ISO/TR TECHNICAL REPORT 18931 Firstedition 2001-06-01 Imaging materials Recommendations for humidity measurement and control Materiaux pour I'image --- Recommandations pour lemesurage et le controle de I'humidite Reference number ISO/TR18931:2001(E) (So @ISO2001 ISO/TR18931:2001(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, thisfle may be printed or viewed but shallnot be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The Iso Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO2001 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 member body in the country of the requester. ISO copyright office Casepostale56.CH-1211Geneva20 Tel. + 4122 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.ch Printed in Switzerland := Iso2001-All rightsreserved ISO/TR 18931:2001(E) Contents Page Foreword. iv Introduction 1 Scope 2 Termsanddefinitions 3 Moisture contentof gases. 4 Measuring systems 5 Sensorlocation. 6 Recommendations Annex A importance of relative humidity.... Annex B Humidity control in storage areas.. Bibliography @IS0 2001 -All rights reserved ii