ISO INTERNATIONAL STANDARD 16221 First edition 2001-02-01 Water quality Guidance for determination of biodegradability in the marine environment Qualite de I'eau-Lignes directrices pour la determination de la biodégradabilite en milieu marin Reference number ISO 16221:2001(E) ISO @ ISO 2001 y IHS under lic Not for Resale ISO 16221:2001(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 area. Adobe is atrademarkof AdobeSystems 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 @ISO2001 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56.CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.ch Web www.iso.ch Printed in Switzerland IsO2001-All rightsreserved itted without license from IHS Not for Resale ISO 16221:2001(E) Contents Page Foreword. iv Introduction 1 Scope 2 Normative references. 3 Terms and definitions 4 Principle.... 5 Test environment 6 Reagents.. 7 Apparatus 8 Test procedure... 6 Calculation and expression of results. 10 Validity of results. 11 Results of ring tests . 12 Test report 10 Bibliography 12 ili IHS under from IHS Not for Resi