TECHNICAL ISO/TR REPORT 21624 First edition 2020-04 Nanotechnologies Considerations for in vitro studies of airborne nano- objects and their aggregates and agglomerates (NOAA) Nanotechnologies - Considérations pour les études in vitro des nano-objets en suspension dans I'air et de leurs agregats et agglomérats (NOAA) Reference number ISO/TR 21624:2020(E) ISO @ IS0 2020 IS0/TR 21624:2020(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2020 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting below or Iso's member body in the country of the requester. ISO copyright office CP 40i : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Fax: +41 22 749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland i @ IS0 2020 - All rights reserved