Designation:D5495−03(Reapproved2016)StandardPracticeforSamplingWithaCompositeLiquidWasteSampler(COLIWASA)1ThisstandardisissuedunderthefixeddesignationD5495;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticedescribestheprocedureforsamplingliquidswiththecompositeliquidwastesampler,or“COLI-WASA.”TheCOLIWASAisanappropriatedeviceforobtain-ingarepresentativesamplefromstratifiedorunstratifiedliquids.Itsmostcommonuseisforsamplingcontainerizedliquids,suchastanks,barrels,anddrums.Itmayalsobeusedforpoolsandotheropenbodiesofstagnantliquid.NOTE1—AlimitationoftheCOLIWASAisthatthestoppermechanismmaynotallowcollectionofapproximatelythebottominchofmaterial,dependingonconstructionofthestopper.1.2TheCOLIWASAshouldnotbeusedtosampleflowingormovingliquids.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D4687GuideforGeneralPlanningofWasteSamplingD5088PracticeforDecontaminationofFieldEquipmentUsedatWasteSitesD5283PracticeforGenerationofEnvironmentalDataRe-latedtoWasteManagementActivities:QualityAssuranceandQualityControlPlanningandImplementationD5743PracticeforSamplingSingleorMultilayeredLiquids,WithorWithoutSolids,inDrumsorSimilarContainersD6232GuideforSelectionofSamplingEquipmentforWasteandContaminatedMediaDataCollectionActivities3.SummaryofPractice3.1Acleandeviceisslowlyloweredintotheliquidtobesampled.Afterithasfilled,thebottomofthesamplingtubeisclosedandthedeviceisretrieved.Thecontentsaresubse-quentlydischargedintoasampleco...
