ISO INTERNATIONAL STANDARD 6565 Fifth edition 2015-12-15 Tobacco and tobacco products Draw resistance of cigarettes and pressure drop of filter rods Standard conditions and measurement Tabac et produits du tabac - Résistance au tirage des cigarettes et perte de charge des batonnets-filtres - Conditions normalisées et mesurage Reference number ISO 6565:2015(E) SO International Organization for Standardization @ IS0 2015 HEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS under ted without license from IHS IS0 6565:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, Published in Switzerland All rights reserved. Unless otherwise specified, 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. ISOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Intenatinair ganization for Standardization icensee-ZHEJIANG INSTOF STANDARDIZAoISQ05 - All rights reserved Not for Resale, 2016/3/29 05:06:31 etworking permitted without license from IHS IS0 6565:2015(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. .1 2 Normative references 3 Terms and definitions ..1 4 Test conditions .2 4.1 Test conditions common to cigarettes and filter rods .2 4.1.1 General .2 4.1.2 Airflow .2 4.1.3 Position .3 4.2 Conditions particular to cigarettes - Insertion of the test piece 3 4.3 Conditions particular to filter rods Encapsulation 3 5 Instrument calibration .3 6 Procedure .3 6.1 Conditions common to vacuum and pressure instruments .3 6.2 Conditions particular to vacuum instruments .3 6.3 Conditions particular to pressure instruments (for filter rods only) .4 7 Expression of results .4 8 Precision .4 8.1 Interlaboratory test .4 8.2 Repeatability 4 8.3 Reproducibility ..5 9 Test report ..5 Annex A (normative) Calibration of pressure drop transfer standards ..6 Annex B (informative) Results of an interlaboratory trial ..14 Annex C (informative) Comparison of draw resistance or pressure drop measurement: Critical flow orifice instruments versus constant mass flow instruments ..18 Bibliography .20 iii =ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS under thout license from IHS