Designation:E2286−08aStandardGuideforExaminationofDrySealImpressions1ThisstandardisissuedunderthefixeddesignationE2286;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguideprovidesproceduresthatshouldbeusedbyforensicdocumentexaminers(GuideE444)forexaminationsandcomparisonsinvolvingdrysealdevicesandtheirimpres-sions.1.2Theseproceduresareapplicablewhethertheexamina-tion(s)andcomparison(s)isofquestionedandknownitemsorofexclusivelyquestioneditems.1.3Theseproceduresincludeevaluationofthesufficiencyofthematerialavailableforexamination.1.4Theparticularmethodsemployedinagivencasewilldependuponthenatureandsufficiencyofthematerialavail-ableforexamination.1.5Thisguidemaynotcoverallaspectsofparticularlyunusualoruncommonexaminations.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatoryrequirementspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E444GuideforScopeofWorkofForensicDocumentExaminersE1658TerminologyforExpressingConclusionsofForensicDocumentExaminersE1732TerminologyRelatingtoForensicScienceE2195TerminologyRelatingtotheExaminationofQues-tionedDocuments3.Terminology3.1Definitions—Fordefinitionsoftermsinthisguide,refertoTerminologyE1658,TerminologyE1732,andTerminologyE2195.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1dryseal,n—anon-inkedmechanicaldevicewhichembossesadesignonpaper.3.2.2embossmentvariation,n—non-uniformityofthedrysealimpressiononthepaperstock.Itcanbecausedbythemannerofapplicationorbydefectsinthedryseal.3.2.3impression,n—animageformedbypressure.4.SignificanceandUse4.1Theproceduresoutlinedherearegroundedinthegenerallyacceptedbodyofknowledgeandexperienceinthefieldo...
