BS-EN-ISO-5983-2-2005.pdf
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1、BRITISH STANDARD BS EN ISO 5983-2:2005 Animal feeding stuffs Determination of nitrogen content and calculation of crude protein content Part 2: Block digestion/steam distillation method The European Standard EN ISO 5983-2:2005 has the status of a British Standard ICS 65.120 ? Licensed Copy: sheffiel
2、dun sheffieldun, na, Sun Nov 19 13:52:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 5983-2:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 19 August 2005 BSI 19 August 2005 ISBN 0 580 46420 2 National foreword This British Stan
3、dard is the official English language version of EN ISO 5983-2:2005. It is identical with ISO 5983-2:2005. The UK participation in its preparation was entrusted to Technical Committee AW/10, Animal feeding stuffs, which has the responsibility to: A list of organizations represented on this committee
4、 can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility
5、of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. ai
6、d enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This d
7、ocument comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 14, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendmen
8、ts issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:52:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 5983-2 July 2005 ICS 65.120 English Version Animal feeding stuffs - Determination of n
9、itrogen content and calculation of crude protein content - Part 2: Block digestion/steam distillation method (ISO 5983-2:2005) Aliments des animaux - Dtermination de la teneur en azote et calcul de la teneur en protines brutes - Partie 2: Mthode de digestion en bloc et distillation la vapeur (ISO 59
10、83-2:2005) Futtermittel - Bestimmung des Stickstoffgehaltes und Berechnung des Rohproteingehaltes - Teil 2: Blockaufschluss/Dampfdestillationsverfahren (ISO 5983- 2:2005) This European Standard was approved by CEN on 1 June 2005. CEN members are bound to comply with the CEN/CENELEC Internal Regulati
11、ons which stipulate the conditions for giving this 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 Central Secretariat or to any CEN member. This Europ
12、ean Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the natio
13、nal standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EURO
14、PEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2005 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 5983-2:2005: E Licensed
15、 Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:52:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Foreword This document (EN ISO 5983-2:2005) has been prepared by Technical Committee ISO/TC 34 “Agricultural food products“ in collaboration with Technical Committee CEN/TC 327 “Animal feeding stuffs -
16、 Methods of sampling and analysis“, the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2006, and conflicting national standards shall be withdrawn at
17、the latest by January 2006. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland
18、, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 5983-2:2005 has been approved by CEN as EN ISO 5983-2:2005 without any modifications. EN ISO 5983-2:200
19、5 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:52:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 5983-2:2005(E) INTERNATIONAL STANDARD ISO 5983-2 First edition 2005-07-01 Animal feeding stuffs Determination of nitrogen content and calculation of crude protein content
20、 Part 2: Block digestion/steam distillation method Aliments des animaux Dtermination de la teneur en azote et calcul de la teneur en protines brutes Partie 1: Mthode de digestion en bloc et distillation la vapeur EN ISO 5983-2:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:52:09 GMT+
21、00:00 2006, Uncontrolled Copy, (c) BSI ii Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:52:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Contents Page Foreword iv 1Scope . 1 2Normative references. 1 3Terms and definitions. 2 4Principle. 2 5Reagents 2 6Apparatus 4 7Sampling 4 8Prepara
22、tion of test sample. 5 9Procedure 5 10Calculation and expression of results 7 11Precision 8 12Test report . 9 Annex A (informative) Results of interlaboratory test 10 Annex B (informative) Automatic distillation with potentiometric endpoint detection. 13 Bibliography. 14 EN ISO 5983-2:2005 Licensed
23、Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:52:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally
24、 carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the w
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