Designation:D445−21´2BritishStandard2000:Part71:Section1:1996StandardTestMethodforKinematicViscosityofTransparentandOpaqueLiquids(andCalculationofDynamicViscosity)1ThisstandardisissuedunderthefixeddesignationD445;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.ε1NOTE—EditoriallycorrectedtablesinSection17inDecember2021toalignwithresearchreports.ε2NOTE—EditoriallyremovedjointdesignationinOctober2022.1.Scope*1.1Thistestmethodspecifiesaprocedureforthedetermi-nationofthekinematicviscosity,ν,ofliquidpetroleumproducts,bothtransparentandopaque,bymeasuringthetimeforavolumeofliquidtoflowundergravitythroughacalibratedglasscapillaryviscometer.Thedynamicviscosity,η,canbeobtainedbymultiplyingthekinematicviscosity,ν,bythedensity,ρ,oftheliquid.NOTE1—Forthemeasurementofthekinematicviscosityandviscosityofbitumens,seealsoTestMethodsD2170andD2171.NOTE2—ISO3104correspondstoTestMethodD445–03.1.2Theresultobtainedfromthistestmethodisdependentuponthebehaviorofthesampleandisintendedforapplicationtoliquidsforwhichprimarilytheshearstressandshearratesareproportional(Newtonianflowbehavior).If,however,theviscosityvariessignificantlywiththerateofshear,differentresultsmaybeobtainedfromviscometersofdifferentcapillarydiameters.Theprocedureandprecisionvaluesforresidualfueloils,whichundersomeconditionsexhibitnon-Newtonianbehavior,havebeenincluded.1.3Therangeofkinematicviscositiescoveredbythistestmethodisfrom0.2mm2/sto300000mm2/s(seeTableA1.1)atalltemperatures(see6.3and6.4).Theprecisionhasonlybeendeterminedforthosematerials,kinematicviscosityrangesandtemperaturesasshowninthefootnotestotheprecisionsection.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.TheSIunitusedinthistestmethodforkinematicviscosityismm2/...
