BS IS0 23921:2020 BSl Standards Publication Cigarettes Determination of tobacco specific nitrosamines in mainstream cigarette smoke with an intense smoking regime - Method using LC-MS/MS bsi. BSISO23921:2020 BRITISH STANDARD Nationalforeword ThisBritish Standard is theUK implementationof IS023921:2020 The UK participation in its preparation was entrusted to Technical Committee AW/40, Tobacco and tobacco products. A list of organizations represented on this committee can be obtained on requesttoits committeemanager. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. TheBritishStandards Institution2020 Published byBSI Standards Limited 2020 ISBN9780539042009 ICS65.160 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Amendments/corrigendaissuedsincepublication Date Textaffected BS ISO 23921:2020 ISO INTERNATIONAL STANDARD 23921 First edition 2020-09 Cigarettes Determination of tobacco specific nitrosamines in mainstream cigarette smoke with an intense smoking regime Method using LC-MS/MS Cigarettes-Dosage des nitrosamines specifiques du tabac dans le courantprincipal de la fumee de cigarette avec unregime defumage intenseMéthodeparCL-SM/SM Reference number IS023921:2020(E) ISO @IS02020