ISO INTERNATIONAL STANDARD 11852 Secondedition 2017-04 Rubber Determination of magnesium content of field natural rubber latex by titration Caoutchouc Détermination par titrage de la teneur en magnésium du latex de plantation de caoutchouc naturel Reference number IS0 11852:2017(E) International Organization for Standardization @ IS0 2017 =ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS under lic itted without license from IHS IS0 11852:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, 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 copyright@iso.org www.iso.org Internatinair Prganization for Standardization icensee-ZHEJIANG INSTOF STANDARDIZAoISQ07 -All rights reserved Not for Resale, 2017/5/16 00:45:08 etworking permitted without license from IHS IS0 11852:2017(E) Contents Page Foreword ..iv Introduction. 1 Scope.. 2 Normativereferences 3 Terms and definitions 4 Principle ..1 5 Apparatus .2 6 Reagents ..2 7 3 Procedure. 8 Expression of results 9 Precision ..4 10 Test report ..4 Annex A (informative) Precision. .5 Bibliography .7 iii see=ZHEJIANG INST OF STANDARDIZATION C15956617 vided by IHS under se with ISi ed without license from IHS