benchmicrometer—tabletopmeasurementsystemus-ingadeadweightorspring.3.1.2foot—themovingcomponentofthemicrometerthatcomesincontactwiththesample.4.SignificanceandUse4.1Thistestmethodprovidesameansformeasuringathicknessdimension.Accuratemeasurementofthicknesscanbecritica...
