ISO INTERNATIONAL STANDARD 5398-2 IULTCS/IUC 8:2 First edition 2009-01-15 Leather Chemical determination of chromic oxide content Part 2: Quantification by colorimetric determination Cuir- Dosage chimique de I'oxyde de chrome - Partie 2: Quantification par dosage colorimétrique Reference number ISO 5398-2:2009(E) IULTCS/IUC 8:2:2009(E) @ ISO 2009 y IHS under ted without license from IHS Not for Resale ISO 5398-2:2009(E) IULTCS/IUC 8:2:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The IsO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT @ ISO2009 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland @ IS0 2009 - All rights reserved py IHS unde I without license from IHS Not for Resale ISO 5398-2:2009(E) IULTCS/IUC 8:2:2009(E) Contents Page Foreword. Introduction 1 Scope 2 Normative references 3 Terms and definitions... 4 Principle... 5 Sampling and sample preparation.. 2 6 Reagents... 6.1 Alkaline fusion method 6.2 Photometric determination .. 7 Apparatus 8 Methods. 8.1 Alkaline fusion method . 8.2 Measurement of the aqueous solution, 8.3 Preparation of the calibration solution.. 9 Check of the analytical system ... 10 Calculation and expression of results 10.1 General...... 10.2 Repeatability. 11 Test report. Annex A (informative) Determination of water and other volatile matter. Copyright Inteatinal organizaionfar standardizalion ghts reserved ii ut license from IHS Not for Resale