BS 6748-1986 Specification for Limits of metal rel

BRITISHSTANDARDBS6748:1986SpecificationforLimitsofmetalreleasefromceramicware,glassware,glassceramicwareandvitreousenamelwareUDC[641.542+642.72]:[666.11+666.29+666.3/.7]:[615.9:546.3](seeforeword).©BSI03-1999ThefollowingBSIreferencesrelatetotheworkonthisstandard:CommitteereferenceFHM/29Draftforcomment85/40108DCISBN0580153401CommitteesresponsibleforthisBritishStandardThepreparationofthisBritishStandardwasentrustedbytheFurnitureandHouseholdEquipmentStandardsCommittee(FHM/-)toTechnicalCommitteeFHM/29,uponwhichthefollowingbodieswererepresented:AssociationofMetropolitanAuthoritiesAssociationofPublicAnalystsBritishCeramicGiftandTablewareManufacturersAssociationBritishCeramicManufacturersFederationBritishCeramicResearchLtd.BritishGlassIndustryResearchAssociationBritishVitrifiedHotelwareAssociationConsumerStandardsAdvisoryCommitteeofBSIDepartmentofHealthandSocialSecurityDepartmentofTradeandIndustry(ConsumerSafetyUnit,CSDivision)DepartmentofTradeandIndustry(LaboratoryoftheGovernmentChemist)GlassManufacturers’FederationInstituteofTradingStandardsAdministrationInstituteofVitreousEnamellersSocietyofGlassTechnologyStonewarePotters’AssociationVitreousEnamelDevelopmentCouncilAmendmentsissuedsincepublicationAmd.No.DateofissueComments©BSI03-1999iContentsPageCommitteesresponsibleInsidefrontcoverForewordii1Scope12Definitions13Classification14Leadandcadmiumrelease1AppendixAMethodfordeterminationofmetalrelease3PublicationsreferredtoInsidebackcover©BSI03-1999ForewordThisBritishStandardhasbeenpreparedunderthedirectionoftheFurnitureandHouseholdEquipmentStandardsCommitteeandisacombinedrevisionofBS4860,BS5103andBS5180.TheneedforrevisionofBS4860hasbeencreatedbythepublicationofEECDirective84/500/EECwhichtheUKisrequiredtoimplementandtheopportunityhasbeentakentoincorporatethecloselyrelatedrequirementsofBS5103andBS5180intotherevisiontoavoidproliferationofrequirementsandtestmethodsinthefieldofmetalreleasefromceramics,glass,glassceramicsandvitreousenamelsincontactwithfood.ThisstandardwillformthebasisofregulationstobemadeundertheConsumerSafetyAct1978,replacingtheGlazedCeramicWare(Safety)RegulationsSI1975No.1241.ItwillbecomeeffectiveonlywhentheseRegulationsarerevokedandreplacedbythenewRegulations;withdrawalofBS4860:1972willbeannouncedattheappropriatetime.Theremaderegulationswillbebaseduponthisstandardandwillbeconsistentwithit.ThisstandardspecifieslimitsformetalreleasefromvitreousenamelwarewhichdifferfromthoserequiredbytheVitrousEnamel-ware(Safety)RegulationsSI1976No.454inwhichBS5180:1974iscalledup.Intheinterestsofuniformityitisrecommendedthatthelimitsspecifiedinthisstandardbeadoptedforthosevitreousenamelproductsequivalentinformandusagetothecategoriesidentifiedinthestandard,althoughtheRegulationswillnotbecorrespondinglyamendedandBS5180:1974willnotthereforebewithdrawnonpublicationofthisstandard.However,noregulationsexist,orarecurrentlyenvisaged,forglassandglassceramicarticlesandtheadoptionofthelimitsspecifiedinthisstandardshouldbeconsideredasacontributiontothereductionofexposuretoleadandcadmiumintheenvironment.AccordinglyBS5103iswithdrawn.Thelimitsforleadandcadmiumreleasespecifiedinthisstandardarenotintendedtoberegardedasthemaximumamountsofthesemetalstowhichexposurecanbeconsideredsafe,theyarethelowestlevelsachievablebytheindustriesconcernedwiththeobjectofreducingoverallexposuretothesemetals.ABritishStandarddoesnotpurporttoincludeallthenecessaryprovisionsofacontract.UsersofBritishStandardsareresponsiblefortheircorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.Inparticular,relianceonthisstandardmaynotinallcasesmeettherequirementsoftheVitrousEnamel-wareRegulations.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,pagesiandii,pages1to4,aninsidebackcoverandabackcover.Thisstandardhasbeenupdated(seecopyrightdate)andmayhavehadamendmentsincorporated.Thiswillbeindicatedintheamendmenttableontheinsidefrontcover.©BSI03-199911ScopeThisBritishStandardspecifieslimitsforleadandcadmium,expressedasaconcentrationoftheelements,releasedfromceramic,glass,glassceramicandvitreousenamelarticlesintendedforuseincontactwithfoodstuffs,whenthearticleissubjectedtoaspecifiedmethodoftest.NOTEThetitlesofthepublicationsreferredtointhisstandardarelistedontheinsidebackcover.2DefinitionsForthepurposesofthisBritishStandardthefollowingdefinitionsapply.2.1ceramicwarearticlesmanufacturedfromamixtureofinorganicmaterialswithagenerallyhighargillaceousorsilicatecontenttowhichsmallquantitiesoforganicmaterialsmayhavebeenadded.Thesearticlesarefirstshapedandtheshapethusobtainedispermanentlyfixedbyfiring.Theymaybeglazed,enamelledand/ordecorated2.2glasswarearticlesmanufacturedfromsoda-lime-silica,borosilicateorleadcrystalglass,orfromg