Designation:B827−05(Reapproved2014)StandardPracticeforConductingMixedFlowingGas(MFG)EnvironmentalTests1ThisstandardisissuedunderthefixeddesignationB827;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticeprovidesproceduresforconductingenvi-ronmentaltestsinvolvingexposurestocontrolledquantitiesofcorrosivegasmixtures.1.2Thispracticeprovidesfortherequiredequipmentandmethodsforgas,temperature,andhumiditycontrolwhichenableteststobeconductedinareproduciblemanner.Repro-ducibilityismeasuredthroughtheuseofcontrolcouponswhosecorrosionfilmsareevaluatedbymassgain,coulometry,orbyvariouselectronandX-raybeamanalysistechniques.Reproducibilitycanalsobemeasuredbyinsitucorrosionratemonitorsusingelectricalresistanceormass/frequencychangemethods.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.ItistheresponsibilityoftheuserofthisstandardtobecomefamiliarwithallhazardsincludingthoseidentifiedintheappropriateMaterialSafetyDataSheet(MSDS)forthisproduct/materialasprovidedbythemanufacturer,toestablishappropriatesafetyandhealthpractices,anddeterminetheapplicabilityofregulatorylimitationspriortouse.See5.1.2.4.2.ReferencedDocuments2.1ASTMStandards:2B542TerminologyRelatingtoElectricalContactsandTheirUseB765GuideforSelectionofPorosityandGrossDefectTestsforElectrodepositsandRelatedMetallicCoatingsB808TestMethodforMonitoringofAtmosphericCorrosionChambersbyQuartzCrystalMicrobalancesB810TestMethodforCalibrationofAtmosphericCorrosionTestChambersbyChangeinMassofCopperCouponsB825TestMethodforCoulometricReductionofSurfaceFilmsonMetallicTestSamplesB826TestMethodforMonitoringAtmosphericCorrosionTestsbyElectricalResistanceProbesB845GuideforM...
