Designation:E2042/E2042M−09StandardPracticeforCleaningandMaintainingControlledAreasandCleanRooms1ThisstandardisissuedunderthefixeddesignationE2042/E2042M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoverstheprocedurestobefollowedfortheinitialcleaningandnormalmaintenanceofcleanroomsandcontrolledareas.Thispracticeisapplicabletoaerospacecleanareaswherebothparticlesandmolecularfilms(NVR)mustbecontrolled.1.2Units—ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWaterE1234PracticeforHandling,Transporting,andInstallingNonvolatileResidue(NVR)SamplePlatesUsedinEnvi-ronmentallyControlledAreasforSpacecraftE1235TestMethodforGravimetricDeterminationofNon-volatileResidue(NVR)inEnvironmentallyControlledAreasforSpacecraftE1549SpecificationforESDControlledGarmentsRequiredinCleanroomsandControlledEnvironmentsforSpace-craftforNon-HazardousandHazardousOperationsE1560TestMethodforGravimetricDeterminationofNon-volatileResidueFromCleanroomWipersE2352PracticeforAerospaceCleanroomsandAssociatedControlledEnvironments—CleanroomOperationsF24TestMethodforMeasuringandCountingParticulateContaminationonSurfacesF25TestMethodforSizingandCountingAirborneParticu-lateContaminationinCleanroomsandOtherDust-ControlledAreasF50PracticeforContinuousSizingand...
