ISO INTERNATIONAL STANDARD 16878 First edition 2016-07-01 Iron ores Determination of metallic iron content Iron(Il) chloride titrimetric method Minerais de fer - Dosage du fer métallique - Methode titrimeétrique au chlorure de fer(lll) Reference number ISO 16878:2016(E) ISO International Organization for Standardization see=ZHEJIANG INST OF STANDARDIZATION C1 5956617 @IS02016 vided by IHS under I No reproduction or networking permitted without license from IHS IS0 16878:2016(E) COPYRIGHT PROTECTED DOCUMENT IS0 2016, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form 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 Internatinir DrganizationforStandardization Licensee-ZHEJIANG INST OF STANDARDIZoISQ6 -All rights reserved Not for Resale, 2016/8/16 08:28:41 No reproduction or networking permited without license from IHS IS0 16878:2016(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references ..1 3 Terms and definitions 4 Principle 5 Reagents. ..1 6 Apparatus ..2 7 Sampling and sample preparation ..3 8 Procedure .3 8.1 Number of determinations. .3 8.2 Preparation of test portions. .3 8.3 Determination .3. 9 Expression of results. .4 9.1 Calculation of the metallic iron content 4 9.2 General treatment of result. 4 9.2.1 Repeatability and permissible tolerances .4 9.2.2 Determination of analytical result .4 9.2.3 Between-laboratories precision 9.2.4 Check for trueness. .5 9.2.5 Calculation of final result .6 10 Test report Annex A (normative) Flowsheet of the procedure for the acceptance of test results ..7 Annex B (informative) Derivation of precision statements ..8 Bibliography 9 iii nSee=ZHEJIANG INST OF STANDARDIZATION C15956617 vithout license from IHS