ISO INTERNATIONAL STANDARD 14088 IULTCS/IUC 32 Second edition 2020-03 Leather Chemical tests Quantitative analysis of tanning agents by filter method Cuir-Essaischimiques-Analysequantitativedes agents de tannageparlaméthodeaufiltrecloche Reference numbers IS014088:2020(E) IULTCS/IUC32:2020(E) @ISO 2020 IS014088:2020(E) IULTCS/IUC 32:2020(E) COPYRIGHTPROTECTEDDOCUMENT IS02020 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 below or Iso's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22749 0111 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ISo 2020 -All rights reserved IS0 14088:2020(E) IULTCS/IUC 32:2020(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references 3 Terms and definitions 4 Principle 5 Reagents. ..1 6 Apparatus .2 7 Samplingandsamplepreparation .4 8 Instrumental analysis. .4 8.1 Preparationoftheanalytical solution .4 8.1.1 Vegetable tanning agents 4 8.1.2 Synthetic tanning agents .5 8.2 .5 Preparationof theProcterbell 8.3 De-tanning the analytical solution (determination of the non-tanning agents) .5 8.4 Determination of soluble substances ..6 8.5 Determination oftotal solids .6 9 Calculationand expressionoftheresults .7 10 Testreport .8 AnnexA (normative)Determinationofhidepowderblankvalue .9 AnnexB (informative) Suppliersofhidepowder .10 @IS0 2020 -All rights reserved ili