Technical ISO Report IS0/TR20659-2 Rheological test methods - First edition Fundamentals and interlaboratory 2024-03 comparisons - Part 2: Determination of the time- dependent structural change (thixotropy) Méthodes d'essai rhéologiques - Principes fondamentaux et comparaisons interlaboratoires - Partie 2: Détermination de la variation structurelle dans le temps (thixotropie) Referencenumber IS0/TR20659-2:2024(en) @ ISO 2024 IS0/TR 20659-2:2024(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 the internet or an intranet, without prior written permission. Permission can be requested from either Iso at the address below orIso'smemberbodyinthecountryoftherequester. 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 @ IS0 2024 - All rights reserved ii