Designation:E1831–96StandardGuideforPreparingCertificatesforReferenceMaterialsRelatingtoChemicalCompositionofMetals,Ores,andRelatedMaterials1ThisstandardisissuedunderthefixeddesignationE1831;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidedescribestheminimuminformationthatshouldbeincludedorreferencedinacertificateforareferencematerialrelatingtothechemicalcompositionsofmetals,ores,andrelatedmaterials.Theorderofheadingsandthewordingmaybechangedtosuitthereferencematerialsortheirintendedapplications.Itshouldnotbeusedtodisallowtheuseofreferencematerialsproducedpriortothepublicationofthisguide.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ISODocuments:ISOGuide31—ContentsofCertificatesofReferenceMa-terials2ISO3207,StatisticalInterpretationofData—DeterminationofStatisticalToleranceInterval23.SignificanceandUse3.1Thisguidedescribestheessentialcontentsofacertifi-catepreparedtoaccompanyareferencematerialtobeusedforthestandardizationorcontrolofananalyticaltestmethod,orboth,orthecalibrationofaninstrumentusedincarryingoutanalyticaltestingofmetals,ores,andrelatedmaterials.Itisintendedforusebysuppliersorcertifiedreferencematerialsforthemetalsindustry.3.2ThisguideisbasedoncriteriadescribedinISOGuide31.4.CertificateHeadings4.1Theorderofheadingsandtheirwordingmaybechangedtosuitthereferencematerialsortheirintendedapplication.4.1.1NameandAddressoftheCertifyingOrganization—Printthenameandaddressofthebodyororganizationthatacceptsresponsibilityfortheinformationonthecertificate.4.1.2TitleoftheDocument—Useadistincttitle,suchas“CertifiedReferenc...
