Designation:E1673−96(Reapproved2012)StandardTestMethodforPercentSuspensibility1ThisstandardisissuedunderthefixeddesignationE1673;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodisusedtodeterminethepercentsuspensibilityofdrypesticideformulations.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.ForspecificprecautionarystatementsseeSection7.2.ReferencedDocuments2.1ASTMStandards:2D1126TestMethodforHardnessinWaterD1193SpecificationforReagentWater3.SummaryofTestMethod3.1Aknownquantityofdrypesticideisslurriedinto50mLoftestwaterina100-mLbeaker.Theslurryisquantitativelytransferredtoa250-mLmixingcylinderusingadditionaltestwatertorinsethebeaker.The250-mLmixingcylinderisthenfilledtovolumewithtestwater.Themixingcylinderisstopperedandinverted15completecycles.Themixingcylin-derisallowedtostandfor30min.After30minthetop225mLisdrawnoffandtheremainingsuspensionisdried.Theresidueweightwilldeterminethepercentsuspensibility.4.SignificanceandUse4.1Thistestmethodisdesignedspecificallyfordryformulations,butneednotberestrictedtothesematerials.4.2Eitheroptionofthistestmethod(seeSection8)maybeusedtodeterminethepercentsuspensibility.4.3Thistestmethodmaynotbeapplicabletoalldryformulationssuchasthosecontainingeitherliquidsoringre-dientsthatrisetothetopuponseparation.4.4Thistestmethodmaynotbeapplicabletoformulationscontainingingredientsthatdecomposeunderthetestcondi-tions.4.5Thistestmethodmaynotgivereproducibleresultsifflocculationoccurs.4.6Thistestmethodshouldberuninduplic...
