BSIS017420-2:2021 BSl Standards Publication Respiratory protective devices - Performance requirements Part 2: Requirements for filtering RPD bsi. BSISO17420-2:2021 BRITISH STANDARD Nationalforeword This British Standard is theUK implementation of IS017420-2:2021. The UK participation in its preparation was entrusted to Technical CommitteePH/4, Respiratory protection. A list of organizations represented on this committee can be obtained on requestto its committeemanager. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. TheBritishStandards Institution2021 Published byBSI Standards Limited 2021 ISBN9780580522734 ICS13.340.30 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 BSIS017420-2:2021 ISO INTERNATIONAL STANDARD 17420-2 First edition 2021-01 Respiratory protective devices - Performance requirements - Part 2: Requirements for filtering RPD Appareilsdeprotection respiratoire-Exigencesdeperformances Partie 2:Dispositifsde filtration Reference number IS0 17420-2:2021(E) ISO @ ISO 2021