Designation:D3896−07(Reapproved2016)StandardPracticeforRubberFromSyntheticSources—Sampling1ThisstandardisissuedunderthefixeddesignationD3896;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispractice,intendedforrefereepurposes,coversauniformprocedureforsamplinglotsofsolidsyntheticrubbers.Rawsyntheticrubbergenerallyismarketedinbalesorpack-agesofvarioussizes.1.2Aprocedurefordeterminingtheacceptabilityoflotsofsyntheticrubberisgiven.Thisprocedureisbasedonavariablessamplingplan.1.3Thesamplesizeisbasedontheassumptionofavisuallyhomogeneousmaterial.Ifobviousheterogeneityexists,thenumberofsamplesshallbeincreased.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ANSIStandard:Z1.9SamplingProceduresandTablesforInspectionbyVariablesforPercentDefective23.SignificanceandUse3.1Thesamplingplanisintendedforrefereepurposesonlyinestablishingthepropertiesorqualityofalotorshipmentofsyntheticrubber.4.Sampling4.1NumberofSamples—ThenumberofsamplestobeselectedtorepresentthelotshallbedeterminedbythesizeofthelotasindicatedinTable1.Asamplebaleorpackageisselectedrandomlyfromthelotforeachsamplerequired.NOTE1—Thesamplingplanismoreefficientforlargelots.Theriskfortheproducerandconsumerdecreasesasthesamplesizeincreases.4.2RemovalofTestPortions:4.2.1Bales—Fromeachsamplebaleselected,cutone600to1500-gtestportionofrubber,dependingontheteststobemade.Eachtestportionistestedseparately.Cutthetestportionthroughtheentirebale,normaltothebalesurfacesofthelargestareawithoutt...
