Designation:D2574−16(Reapproved2020)´1StandardTestMethodforResistanceofEmulsionPaintsintheContainertoAttackbyMicroorganisms1ThisstandardisissuedunderthefixeddesignationD2574;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—Editorialchangesweremadeinsubsections5.16,6.3,and7.3.2inAugust2020.1.Scope1.1Thistestmethodcoversthedeterminationoftherelativeresistanceofemulsionpaintstoattackinthecontainerbymicroorganisms.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D5588TestMethodforDeterminationoftheMicrobialConditionofPaint,PaintRawMaterials,andPlantAreas3.SummaryofTestMethod3.1Thistestmethodisdesignedtochallengesamplesofoneormorepaintscontainingvariouslevelsofoneormorebiocideswithaknownamountofbacteriaandratetheabilityofthetestpaint(s)tocontrolthe“contamination.”4.SignificanceandUse4.1Spoilageofpaintinthecontainercanresultinputrefaction,loweredpH,gasformation,anddecreaseinviscosity.Thistestmethodprovidesastandardprocedurefortheevaluationoftheresistanceofemulsionpaintstomicrobialdeterioration.Theresultsshouldenable:(1)thepaintmanu-facturertoselectaneffectivepreservativeand(2)thesupplierofpreservativestoevaluatetheperformancein...
