Designation:D7789−12(Reapproved2021)StandardPracticeforCollectionofFungalMaterialfromSurfacesbySwab1ThisstandardisissuedunderthefixeddesignationD7789;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thepurposeofthispracticeistodescribetheproce-duresforcollectionofsurfacesamplesusingsterileswabs.1.2Thepurposeofthispracticeistosupportthefieldinvestigatorindifferentiatingfungalmaterialsfromnon-fungalmaterialsuchasscuffs,sootdeposits,stains,pigments,dust,efflorescence,adhesives,dust,andwaterstains.1.3Thispracticedoesnotaddressbuildingoccupantexposures,oroccupanthealthrisks.1.4Thesamplescollectedbythispracticeareappropriateforculture,directmicroscopy,andbiochemicalanalysis,orcombinationthereof.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1356TerminologyRelatingtoSamplingandAnalysisofAtmospheresD6044GuideforRepresentativeSamplingforManagementofWasteandContaminatedMedia3.Terminology3.1Definitions:3.1.1sample,n—aportionofapopulationintendedtoberepresentativeofthewhole.aportionofapopulation.Aportionofmaterialthatistakenfortestingorrecordpurposes.D60443.1.2sampling,n—aprocessconsistingofthewithdrawalorisolationofafractionalpartofthewhole.D13563.2DefinitionsofTermsSpecifictoThisStandard:3.2.1area(surface,sampled),n—adefined,measu...
