ASTMD3705920759530O534825352AMERICANSOCIETYFORTESTINGANDMATERIALS1916RaceStPhiladelphia,Pa19103ReprintedfromtheAnnualBookofASTMStandards.CopyrightASTMIfnotlistedinthecurrentcombinedindex,willappearinthenextedition.(#ThDesignation:D1705-92AnAmericanNationalStandardStandardTestMethodforParticleSizeAnalysisofPowderedPolymersandCopolymersofVinylChloride'ThisstandardisissuedunderthefixeddesignationD1705:thenumberimmediatelyidlowingthcdcsigiiationindicatestheyearoïoriginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthcscsindicatesihcycaroflastreapprova1.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.ScopeI.1Thistestmethodprovidesawet-sievetechniqueapplicabletotheparticlesizeanalysisofpowderedpolymersandcopolymersofvinylchloridehavingparticlesizeslargerthan45pm(No.325sieve).1.2Thewetsievetechniqueassureseliminationofstaticcharges,whichcauseresinparticleagglomeration.Awettingagentpromotescompletedisplacementofairinporousresins.Adjustmentsinsamplesizearerecommendedtopreventmalfunctioningofsieveswithfinerresins.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafelyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafelyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.NOTEI-Thisstandardissimilarincontent,butnottechnicallyequivalenttoIS01624-1978.2.ReferencedDocuments2.IASTMStandards:D883TerminologyRelatingtoPlastics2D1600TerminologyforAbbreviatedTermsRelatingtoE11SpecificationforWire-ClothSievesforTesting2.2IS0Standard:IS01624-1978Plastics-VinylChlorideHomopolymerPlastics2Purposes3andCopolymerResin-SieveAnalysisinWatef'3.Terminology3.1General-Defin.itionsareinaccordancewithTermi-nologyD883andabbreviationswithTerminologyD1600,unlessotherwiseindicated.4.SignificanceandUse4.1Thistestmethodcanbeusedtodetermineparticlesizedistributionandthereforeisusefulfordetermininglot-to-lotunifor...
