IEC ISO Guide 98-1 Guide to the expression of Second edition 2024-02 uncertainty in measurement - Part 1: Introduction Guide pour I'expression de I'incertitude de mesure - Partie 1: Introduction A Reference number ISO/IEC Guide 98-1:2024(en) @ISO/IEC2024 IS0/IEC Guide 98-1:2024(en) COPYRIGHT PROTECTED DOCUMENT @ IS0/IEC2024 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: copyright@iso.org Website: www.iso.org Published in Switzerland @ IS0/IEC 2024 - All rights reserved ii