ISO INTERNATIONAL STANDARD 10707 First edition 1994-10-15 Water quality Evaluation in an aqueous medium of the "ultimate" aerobic biodegradability of organic compounds - Method by analysis of biochemical oxygen demand (closed bottle test) Qualité de I'eau - Evaluation en milieu aqueux de la biodégradabilite aérobie 《ultime> des composés organiques - Methode par analyse de la demande biochimique en oxygene (essai en fiole fermee) ISO Reference number ISO10707:1994(E) Copyright International Organization for Standardization d without license from IHS Not for Resale ISO 10707:1994(E) Foreword IsO (the International Organization for Standardization) is a worldwide technical committees. Each member body interested in a subject for which a technical comnittee has been established has the right to be represented on that committee. Internationai organizations, governmental and non-governmental, in liaison with IsO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on alt matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International a vote. International Standard IsO 10707 was prepared by Technical Committee ISO/TC 147,Waterquality.Subcommittee SC 5,Biologicalmethods. Annexes A, B and C of this International Standard are for information only. @ISO1994 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 the publisher. International Organization for Standardization Case Postale 56·CH-1211Geneve 20·Switzerland Printed in Switzerland ii CopyrightInternatinal Organizationfor Standardization ed without license from IHS Not for Resale INTERNATIONALSTANDARD ISO ISO 10707:1994(E) Water quality Evaluation in an aqueous medium of the "ultimate" aerobic biodegradability of organic compounds -- Method by analysis of biochemical oxygen demand (closed bottle test) WARNING --- SAFETY PRECAUTIONS - Activated sludge and sewage may contain potentially pathogenic organisms. Therefore appropriate precautions should be taken when handling them. Toxic test compounds and those whose properties are unknown should be handled with care. Scope are subject to revision, and parties to agreements based on this International Standard are encouraged This International Standard specifies a method, by to investigate the possibility of applying the most re- analysis of biochemical oxygen demand, for the cent editions of the standards indicated below. Members of IEC and ISO maintain registers of cur- biodegradability of organic compounds at a given rently valid International Standards. concentration by aerobic microorganisms. ISO 5813:1983, Water quality Determination of Theconditionsdescribedinthis InternationalStandard dissolved oxygen --- lodometric method. donotnecessarilyalways correspondtotheoptimal conditions for allowing the maximum value of bio- ISO5814:1990,Waterquality -Determination of degradation to occur. dissolved oxygen - Electrochemical probe method. The method applies to all organic compounds which ISO6060:1989,Water quality—Determination of the are sufficiently water soluble to prepare a stock sol- chemical oxygen demand. ution or poorly water soluble when using special dos- ing techniques. ISO9887:1992.Water quality — Evaluation of the aerobic biodegradability of organic compounds in an Due to the low concentration of test compound at the aqueous medium Semi-continuous activated beginning of the test, normally no special precautions sludge method (SCAS). for the toxicity of the test compound to the micro- organisms of the inoculum is necessary; if required a Iso 9888:1991, Water quality - -Evaluation of the parallel inhibition test can be performed. aerobic biodegradability of organi