ANSI Standards Connect ET ( INTERNATIONAL ISO STANDARD 14644-4 Second edition 2022-11 Techno -GuestUser01-07/19/2023 Cleanrooms and associated controlled environments - Part 4: Design, construction and start-up Salles propres et environnements maitriseés apparentées Partie 4: Conception, construction et mise en service Reference number ISO 14644-4:2022(E) osi @IS02022 ANSI StandardsConnect ET IS0 14644-4:2022(E) -GuestUser01-07/19/2023 COPYRIGHTPROTECTEDDOCUMENT @ IS02022 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may or ISo's member body in the country of the requester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ Iso 2022 - All rights reserved