ISO INTERNATIONAL STANDARD 5631-2 Fourth edition 2022-07 Paper and board Determination of colour by diffuse reflectance Part 2: Outdoor daylight conditions (D65/10°) Papier et carton - Détermination de la couleur par reflectance diffuse- Partie 2: Conditions de lumiere du jour extérieure (D65/10) Reference number IS0 5631-2:2022(E) ISO @ISO2022 IS0 5631-2:2022(E) COPYRIGHT PROTECTED DOCUMENT @IS02022 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 memberbody inthe country of the requester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 0111 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2022 - All rights reserved