Designation:D7296−18StandardPracticeforCollectionofSettledDustSamplesUsingDryWipeSamplingMethodsforSubsequentDeterminationofBerylliumandCompounds1ThisstandardisissuedunderthefixeddesignationD7296;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversthecollectionofsettleddustcon-tainingberylliumandberylliumcompoundsonsurfacesusingthedrywipesamplingmethod,orboth.Thesesamplesarecollectedinamannerthatwillpermitsubsequentextractionanddeterminationofberylliumandcompoundsinthewipesusinglaboratoryanalysistechniquessuchasatomicspectrom-etryorfluorescencedetection.1.2Thispracticeislimitedinitsscopetoapplicationswherewettedwipesampling(usingPracticeD6966)orvacuumsampling(usingPracticeD7144)isnotphysicallyfeasible(forexample,ifthesurfacetobewipedwouldbecompromisedbyuseofwettedwipes).1.3Thispracticedoesnotaddressthesamplingdesigncriteria(thatis,samplingplanwhichincludesthenumberandlocationofsamples)thatareusedforclearance,hazardevaluation,riskassessment,andotherpurposes.Toprovideforvalidconclusions,sufficientnumbersofsamplesshouldbeobtainedasdirectedbyasamplingplan.AdditionalguidanceisprovidedinGuideD7659.1.4Thispracticecontainsnotesthatareexplanatoryandarenotpartofthemandatoryrequirementsofthispractice.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.7Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,Guide...
