Designation:E1520−99(Reapproved2015)StandardTestMethodforParticleCountsPerPoundofGranularCarriersandDry-AppliedGranularFormulations1ThisstandardisissuedunderthefixeddesignationE1520;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodisusedtodeterminethenumberofparticlesperpoundofgranularcarriersandgranularpesticideformulations.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecificprecautionarystatements,seeSection6.2.ReferencedDocuments2.1ASTMStandards:2E11SpecificationforWovenWireTestSieveClothandTestSievesE725TestMethodforSamplingGranularCarriersandGranularPesticidesE726TestMethodforParticleSizeDistributionofGranularCarriersandGranularPesticidesE727/E727MTestMethodsforDeterminingBulkDensityofGranularCarriersandGranularPesticides3.SummaryofTestMethod3.1AknownweightofthegranularcarrierorgranularpesticideformulationisplacedonthetopsieveofastackedsetofU.S.standardstainlesssteelscreens.Thesievesareshakenforaspecifiedperiodoftime.Theweightpercentofthegranulesretainedoneachsieveisdetermined.Thenumberofparticlesperpoundofgranularmaterialisthencalculated.4.SignificanceandUse4.1Thistestmethodwasdesignedprincipallyforclaygranularcarriersandclay-basedgranularformulations,butneednotbelimitedtothesematerials.4.2Thisprocedureisapplicabletogranulesintherangefrom8to60mesh(2.36to0.25mm).4.3Thesievesizesusedtocalculatetotalparticlecountwillbecalledthedesiredrangeandshouldbespecifiedaspartofthetestresults.5.Apparatus5.1MechanicalSieveShaker,aTylerRoTapsieve...
