Designation:D1669/D1669M−07(Reapproved2019)StandardPracticeforPreparationofTestPanelsforAcceleratedandOutdoorWeatheringofBituminousCoatings1ThisstandardisissuedunderthefixeddesignationD1669/D1669M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversaprocedureforthepreparationofacceleratedandoutdoorweatheringtestpanelsofbituminouscoatings.Itisconsideredsuitableforthepreparationoffilmthicknessesintherangefrom0.25to2.54mm[0.010to0.100in.].1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.(Warning—MercuryhasbeendesignatedbyEPAandmanystateagenciesasahazardousmaterialthatcancausecentralnervoussystem,kidney,andliverdamage.Mercury,oritsvapor,maybehazardoustohealthandcorrosivetomaterials.Cautionshouldbetakenwhenhandlingmercuryandmercury-containingproducts.SeetheapplicableproductMaterialSafetyDataSheet(MSDS)fordetailsandEPA’swebsite,http://www.epa.gov/mercury/faq.htm,foradditionalinforma-tion.Usersshouldbeawarethatsellingmercuryormercury-containingproducts,orboth,inyourstatemaybeprohibitedbystatelaw.)1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committ...
