Designation:E2120−10StandardPracticeforPerformanceEvaluationofthePortableX-RayFluorescenceSpectrometerfortheMeasurementofLeadinPaintFilms1ThisstandardisissuedunderthefixeddesignationE2120;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThispracticecoversportableX-rayfluorescence(XRF)instrumentsintendedforthemeasurementofleadinpaint.Itisintendedthatmanufacturersapplythispracticetooneunitofaparticularmodelofaninstrumentwhenthatmodelisinitiallyavailable.Replicatetestsonadditionalunitsofthesamemodelofaninstrumentaretobeperformedatthediscretionofthemanufacturer.ThispracticealsoisintendedforusebythirdpartiesperformingindependentevaluationofportableX-rayfluorescenceinstruments.1.2AllperformanceevaluationdataaretobeinSIunits.1.3Testsofperformancearebasedonreplicatemeasure-mentsofcertifiedreferencepaintfilmsonavarietyofsubstratematerials.Testsareperformedtodetermine:bias,precision,linearity,limitofdetection,interferences,substrateaffects,andstability.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D3332TestMethodsforMechanical-ShockFragilityofProducts,UsingShockMachinesE344TerminologyRelatingtoThermometryandHydrom-etryE456TerminologyRelatingtoQualityandStatisticsE1605TerminologyRelatingtoLeadinBuildings2.2ANSIStandards:3ANSIN538–1979ClassificationofIndustrialIonizingRa-diationGaugingDevicesANSIN323–1978RadiationProtectionInstrumentationTestandCalibration2.3ISOStandards:3ISO2919RadiationProtection–SealedRadioactiveSources–GeneralRequirementsandClassification2.4ULStandards:4UL544SafetyforMedicalandDentalEquipmentUL3101–1Chem...
