BSENIS05815-1:2019 Incorporating corrigendum November 2019 BSl Standards Publication Water quality Determination of biochemical oxygen demand after n days (BODn) Part 1: Dilution and seeding method with allylthiourea addition bsi. BSENIS05815-1:2019 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN IS0 5815-1:2019.It is identicaltoIS05815-1:2019.It supersedes BSEN1899-1:1998,which is withdrawn. TheUK participationinitspreparationwas entrusted to Technical Committee EH/3/5, Biological Methods. A list oforganizations represented on this committee can be obtained on requestto its secretary. This publication does not purport to include all the necessary provisions ofa contract.Users areresponsibleforits correct application. @TheBritishStandards Institution2019 Published by BSI Standards Limited 2019 ISBN9780539121520 ICS13.060.50; 13.060.70 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the StandardsPolicyandStrategyCommitteeon30September2019. Amendments/corrigendaissuedsincepublication Date Textaffected 30November2019 ImplementationofCENcorrectionnotice13No vember2019:Supersession details corrected BSENIS05815-1:2019 EN IS0 5815-1 EUROPEANSTANDARD NORME EUROPEENNE EUROPAISCHE NORM September 2019 ICS13.060.50 Supersedes EN 1899-1:1998 English Version Water quality - Determination of biochemical oxygen demand after n days (BODn) - Part 1: Dilution and seeding method with allylthiourea addition (IS0 5815-1:2019) Qualite de I'eau - Détermination de la demande Wasserbeschaffenheit - Bestimmung des biochimique en oxygene apres n jours (DBOn) - Partie biochemischen Sauerstoffbedarfs nach n Tagen (BSBn) 1: Méthode par dilution et ensemencement avec apport - Teil 1: Verdinnungs- und Impfverfahren mit Zugabe d'allylthiourée (IS0 5815-1:2019) von Allylthioharnstoff (IS0 5815-1:2019) This European Standard was approved by CEN on 26 July 2019. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givingthis European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. cen EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEENDENORMALISATION EUROPAISCHES KOMITEEFUR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels @2019CEN All rights of exploitation in any form and by any means reserved Ref.No.EN ISO 5815-1:2019 E worldwideforCENnationalMembers