Designation:D6943−15(Reapproved2019)StandardPracticeforImmersionTestingofIndustrialProtectiveCoatingsandLinings1ThisstandardisissuedunderthefixeddesignationD6943;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticeestablishesproceduresfortheevaluationoftheresistanceofindustrialprotectivecoatingstoimmersioninchemicals.1.2Liningsareaparticulartypeofcoatingintendedforprotectionofsubstratesfromcorrosionasaresultofcontinu-ousorintermittentfluidimmersion.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesisareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2C267TestMethodsforChemicalResistanceofMortars,Grouts,andMonolithicSurfacingsandPolymerConcretesD16TerminologyforPaint,RelatedCoatings,Materials,andApplicationsD471TestMethodforRubberProperty—EffectofLiquidsD523TestMethodforSpecularGlossD610PracticeforEvaluatingDegreeofRustingonPaintedSteelSurfacesD714TestMethodforEvaluatingDegreeofBlisteringofPaintsD785TestMethodforRockwellHardnessofPlasticsandElectricalInsulatingMaterialsD1474TestMethodsforIndentationHardnessofOrganicCoatingsD1734PracticeforMakingCementitiousPanelsforTestingCoatingsD2200PracticeforUseofPictorialSurfacePreparationStandardsandGuidesforPaintingSteelSurfaces...