ISO INTERNATIONAL STANDARD 17403 First edition 2014-03-01 Rubber Determination of magnesium content of field and concentrated natural rubber latices by titration (cyanide-free method) Caoutchouc-Déterminationpartitragede lateneurenmagnesium du latex deplantation et du latex concentré de caoutchouc naturel (méthode sans cyanure) Reference number ISO17403:2014(E) LSO @IS02014 without license from IHS Not for Resale IS017403:2014(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. + 4122 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 reproduction or networking permited without license from IHS Not for Resale IS017403:2014(E) Contents Page Foreword ..iv 1 Scope 2 Normativereferences 3 Terms and definitions 4 Apparatus 5 Reagents. .2 6 Method A-Determination ofmagnesium contentoffield latex .2 6.1 Principle. .2 6.2 Procedure .3 6.3 Numberof determinations .3 6.4 Calculation of results .3 6.5 Expression of result. .3 7 Method B-Determination ofmagnesium contentofconcentrated latex .4 7.1 Principle. ..4 7.2 Procedure 4 7.3 Number of determinations ..4 7.4 Calculationof results 5 7.5 Expression of result .5 8 Test report ..5 AnnexA(informative)Precision. .7 Bibliography .10 iii IHS under I thout license from IHS Not for Resale