ISO 19396-1 2025.docx

Z5XISOInternationalStandardISO19396-1Secondedition2025-06Paintsandvarnishes一DeterminationofpHvalue一Part1:pHsensorswithglassmembranePeinturesetvernisDeterminationdeIavaleurdepHPartie1:SondesdepHamembraneenVerreReferencenumberISO19396-l:2025(en)COPYRIGHTPROTECTEDDOCUMENT©ISO2025Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401Ch.deBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.orgWebsite:www.iso.orgPublishedinSwitzerlandContentsPageForewordivIntroductionv1 Scope12 Normativereferences13 Termsanddefinitions14 Principle45 Apparatusandmaterials45.1 pHmeasuringapparatus45.2 pHmeter55.3 pHsensor55.4 Buffersolutions75.5 StoragesolutionforthepHsensors.76 Sampling77 PrOCedUre77.1 Testconditions77.2 Calibration77.3 Numberofdeterminations87.4 MeasuringthepHvalue88 Evaluation89 Precision89.1 General89.2 Repeatabilitylimit,r89.3 Reproducibilitylimit,R910 Testreport9Annex A (informative)RecommendedpHsensorsfordifferentgroupsofcoatingmaterials,basedontheresultsofinterlaboratorytests10Annex B (informative)Determinationofprecision12Bibliography14ForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.TheproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives,Part1.Inparticular,thedifferentapprovalcriterianeededforthedifferenttypesofISOdocumentshouldbenoted.ThisdocumentwasdraftedinaccordancewiththeeditorialrulesoftheISO/IECDirectives,Part2(seeWWW.iso.org/directives).ISOdrawsattentiontothepossibilitythattheimplementationofthisdocumentmayinvolvetheuseof（八）patent(三).ISOtakesnopositionconcerningtheevidence,validityorapplicabilityofanyclaimedpatentrightsinrespectthereof.Asofthedateofpublicationofthisdocument,ISOhadnotreceivednoticeof（八）patent(三)whichmayberequiredtoimplementthisdocument.HoweverlImplementersarecautionedthatthismaynotrepresentthelatestinformation,whichmaybeobtainedfromthepatentdatabaseavailableatWWW.iso.org/patents.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexplanationofthevoluntarynatureofstandards,themeaningofISOspecifictermsandexpressionsrelatedtoconformityassessment,aswellasinformationaboutISO'sadherencetotheWorldTradeOrganization(WTO)principlesintheTechnicalBarrierstoTrade(TBT),seeWWW.iso.org/iso/foreword.htmLThisdocumentwaspreparedbyTechnicalCommitteeISO/TC35,Paintsandvarnishes,SubcommitteeSC9,Generaltestmethodsforpaintsandvarnishes,incollaborationwiththeEuropeanCommitteeforStandardization(CEN)TechnicalCommitteeCEN/TC139,Paintsandvarnishes,inaccordancewiththeAgreementontechnicalcooperationbetweenISOandCEN(ViennaAgreement).Thissecondeditioncancelsandreplacesthefirstedition(ISO19396-1:2017),whichhasbeentechnicallyrevised.Themainchangesareasfollows: definitionsfortheoreticalslope,''stabilityofmeasuredValUe","potentiometricmeasurementchain”and("referenceelement1'havebeendeleted; theterm"pHelectrode11hasbeenchangedto“pHSenSOr"intheentiretextincludingthetitleofthedocument; thecalibration(7.2)hasbeenclarified; thenormativereferenceshavebeenupdated.AlistofallpartsintheISO19396seriescanbefoundontheISOwebsite.Anyfeedbackorquestionsonthisdocumentshouldbedirectedtotheuser'snationalstandardsbody.Acompletelistingofthesebodiescanbefoundatwww.iso.orR/members.htmLIntroductionThepHvalueofaqueousproductsisofdecisiveimportancefortheproductpropertiesanddurability.ThisdocumentcoversamethodforlaboratorymeasurementofthepHvalueofpolymerdispersionsandcoatingmaterialsusingpHsensorswithaglassmembrane.ISO19396-2specifiesamethodformeasuringthepHvalueusingpHsensorswithion-sensitivefield-effecttransistor(ISFET)technology.PaintsandvarnishesDeterminationofpHvalue一Part1:pHsensorswithglassmembrane1 ScopeThisdocumentspecifiesamethodforlaboratorymeasurementofthepHvalueofpolymerdispersionsandcoatingmaterialsusingpHsensorswithaglassmembrane.2