ISO INTERNATIONAL STANDARD 1409 Sixth edition 2020-08 Plastics/rubber - Polymer dispersions and rubber latices (natural and synthetic) Determination of surface tension Plastiques/caoutchouc-Dispersionsdepolymeresetlatexde caoutchouc (naturel et synthetique)Détermination de la tension superficielle Referencenumber IS01409:2020(E) ISO @IS02020 IS01409:2020(E) COPYRIGHTPROTECTEDDOCUMENT @IS02020 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 below orIso's memberbody in the country ofthe requester. ISO copyright office CP 401 •Ch.de Blandonnet 8 CH-1214 Vernier, Geneva Phone:+4122749 0111 Email: [email protected] Website:www.iso.org Published in Switzerland ii @IS0 2020 - All rights reserved IS01409:2020(E) Contents Page Foreword ..iv 1 Scope ..1 2 Normative references ..1 3 Terms and definitions Principle .2 4 4.1 Method A .2 .2 4.2 Method B 5 Reagents .2 6 Apparatus. .2 7 Sampling. .2 8 Procedure .3 8.1 Method A .3 8.1.1 Preparation of apparatus 3 8.1.2 Calibration. 3 8.1.3 Preparation ofthe test sample .3 8.1.4 Determination .3 8.2 Method B .4 8.2.1 Preparationofapparatus 4 8.2.2 Calibration. ..4 8.2.3 Preparation ofthe test sample 4 8.2.4 Determination. .5 9 Expression ofresults .6 9.1 Method A .6 Calibration against standard mass .6 9.1.1 9.1.2 Calibration against a standard liquid .7 9.2 Method B .8 10 Precision ..8 11 Test report ..8 AnnexA(informative)Precision. Annex B (informative) Correction factors ofmethod A .11 Bibliography .12 @ IS0 2020 -All rights reserved ii