BS IS0 11665-4:2021 — Tracked Changes compares BS IS0 11665-4:2021 with BS IS0 11665-4:2020 BSl Standards Publication Measurement of radioactivity in the environment Air: radon-222 Part 4: Integrated measurement method for determining average activity concentration using passive sampling and delayed analysis bsi. TRACKEDCHANGES IMPORTANT-PLEASENOTE This is a tracked changes copy and uses the following colour coding Text example 1 indicates added text (in green) Text example 2 indicates removed text (in red) indicates added graphicfigure ortable indicates removed graphicfigure ortable AboutTracked Changes This document is a PDF containing a Tracked Changes version of BSISO 11665-4, which compares BS ISO 11665-4:2021 with BSISO 11665-4:2020. The original version of BS IS0 11665-4:2021, appended at the end of this document, should be considered the version of record for this publication. @ The British Standards Institution 2021 Published by BSI Standards Limited 2021 ISBN9780539180329 Amendments/corrigendaissuedsincepublication Date Text affected BSIS0 11665-4:2021—Tracked Changes Nationalforeword This British Standard is the UK implementation of IS0 11665-4:20201s0 11665-4:2021. It supersedes BS IS011665-4:2012BS IS0 11665-4:2020, which is withdrawn. The UK participation in its preparation was entrusted to Technical CommitteeNCE/2,Radiationprotectionandmeasurement. A listoforganizations represented on this committee can be obtained onrequestto itscommitteemanager. Contractual and legal considerations This publication has been prepared in good faith, however no representation, warranty, assurance or undertaking (express or implied) is or will be made, and no responsibility or liability is or will be accepted by Bsl in relation to the adequacy, accuracy, completeness or reasonableness of this publication. All and any such responsibility and liability is expressly disclaimed to the full extentpermitted bythelaw. This publication is provided as is, and is to be used at the recipient's own risk The recipient is advised to consider seeking professional guidance withrespecttoitsuseofthispublication. This publication doesis not purportintended to include all the necessary provisions ofconstitute a contract. Users are responsible for its correct application. @TheBritish Standards Institution20202021 Published byBSI StandardsLimited20202021 ISBN 978 0 539 01224 8978 0 539 16031 4 ICS 17.240; 13.040.01;13.040.01 Compliancewith a British Standard cannotconfer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 fantary 2020March 2021. Amendments/corrigendaissuedsincepublication Date Text affected