Designation:D5771−17Designation:IP444⁄09StandardTestMethodforCloudPointofPetroleumProductsandLiquidFuels(OpticalDetectionSteppedCoolingMethod)1ThisstandardisissuedunderthefixeddesignationD5771;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONThistestmethoddescribesanalternativeprocedureforthedeterminationofcloudpointofpetroleumproductsTestMethodD2500/IP219usinganautomaticapparatus.ThetemperatureresultsfromthistestmethodhavebeenfoundtobeequivalenttoTestMethodD2500/IP219.WhenspecificationrequiresTestMethodD2500/IP219,donotsubstitutethistestmethodoranyothermethodwithoutobtainingcomparativedataandagreementfromthespecifier.1.Scope*1.1Thistestmethodcoversthedescriptionofthedetermi-nationofthecloudpointofpetroleumproductsandbiodieselfuelsthataretransparentinlayers40mminthickness,byanautomaticinstrumentusinganopticaldevice.1.2Thistestmethodcoverstherangeoftemperaturesfrom−60°Cto+49°Cwithtemperatureresolutionof0.1°C,however,therangeoftemperaturesincludedinthe1997interlaboratorycooperativetestprogramonlycoveredthetemperaturerangeof–56°Cto+34°C.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D2500TestMethodforCloudPointofPetroleumProductsa...
