ISO/TR TECHNICAL REPORT 24697 First edition 2011-08-15 Textiles and textile products Guidelines on the determination of the precision of a standard test method by interlaboratory trials Textiles et produits textiles Lignes directrices pour la determination de la fidelite d'une methode d'essai normalisée au moyen d'essais d'interlaboratoires Reference number ISO/TR 24697:2011(E) @ ISO 2011 ISO/TR 24697:2011(E) COPYRIGHT PROTECTED DOCUMENT @ISO2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either isO at the address below or isO's memberbody inthe country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @IsO2011-All rights reserved ISO/TR 24697:2011(E) Contents Page Foreword .iv Introduction 1 Scope 2 Normative references.. 3 Terms and definitions 4 Requirements for an interlaboratory precision trial 4.1 General .... 4.2 Personnel requirements 4.3 Laboratory requirements.... 4.4 Sample requirements.. 4.5 Organization of the interlaboratory trial. 4.6 Conducting the interlaboratory trial.. 4.7 Analysis of the results.... Annex A (informative) Form examples .... 5 Annex B (informative) Statistical assessment.. Iso 2011-All rights reserved ii