Designation:D4193−08(Reapproved2020)´1StandardTestMethodforThiocyanateinWater1ThisstandardisissuedunderthefixeddesignationD4193;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—WarningnoteswereeditoriallyupdatedthroughoutinJanuary2020.1.Scope1.1Thistestmethodcoversthequantitativecolorimetriclaboratorymeasurementofdissolvedthiocyanateinwater,wastewater,andsalinewaterintherangefrom0.1to2.0mg/L.Forhigherconcentrations,useanaliquotfromthedilutedsample.1.1.1Validation—Thistestmethodwasvalidatedovertherangeof0.07to1.42mg/L.Thistestmethodwasvalidatedatninelaboratoriesatfourlevels.Thistestmethodmaybevalidforreportingresultsdowntolowerlevelsasvalidatedinindividualuserlaboratories.1.1.2Application—Thistestmethodhasbeenvalidatedinreagentwater,TypeII,inmultiplelaboratoriesand7naturalwaters,1laboratoryeffluent,1steelmilleffluent,and2dechlorinatedandtreatedsanitaryeffluentsinsinglelaborato-ries.Itistheuser’sresponsibilitytoassurethevalidityofthetestmethodonanyuntestedmatrices.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection9.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1129TerminologyRelatingtoWaterD1192GuideforEquipmentforSamplingWaterandS...
