ISO INTERNATIONAL STANDARD 15985 Second edition 2014-05-01 Plastics Determination of the ultimate anaerobic biodegradation under high-solids anaerobic-digestion conditions Method by analysis of released biogas Plastiques Evaluation de la biodégradation anaérobie ultime dans des conditions de digestion anaérobie a teneur élevée en solides Méthode par analyse du biogaz libére Reference number ISO 15985:2014(E) ISO International Organization for Standardization @ IS0 2014 dardization 5956617 ed without license from IHS IS0 15985:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2014 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. ISOcopyrightoffice 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 Prganizationfor Standardization Not for Resale, 2015/3/11 02:24:16 networking permitted without license from IHS IS0 15985:2014(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Principle ..2 5 Test environment. .2 6 Reagents ..2 7 Apparatus. ..3 8 Procedure. .3 8.1 Preparation of the inoculum ..3 8.2 Preparation of test material and reference material 4 8.3 Start-up of the test. .4 8.4 Incubation period. 4 8.5 Termination of the test .5 9 Calculation and expression of results .5 9.1 Calculation of gaseous carbon .5 9.2 Calculation of the percentage biodegradation .5 9.3 Calculation of loss in mass ..6 9.4 Expression of results. ..6 10 Validity of results .6 11 Test report .6 Annex A (informative) Principle of test system ..8 Annex B (informative) Example of loss in mass determination .9 Bibliography .10 iii vided by IHS under ithout license from IHS