ISO INTERNATIONAL STANDARD 13099-3 First edition 2014-07-01 Colloidal systems Methods for zeta potential determination - Part 3: Acoustic methods Systemes colloidaux - Methodes de détermination du potentiel zéta- Partie3:Méthodesacoustiques Reference number IS0 13099-3:2014(E) LSO IS02014 IHS under itted without license from IHS Not for Resale IS0 13099-3:2014(E) COPYRIGHTPROTECTEDDOCUMENT ISO2014 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 Case postale 56:CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland @ IS0 2014 - All rights reserved No reproductic networking permited without license from IHS Not for Resale IS0 13099-3:2014(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms, definitions and symbols. ..1 Electric double layer (EDL) .1 3.2 Electrokinetic phenomena 3.3 Electroacoustic phenomena 4 4 Symbols. ..6 5 Principle .7 6 Zeta potential probe design elements ..8 7 Determination of the dynamic electrophoretic mobility .8 7.1 Subtracting background electroacoustic signal generated by ions .9 8 Calculation of zeta potential .10 8.1 General .10 8.2 Isolated double layers 10 8.3 Overlapped double layers ..13 9 Operational procedures .13 9.1 Requirements. .13 9.2 Verification .14 9.3 Sources of measurement error ..15 Annex A (informative) Electroacoustics: high frequency electrokinetics ..16 Annex B (informative) Verification of electroacoustic theories ..17 Bibliography .20 iii d by IHS under se with ISt lout license from IHS Not for Resale