1、ICS 67.100.01Milch und Milchprodukte Bestimmung des Stickstoffgehaltes Verbrennungsverfahren nach Dumas (Routineverfahren)(ISO 14891 : 2002)Ref. No. DIN EN ISO 14891 : 2002-07English price group 13 Sales No. 111312.02DEUTSCHE NORM July 2002EN ISO 14891EN comprises 18 pages. No part of this standard
2、may be reproduced without the prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).Milk and milk productsDetermination of nitrogen content Routine method usingcombustion accordin
3、g to the Dumas principle (ISO 14891 : 2001)English version of DIN EN ISO 14891European Standard EN ISO 14891 : 2002 has the status of a DIN Standard.A comma is used as the decimal marker.National forewordThis standard has been published in accordance with a decision taken by CEN/TC 302 Milk and milk
4、products Methods of sampling and analysis to adopt, without alteration, International Standard ISO 14891as a European Standard.The responsible German body involved in its preparation was the Normenausschuss Lebensmittel undlandwirtschaftliche Produkte (Foodstuffs and Agricultural Products Standards
5、Committee), TechnicalCommittee Milch und Milchprodukte Probenahme- und Untersuchungsverfahren.The DIN Standards corresponding to the International Standard referred to in clause 2 and in theBibliography of the EN are as follows:ISO 707 DIN EN ISO 707ISO 5725-1 DIN ISO 5725-1ISO 5725-2 DIN ISO 5725-2
6、*)ISO 8968-1 DIN EN ISO 8968-1ISO 8968-2 DIN EN ISO 8968-2AmendmentsDIN 10467, November 1995 edition, has been superseded by the specifications of EN ISO 14891, which isidentical to ISO 14891.Previous editionDIN 10467: 1995-11.National Annex NAStandards referred to(and not included in Normative refe
7、rence, Bibliography and Annex ZA)DIN EN ISO 707 Milk and milk products Guidance on sampling (ISO 707 : 1997)DIN EN ISO 8968-1 Milk Determination of nitrogen content Part 1: Kjeldahl method (ISO 8968-1 : 2001)DIN EN ISO 8968-2 Milk Determination of nitrogen content Part 2: Block-digestion method (Mac
8、romethod) (ISO 8968-2 : 2001)*) Currently at draft stage.Supersedes DIN 10467,November 1995 edition.English versionICS 67.100.01Management Centre: rue de Stassart 36, B-1050 BrusselsEuropean Committee for StandardizationComit Europen de NormalisationEuropisches Komitee fr NormungMilk and milk produc
9、tsDetermination of nitrogen content Routine method using combustionaccording to the Dumas principle(ISO 14891 : 2002) 2002. CEN All rights of exploitation in any form and by any meansreserved worldwide for CEN national members.Ref. No. EN ISO 14891 : 2002 ELait et produits laitiers Dtermination de l
10、a teneur en azote Mthode pratique par combustionselon le principe de Dumas(ISO 14891 : 2002)Milch und Milchprodukte Bestimmung des Stickstoffgehaltes Verbrennungsverfahren nach Dumas(Routineverfahren)(ISO 14891 : 2002)This European Standard was approved by CEN on 2002-03-01.CEN members are bound to
11、comply with the CEN/CENELEC Internal Regulationswhich stipulate the conditions for giving this European Standard the status of anational standard without any alteration.Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management
12、Centre or to anyCEN member.The European Standards exist in three official versions (English, French, German).A version in any other language made by translation under the responsibility of aCEN member into its own language and notified to the Management Centre hasthe same status as the official vers
13、ions.CEN members are the national standards bodies of Austria, Belgium, the CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,Luxembourg, Malta, the Netherlands, Norway, Portugal, Spain, Sweden,Switzerland, and the United Kingdom.|March 2002EN ISO 14891Page 2EN ISO 14
14、891 : 2002ForewordInternational StandardISO 14891 : 2002 Milk and milk products Determination of nitrogen content Routine method usingcombustion according to the Dumas principle,which was prepared by ISO/TC 34 Agricultural food products of the International Organization forStandardization, has been
15、adopted by Technical Committee CEN/TC 302 Milk and milk products Methodsof sampling and analysis, the Secretariat of which is held by NEN, as a European Standard.This European Standard shall be given the status of a national standard, either by publication of an identicaltext or by endorsement, and
16、conflicting national standards withdrawn, by September 2002 at the latest.In accordance with the CEN/CENELEC Internal Regulations, the national standards organizations of thefollowing countries are bound to implement this European Standard:Austria, Belgium, the Czech Republic, Denmark, Finland, Fran
17、ce, Germany, Greece, Iceland, Ireland, Italy,Luxembourg, Malta, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom.Endorsement noticeThe text of the International Standard ISO 14891 : 2002 was approved by CEN as a European Standard withoutany modification.NOTE: Nor
18、mative references to international publications are listed in Annex ZA (normative).Page 3EN ISO 14891 : 20024444456666777777888899910101112141617Page 4EN ISO 14891 : 2002Page 5EN ISO 14891 : 2002Page 6EN ISO 14891 : 2002Page 7EN ISO 14891 : 2002Page 8EN ISO 14891 : 2002Page 9EN ISO 14891 : 2002Page 10EN ISO 14891 : 2002Page 11EN ISO 14891 : 2002Page 12EN ISO 14891 : 2002Page 13EN ISO 14891 : 2002Page 14EN ISO 14891 : 2002Page 15EN ISO 14891 : 2002Page 16EN ISO 14891 : 2002Page 17EN ISO 14891 : 2002Page 18EN ISO 14891 : 2002
