ISO INTERNATIONAL STANDARD 28399 Third edition 2021-03 Dentistry - External tooth bleaching products Médecine bucco-dentaire - Produits d'éclaircissement dentaire par voieexterne 1 - Reference number IS0 28399:2021(E) OSI ISO2021 IS0 28399:2021(E) COPYRIGHTPROTECTEDDOCUMENT 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 i @ IS0 2021 - All rights reserved