BS IS0 21675:2019 BSl Standards Publication Water quality Determination of perfluoroalkyl and polyfluoroalkyl substances (PFAS) in water Method using solid phase extraction and liquid chromatography. tandem mass spectrometry (LC-MS/MS) bsi. BSISO21675:2019 BRITISH STANDARD Nationalforeword This British Standard is theUK implementation of IS021675:2019. The UK participation in its preparation was entrusted to Technical CommitteeEH/3/2,Physical chemical andbiochemicalmethods. A list of organizations represented on this committee can be obtained on requestto its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. TheBritishStandardsInstitution2019 PublishedbyBSIStandardsLimited2019 ISBN9780580983481 ICS13.060.50 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the StandardsPolicyandStrategyCommitteeon31October2019. Amendments/corrigendaissued sincepublication Date Textaffected BS ISO 21675:2019 ISO INTERNATIONAL 21675 STANDARD First edition 2019-10 Water quality Determination of perfluoroalkyl and polyfluoroalkyl substances (PFAS) in water Method using solid phase extraction and liquid chromatography-tandem mass spectrometry (LC-MS/MS) QualitedeI'eau-Déterminationdessubstancesd'alkyleperfluores etpolyfluores(SPFA)dansI'eau-Méthodeparextractionenphase solideetchromatographie liquideetspectromeétriedemasseen tandem (CL-SM/SM) Reference number ISO 21675:2019(E) ISO @IS02019