BS IS0 4869-6:2019 BSl Standards Publication Acoustics Hearing protectors Part 6: Determination of sound attenuation of active noise reduction earmuffs bsi. BS IS0 4869-6:2019 BRITISH STANDARD National foreword This British Standard is the UK implementation of IS0 4869-6:2019 The UK participation in its preparation was entrusted to Technical Committee EH/1/1, Hearing. 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. @ The British Standards Institution 2019 Published by BSI Standards Limited 2019 ISBN9780580869013 ICS13.340.20 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Amendments/corrigenda issued since publication Date Textaffected BS IS0 4869-6:2019 INTERNATIONAL ISO STANDARD 4869-6 First edition 2019-02-15 Acoustics Hearing protectors - Part 6: Determination of sound attenuation of active noise reduction earmuffs Acoustique - Protecteurs individuels contre le bruit - Partie 6: Determination de I'affaiblissement acoustique des serre-tete aréductionactivedubruit Reference number IS0 4869-6:2019(E) so IS02019