Designation:E1234−12StandardPracticeforHandling,Transporting,andInstallingNonvolatileResidue(NVR)SamplePlatesUsedinEnvironmentallyControlledAreasforSpacecraft1ThisstandardisissuedunderthefixeddesignationE1234;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversthehandling,transporting,andinstallingofsampleplatesusedforthegravimetricdetermina-tionofnonvolatileresidue(NVR)withinandbetweenfacili-ties.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E1235TestMethodforGravimetricDeterminationofNon-volatileResidue(NVR)inEnvironmentallyControlledAreasforSpacecraft2.2ISOStandards:14644-1,CleanroomsandAssociatedControlledEnvironments—Part1:ClassificationofAirCleanliness314644-2,CleanroomsandAssociatedControlledEnvironments—Part2:SpecificationsforTestingandMonitoringtoProveContinuedCompliancewithISO14644-132.3U.S.FederalStandard:FED-STD-209EAirborneParticulateCleanlinessClassesinCleanroomsandCleanZones42.4InstituteofEnvironmentalSciencesandTechnology:IEST-RP-CC001.3,HEPAandULPAFilters3IEST-RP-CC007.1,TestingULPAFilters3IEST-RP-CC034.1,HEPAandULPAFilterLeakTests3IEST-STD-CC1246,ProductCleanlinessLevelsandCon-taminationControlProgram32.5AmericanNationalStandardsInstitute:ANSI/ASMEB46.1-2009,SurfaceTexture(SurfaceRoughness,Waviness,andLay)53.Terminology3.1Definitions:3.1.1ISOClassN(airborneparticulatecleanlinessclass),n—levelofairborneparticulateconcentrationsasdefinedinISO14644-1and14644-2,where10Nisthemaximumallowableconcentrations(particlespercubicmetre).3.1...
