ISO INTERNATIONAL STANDARD 16000-42 First edition 2023-08 Indoor air - Part 42: Measurement of the particle number concentration by condensation particle counters Airintérieur Partie 42: Mesurage de la concentration en nombre de particules au moyen de compteurs de particules a condensation Reference number IS0 16000-42:2023(E) Tso IS02023 IS0 16000-42:2023(E) COPYRIGHT PROTECTED DOCUMENT @IS02023 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 on or IsoO'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: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2023 - All rights reserved