Designation:F502−08(Reapproved2019)StandardTestMethodforEffectsofCleaningandChemicalMaintenanceMaterialsonPaintedAircraftSurfaces1ThisstandardisissuedunderthefixeddesignationF502;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversdeterminationoftheeffectsofcleaningsolutionsandliquidcleanerconcentratesonpaintedaircraftsurfaces(Note1).Streaking,discoloration,andblister-ingmaybedeterminedvisually.Softeningisdeterminedwithaseriesofspeciallypreparedpencilswhereindeterminationofthesoftestpenciltorupturethepaintfilmismade.NOTE1—Thistestmethodisapplicabletoanypaintfilmthatisexposedtocleaningmaterials.MIL-PRF-85285hasbeenselectedasabasicexample.Whenotherpaintfinishesareused,refertotheapplicablematerialspecificationforpanelpreparationandsystemcuringpriortotesting.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D329SpecificationforAcetoneD1193SpecificationforReagentWater2.2MilitaryStandards:3MIL-PRF-85285Coating:Polyurethane,AircraftandSup-portEquipmentA-A-58054Abras...
