International ISO Standard ISO 18314-4 Analytical colorimetry Second edition 2024-01 Part 4: Metamerism index for pairs of samples for change of illuminant Analyse colorimétrique - Partie 4: Indice de metamerisme de paires d'échantillons pour changementd'illuminant Referencenumber ISO 18314-4:2024(en) @ ISO 2024 IS0 18314-4:2024(en) COPYRIGHT PROTECTED DOCUMENT @IS02024 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 theinternet or an intranet, withoutprior writtenpermission.Permission can berequestedfrom eitherIso attheaddress below or Iso's member body in the country ofthe requester ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: copyright@iso.org Website: www.iso.org Published in Switzerland @ IS0 2024 - All rights reserved ii