ISO/TS TECHNICAL SPECIFICATION 10719 First edition 2016-12-01 Cast irons Determination of non- combined carbon content lnfrared absorption method after combustion in an induction furnace Fontes-Détermination du carbone non combiné- Méthode par absorption dans I'infrarouge apres combustion dans un four a induction Reference number IS0/TS 10719:2016(E) OSI International Organization for Standardization @IS02016 mitted without license from IHS IS0/TS 10719:2016(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 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 Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org networking permited without license from IHS IS0/TS 10719:2016(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references ..1 3 Terms and definitions ..1 4 Principle 5 Reagents. ..2 6 Apparatus ..2 7 Sampling. 8 Procedure .3 8.1 General operating instructions .3 8.2 Testportion .4 8.3 Blank test .4 8.4 Determination 4 8.4.1 Dissolution of the test portion 4 8.4.2 Filtration of the non-combined carbon .4 8.4.3 Measurements. 4 8.5 Establishingthecalibrationcurve ..5 8.5.1 Primary product calibration .5 8.5.2 Calibration by means of certified reference materials .5 9 Expression of results .6 9.1 Primary product calibratior .6 9.2 Calibration by means of certified reference materials ..6 10 Precision .6 11 Notes on the procedure 11.1 Preliminary blank tests 7 11.2 Preliminary tests on certified reference materials 7 12 Test report 7 Annex A (informative) Additional information on the international interlaboratory test Annex B (informative) Comparison between the results of the first and the second precision tests ..10 Annex C (informative) Effect of fine material in a sample on the determination of non- combined carbon content. ..11 Bibliography .14 ii thout license from IHS