Designation:D6278−20aStandardTestMethodforShearStabilityofPolymerContainingFluidsUsingaEuropeanDieselInjectorApparatus1ThisstandardisissuedunderthefixeddesignationD6278;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoverstheevaluationoftheshearstabilityofpolymer-containingfluids.Thetestmethodmea-suresthepercentviscositylossat100°Cofpolymer-containingfluidswhenevaluatedbyadieselinjectorapparatusprocedurethatusesEuropeandieselinjectortestequipment.Theviscositylossreflectspolymerdegradationduetoshearatthenozzle.NOTE1—TestMethodD2603hasbeenusedforsimilarevaluationofshearstability;limitationsareasindicatedinthesignificancestatement.Nodetailedattempthasbeenundertakentocorrelatetheresultsofthistestmethodwiththoseofthesonicsheartestmethod.NOTE2—ThistestmethodusestestapparatusasdefinedinCECL-14-A-93.ThistestmethoddiffersfromCEC-L-14-A-93intheperiodoftimerequiredforcalibration.NOTE3—TestMethodD5275alsoshearsoilsinadieselinjectorapparatusbutmaygivedifferentresults.NOTE4—ThistestmethodhasdifferentcalibrationandoperationalrequirementsthanwithdrawnTestMethodD3945.NOTE5—TestMethodD7109isasimilarprocedurethatmeasuresshearstabilityatboth30and90injectioncycles.Thistestmethoduses30injectioncyclesonly.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.2.1Exception—Non-SIunitsareprovidedinparentheses.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection8.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPr...
