Designation:E130–08StandardPracticeforDesignationofShapesandSizesofGraphiteElectrodes1ThisstandardisissuedunderthefixeddesignationE130;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversanumberofspecificgraphiteelectrodeshapesandsizesthatareusefulinspectrochemicalanalysis.1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.2.ReferencedDocuments2.1ASTMStandards:2E135TerminologyRelatingtoAnalyticalChemistryforMetals,Ores,andRelatedMaterials3.Terminology3.1Fordefinitionsoftermsusedinthispractice,refertoTerminologyE135.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1preform—adescriptivewordappliedtoacommer-ciallyproducedspectroscopicelectrodewhichispurifiedaftermachining.4.SummaryofPractice4.1Thepracticeclassifieselectrodesbyapplicationandprovidesdimensionalspecifications.5.SignificanceandUse5.1Thispracticeisintendedasareferenceforspectro-chemicalmethodsthatutilizegraphiteelectrodes.Methodsshouldemployandreferenceoneoftheelectrodeshapesinthispractice,butifthisisnotpossible,themethodshouldincludeelectrodespecificationsforthespecificshapeused.5.2ThispracticeshouldbereferredtoinamethodbyincludingastatementsuchasthefollowinginthesectiononReagentsandMaterials:GraphiteElectrodes—Theelectrode(s)shallbeofhigh-puritygraphiteandconformtotype(s)(insertdesignationfromthismethod)asdepictedinPracticeE130.6.Classes6.1Sevenclassesofgraphiteelectrodesaredesignatedasfollows:6.1.1ClassC—CounterElectrodes,foruseoppositethespecimenoroppositetheelectrodethatcontainsthespecimen.6.1.2ClassS—SpecimenElectrodes,forusewithliquidorparticulatespecimens.Thin-wallcupsallowfasterburnoffofgraphiteandfasterconsumptionofthespecimen.Undercutcupsprovidegreaterheatingofthespecimen.6.1.3ClassP—SpecimenElectrod...
