ISO INTERNATIONAL STANDARD 16900-8 First edition 2015-05-01 Respiratory protective devices Methods of test and test equipment - Part 8: Measurement of RPD air flow rates of assisted filtering RPD Appareils de protection respiratoire - Méthodes d'essai et équipement d'essai- Partie 8: Mesurage des debit d'air des APR filtrants a ventilation assistee Reference number ISO 16900-8:2015(E) ISO International Organization for Standardization @ IS0 2015 Zhejiang Institute of Standardization 5956617 ed without license from IHS IS0 16900-8:2015(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. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Not for Resale,2015/8/609:45:49 networking permited without license from IHS IS0 16900-8:2015(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Prerequisites ..2 5 General test requirements ..2 6 Principle ..2 7 Test method .3 7.1 General .3 7.2 Measurement of flow rate using zero back pressure method .3 7.2.1 General .3 7.2.2 Test equipment. .3 7.2.3 Test procedure for RPD with a respiratory interface class T .3 7.2.4 Test procedure for RPD with a respiratory interface class L 7.3 Measurement of the interactive flow rate. .6 8 Test report .10 Annex A (normative) Application of uncertainty of measurement .12 iii icensee=Zhejiang Institute of Standardization 5956617 ithout license from IHS