ISO INTERNATIONAL STANDARD 17721-2 First edition 2021-08 Quantitative determination of antibacterial activity of ceramic tile surfaces Test methods Part 2: Ceramic tile surfaces with incorporated photocatalytic antibacterial agents Détermination quantitativede I'activite antibactérienne des surfaces des carreaux céramiques - Méthodes d'essai- Partie 2: Carreaux ceramiques incorporant des agents antibacteriens photocatalytiques en surface Reference number IS0 17721-2:2021(E) ISO @ ISO 2021 IS0 17721-2:2021(E) COPYRIGHTPROTECTED DOCUMENT IS02021 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 the internet or an intranet, without prior written permission. Permission can be requested from either Iso at the address below 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: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2021 - All rights reserved