Designation:D5006−11AnAmericanNationalStandardStandardTestMethodforMeasurementofFuelSystemIcingInhibitors(EtherType)inAviationFuels1ThisstandardisissuedunderthefixeddesignationD5006;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1ThistestmethodcoversatechniqueformeasuringtheconcentrationofDiethyleneGlycolMonomethylEther(Di-EGME)inaviationfuels.Ameasuredvolumeoffuel,extractedwithafixedratioofwater,istestedwithasuitablerefracto-metertodeterminetheconcentrationoffuelsystemicinginhibitor(FSII)infuel.Precisionestimateshavebeendeter-minedfortheDiEGMEadditiveusingspecificextractionratioswithawidevarietyoffueltypes.Theextractionratiosarehighenoughthatportablehandheldrefractometerscanbeused,butnotsohighastosacrificeaccuracyorlinearity,orboth,inthe0.01to0.25vol%rangeofinterest.1.2DiEGMEisfullydescribedinSpecificationD4171andinotherspecifications.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4WARNING—Mercuryhasbeendesignatedbymanyregulatoryagenciesasahazardousmaterialthatcancausecentralnervoussystem,kidneyandliverdamage.Mercury,oritsvapor,maybehazardoustohealthandcorrosivetomaterials.Cautionshouldbetakenwhenhandlingmercuryandmercurycontainingproducts.SeetheapplicableproductMa-terialSafetyDataSheet(MSDS)fordetailsandEPA’swebsite—http://www.epa.gov/mercury/faq.htm—foraddi-tionalinformation.Usersshouldbeawarethatsellingmercuryand/ormercurycontainingproductsintoyourstateorcountrymaybeprohibitedbylaw.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationsprior...