Designation:D4042−93(Reapproved2019)StandardTestMethodforSamplingandTestingforAshandTotalIroninSteelMillDispersionsofRollingOils1ThisstandardisissuedunderthefixeddesignationD4042;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribesaprocedureforsamplingandtestingdispersionsofrollingoilsinwaterfromoperatingsteelrollingmillsfordeterminationofashandtotalironcontent.Itspurposeistoprovideatestmethodsuchthatarepresentativesamplemaybetakenandphenomenonsuchasironseparation,fat-emulsionseparation,andsoforth,donotcontributetoanalyticalerrorindeterminationofashandtotaliron.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Forspecificwarningstatements,seeSections6and7.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D482TestMethodforAshfromPetroleumProductsD1068TestMethodsforIroninWaterD1193SpecificationforReagentWaterD2795TestMethodsforAnalysisofCoalandCokeAsh(Withdrawn2001)3E50PracticesforApparatus,Reagents,andSafetyConsid-erationsforChemicalAnalysisofMetals,Ores,andRelatedMaterialsE832SpecificationforLaboratoryFilterPapers3.SummaryofTestMethod3.1Polyethylenedisposablesamplebagsinasuitablehold-ingdeviceareusedtocollectrepresentativesamplesofnonhomogeneousdispersio...
