BS EN ISO 6143 2025.docx

BSENISO6143:2025GasanalysisComparisonmethodsfordeterminingandcheckingthecompositionofcalibrationgasmixturesbsi.NationalforewordThisBritishStandardistheUKimplementationofENISO6143:2025.ItisidenticaltoISO6143:2025.ItsupersedesBSENISO6143:2006,whichiswithdrawn.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteePTI15,NaturalGasandGasAnalysis.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitscommitteemanager.ContractualandlegalconsiderationsThispublicationhasbeenpreparedingoodfaith,howevernorepresentation,warranty,assuranceorundertaking(expressorimplied)isorwillbemade,andnoresponsibilityorliabilityisorwillbeacceptedbyBSIinrelationtotheadequacy,accuracy,completenessorreasonablenessofthispublication.Allandanysuchresponsibilityandliabilityisexpresslydisclaimedtothefullextentpermittedbythelaw.Thispublicationisprovidedasis,andistobeusedattherecipientsownrisk.Therecipientisadvisedtoconsiderseekingprofessionalguidancewithrespecttoitsuseofthispublication.Thispublicationisnotintendedtoconstituteacontract.Usersareresponsibleforitscorrectapplication.©TheBritishStandardsInstitution2025PublishedbyBSIStandardsLimited2025ISBN9780539244649ICS71.040.40CompliancewithaBritishStandardcannotconferimmunityfromlegalobligations.ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon30June2025.Amendments/corrigendaissuedsincepublicationDateTextaffectedEUROPEANSTANDARDENISO6143NORMEEUROPEENNEEuropaischenormJune2025ICS71.040.40SupersedesENISO6143:2006EnglishVersionGasanalysis-ComparisonmethodsfordeterminingandcheckingthecompositionofcalibrationgasmixturesISO6143:2025Analysedesgaz-MethodesdeComparaisonpourlaGasanalyse-VergleichsverfahrenzurBestimmungunddeterminationetlaverificationdelacompositiondesUberpriifungderZusammensetzungvonmelangesdegazd,etalonnage(ISO6143:2025)Kalibriergasgemischen(ISO6143:2025)ThisEuropeanStandardwasapprovedbyCENon3June2025.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCEN-CENELECManagementCentreortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCEN-CENELECManagementCentrehasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Bulgaria,Croatia,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,RepublicofNorthMacedonia,Romania,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,TiirkiyeandUnitedKingdom.富EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITEEUROPEENDENORMALISATIONEuropaischeskomiteefurnormungRef.No.ENISO6143:2025ECEN-CENELECManagementCentre:RuedelaScience23,B-1040Brussels©2025CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.BSENISO6143:2025ENISO6143:2025(E)EuropeanforewordThisdocument(ENISO6143:2025)hasbeenpreparedbyTechnicalCommitteeISO/TC158"Analysisofgases"incollaborationwithTechnicalCommitteeCEN/TC238"Testgases,testpressures,appliancecategoriesandgasappliancetypes"thesecretariatofwhichisheldbyAFNOR.ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextorbyendorsement,atthelatestbyDecember2025,andconflictingnationalstandardsshallbewithdrawnatthelatestbyDecember2025.Attentionisdrawntothepossibilitythatsomeoftheelementsofthisdocumentmaybethesubjectofpatentrights.CENshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.ThisdocumentsupersedesENISO6143:2006.Anyfeedbackandquestionsonthisdocumentshouldbedirectedtotheusers'nationalstandardsbody/nationalcommittee.AcompletelistingofthesebodiescanbefoundontheCENwebsite.AccordingtotheCEN-CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Bulgaria,Croatia,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,RepublicofNorthMacedonia,Romania,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,TiirkiyeandtheUnitedKingdom.EndorsementnoticeThetextofISO6143:2025hasbeenapprovedbyCENasENISO6143:2025withoutanymodification.ContentsPageForeword.Introductionvi2 Normativereferences13 Termsanddefinitions14 Symbolsandabbreviatedterms35 Principle46 Generalprocedure56.1 Determinationoftheanalysisfunction56.2 Validationoftheanalysisfunction96.2.1 Purpose96.2.2 Validationoftheresponsemodel96.2.3 Examiningconformancewithuncertaintyrequirements106.2.4 Driftc