ISO/TS TECHNICAL SPECIFICATION 22491 First edition 2019-05 Water pipe tobacco - Determination of carbon monoxide in the vapour phase of water pipe tobacco smoke NDIR method Reference number ISO/TS 22491:2019(E) @ IS0 2019 IS0/TS22491:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2019 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 or Iso's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved IS0/TS 22491:2019(E) Contents Page Foreword .iv 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Principle 5 Apparatus. 1 6 Standard gas mixtures 3 7 Procedure.. 3 7.1 Storage and conditioning 3 7.2 Calibration of the NDIR analyser 3 7.3 Smoking and collection of vapour phase. 3 7.3.1 Preparation of vapour-phase collection system 3 7.3.2 Smoking procedure 4 7.4 Measurement of carbon monoxide volume concentration 4 8 Expression of results 4 8.1 Calculation of the average volume of carbon monoxide per water pipe tobacco portion. 8.2 Calculation of the average mass of carbon monoxide per water pipe tobacco portion. 5 9 Repeatability and reproducibility 5 10 Test report. 5 10.1 General 5 10.2 Characteristic data about the water pipe tobacco sample and identification 5 10.3 Sampling 6 10.4 Description of test 6 10.5 Test results. 6 Bibliography 7 @ IS0 2019 - All rights reserved ii