EN 13654-1:2001

Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method

This European Standard specifies a method for the determination of nitrogen in soil improvers and growing media. The Kjeldahl method determines ammonium-N, nitrate-N, nitrite-N and organic N content of soil improvers and growing media. Nitrogen in N-N-linkages, N-O-linkages and some heterocyclics (especially pyridine) is only partially determined. [6], [7], [8]
The method is not applicable to liming materials and preformed materials such as mineral wool slabs and foam slabs.
NOTE   The requirements of the standard may differ from the national legal requirements for the declaration of the products concerned.

Bodenverbesserungsmittel und Kultursubstrate - Bestimmung von Stickstoff - Teil 1: Modifiziertes Verfahren nach Kjeldahl

Diese Europäische Norm legt ein Verfahren zur Bestimmung  von Stickstoff in Bodenverbesserungsmitteln und
Kultursubstraten fest. Mit dem Kjeldahl-Verfahren wird der Gehalt an Ammonium-N, Nitrat-N, Nitrit-N und organi-
schem Stickstoff in Bodenverbesserungsmitteln und Kultursubstraten  bestimmt. Stickstoff in N-N-Verbindungen,
N-O-Verbindungen und in einigen Heterocyclen (besonders Pyridin) wird nur teilweise bestimmt [6], [7], [8].
Das Verfahren gilt nicht für Calcium-/Magnesium-Bodenverbesserungsmittel und vorgeformte Materialien wie Platten
aus Mineralwolle und Schaumplatten.
ANMERKUNG   Die Anforderungen der Norm können von den nationalen gesetzlichen Vorgaben bezüglich der Deklaration der erwähnten
Produkte abweichen.

Amendements du sol et supports de culture - Détermination de l'azote - Partie 1: Méthode de Kjeldahl modifiée

La présente Norme européenne décrit une méthode pour la détermination de l'azote dans les amendements du sol et les supports de culture. La méthode de Kjeldahl détermine la teneur en N-ammonium, N-nitrate, N-nitrite et N organique des amendements du sol et des supports de culture. L'azote contenu dans les liaisons N-N, N-O et certains hétérocycliques (en particulier la pyridine) n'est déterminé que partiellement. [6], [7], [8].
Cette méthode ne s'applique pas aux amendements calciques ni aux matériaux préformés tels que la laine de roche et les mousses.
NOTE   Les exigences de la norme peuvent différer des obligations légales en vigueur pour la déclaration des produits concernés.

Izboljševalci tal in rastni substrati - Določevanje dušika - 1. del: Spremenjena Kjeldahlova metoda

General Information

• Status: Published
• Publication Date: 18-Sep-2001
• ICS: 65.080 - Fertilizers
• Technical Committee: CEN/TC 223 - Soil improvers and growing media
• Drafting Committee: CEN/TC 223/WG 4 - Analytical methods
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 03-Oct-2017
• Ref Project: SIST EN 13654-1:2002 - Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 13654-1:2002
01-november-2002
,]EROMãHYDOFLWDOLQUDVWQLVXEVWUDWL'RORþHYDQMHGXãLNDGHO6SUHPHQMHQD
.MHOGDKORYDPHWRGD
Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl
method
Bodenverbesserungsmittel und Kultursubstrate - Bestimmung von Stickstoff - Teil 1:
Modifiziertes Verfahren nach Kjeldahl
Amendements du sol et supports de culture - Détermination de l'azote - Partie 1:
Méthode de Kjeldahl modifiée
Ta slovenski standard je istoveten z: EN 13654-1:2001
ICS:
65.080 Gnojila Fertilizers
SIST EN 13654-1:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN 13654-1:2002

---------------------- Page: 2 ----------------------

SIST EN 13654-1:2002
EUROPEAN STANDARD
EN 13654-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2001
ICS 65.080
English version
Soil improvers and growing media - Determination of nitrogen -
Part 1: Modified Kjeldahl method
Amendements du sol et supports de culture - Bodenverbessungsmittel und Kultursubstrate - Bestimmung
Détermination de l'azote - Partie 1: Méthode de Kjeldahl von Stickstoff - Teil 1: Modifiziertes Verfahren nach Kjeldahl
modifiée
This European Standard was approved by CEN on 11 August 2001.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations 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 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 translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13654-1:2001 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------

SIST EN 13654-1:2002
EN 13654-1:2001 (E)
Contents
page
Foreword .3
1 Scope.4
2 Normative references.4
3 Terms and definitions .4
4 Principle .4
5 Reagents .4
6 Apparatus.5
7 Test sample.5
8 Procedure.5
9 Calculation .7
10 Expression of results.7
11 Precision .7
12 Test Report.7
Annex A (informative) Results of an interlaboratory trial to determine nitrogen (modified
Kjeldahl method) .8
Annex B (informative) Methods of analysis used in the interlaboratory trial.9
Bibliography.
...

SLOVENSKI STANDARD
SIST EN 13654-1:2002
01-november-2002
Izboljševalci tal in rastni substrati - Določevanje dušika - 1. del: Spremenjena
Kjeldahlova metoda
Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl
method
Bodenverbesserungsmittel und Kultursubstrate - Bestimmung von Stickstoff - Teil 1:
Modifiziertes Verfahren nach Kjeldahl
Amendements du sol et supports de culture - Détermination de l'azote - Partie 1:
Méthode de Kjeldahl modifiée
Ta slovenski standard je istoveten z: EN 13654-1:2001
ICS:
65.080 Gnojila Fertilizers
SIST EN 13654-1:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 13654-1:2002

---------------------- Page: 2 ----------------------
SIST EN 13654-1:2002
EUROPEAN STANDARD
EN 13654-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2001
ICS 65.080
English version
Soil improvers and growing media - Determination of nitrogen -
Part 1: Modified Kjeldahl method
Amendements du sol et supports de culture - Bodenverbessungsmittel und Kultursubstrate - Bestimmung
Détermination de l'azote - Partie 1: Méthode de Kjeldahl von Stickstoff - Teil 1: Modifiziertes Verfahren nach Kjeldahl
modifiée
This European Standard was approved by CEN on 11 August 2001.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations 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 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 translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13654-1:2001 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
SIST EN 13654-1:2002
EN 13654-1:2001 (E)
Contents
page
Foreword .3
1 Scope.4
2 Normative references.4
3 Terms and definitions .4
4 Principle .4
5 Reagents .4
6 Apparatus.5
7 Test sample.5
8 Procedure.5
9 Calculation .7
10 Expression of results.7
11 Precision .7
12 Test Report.7
Annex A (informative) Results of an interlaboratory trial to determine nitrogen (modified
Kjeldahl method) .8
Annex B (informative) Methods of analysis used in the interlaboratory trial.9
Bibliography.
...