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LICENCEforLicensee:Date:Conditionsofuse:ClickhereforfullconditionsofLicenceWEBLINKSCheckifthisdocumentiscurrentFindsimilardocumentsStandardsWatch(infoandlogin)VisitourwebsiteInternationalStandardson-lineat:2005Australian/NewZealandStandard™TestingofproductsforuseincontactwithdrinkingwaterAS/NZS4020:2005LicensedtoReecePtyLtdon02Dec2005.1userpersonaluserlicenceonly.Storage,distributionoruseonnetworkprohibited.AS/NZS4020:2005ThisJointAustralian/NewZealandStandardwaspreparedbyJointTechnicalCommitteeCH-034,MaterialsinContactwithDrinkingWater.ItwasapprovedonbehalfoftheCouncilofStandardsAustraliaon20October2005andonbehalfoftheCouncilofStandardsNewZealandon4November2005.ThisStandardwaspublishedon29November2005.ThefollowingarerepresentedonCommitteeCH-034:AUSTRAPAustralianChamberofCommerceandIndustryAustralianElectricalandElectronicManufacturersAssociationAustralianIndustryGroupAustralianPaintManufacturers’FederationAustralianSocietyforMicrobiologyIncorporatedCertificationBodies(Australia)CopperDevelopmentCentreofAustraliaHealthDepartmentofWesternAustraliaMinistryofHealth,NewZealandNationalHealthandMedicalResearchCouncilPlasticsNewZealandPlasticsIndustryPipeAssociationofAustraliaRubberManufacturersAssociationofAustralasiaTheRoyalAustralianChemicalInstituteWaterServicesAssociationofAustraliaKeepingStandardsup-to-dateStandardsarelivingdocumentswhichreflectprogressinscience,technologyandsystems.Tomaintaintheircurrency,allStandardsareperiodicallyreviewed,andneweditionsarepublished.Betweeneditions,amendmentsmaybeissued.Standardsmayalsobewithdrawn.ItisimportantthatreadersassurethemselvestheyareusingacurrentStandard,whichshouldincludeanyamendmentswhichmayhavebeenpublishedsincetheStandardwaspurchased.DetailedinformationaboutjointAustralian/NewZealandStandardscanbefoundbyvisitingtheStandardsWebShopat:2005Australian/NewZealandStandard™TestingofproductsforuseincontactwithdrinkingwaterOriginatedasAS3855(Int)—1991.PreviouseditionAS/NZS4020:2002.Fifthedition2005.COPYRIGHT©StandardsAustralia/StandardsNewZealandAllrightsarereserved.Nopartofthisworkmaybereproducedorcopiedinanyformorbyanymeans,electronicormechanical,includingphotocopying,withoutthewrittenpermissionofthepublisher.JointlypublishedbyStandardsAustralia,GPOBox476,Sydney,NSW2001andStandardsNewZealand,PrivateBag2439,Wellington6020ISBN0733769934LicensedtoReecePtyLtdon02Dec2005.1userpersonaluserlicenceonly.Storage,distributionoruseonnetworkprohibited.AS/NZS4020:20052PREFACEThisStandardwaspreparedbytheJointStandardsAustralia/StandardsNewZealandCommitteeCH-034,MaterialsinContactwithDrinkingWater,tosupersedeAS/NZS4020:2002,Testingofproductsforuseincontactwithdrinkingwater.InpreparingthisStandard,considerationhasbeengiventocomparableoverseasStandards,tominimizeduplicationofeffortandtomaintaincommonality,whereverreasonable,withthoseStandards.ParticularconsiderationhasbeengiventothevariouspartsofBS6920,Suitabilityofnon-metallicproductsforuseincontactwithwaterintendedforhumanconsumptionwithregardtotheireffectonthequalityofthewater.SeveralofthetestproceduresandcriteriagiveninBS6920havebeenadoptedormodifiedforAustralianandNewZealandrequirements.ThisStandarddepartsfromBS6920asfollows:(a)ThisStandardprovidesamethodoftestingfortheleachingofcompoundsthatmayproduceamutageniceffect.(b)Therequirementforproductstobetestedatsurfacearea-to-volumeratiosthatarenotlessthanthoseintheintendedend-useexposure(withtheexceptionofthetestforgrowthofaquaticmicro-organisms).Wherethereisadifferencebetweentestandend-useexposures,provisionismadeforascalingfactortobeappliedtothetestresult.(c)Theinclusionoftestingformetalsextractedfrommetalproductsthatareoftencomponentsofproductsincontactwithdrinkingwater.Significantchangesfromthepreviouseditionincludethefollowing:(i)Inclusionofacolorimetricmethodfordeterminationofcytotoxicactivity.(ii)Inclusionofanappendixonthestructureoftestreports.(iii)Revisionoftheappendixonproductsubmissioninformation.(iv)Alteredrequirementsfortestingnon-metallicproductsforleachingofmetals.Theterms‘normative’and‘informative’havebeenusedinthisStandardtodefinetheapplicationoftheappend