SIST EN 13654-2:2002

Soil improvers and growing media - Determination of nitrogen - Part 2: Dumas method

This European Standard specifies a method for the determination of nitrogen in soil improvers and growing media. The dry combustion method was developed originally as a manual method by Dumas [5]. Its application is improved greatly due to the use of modern automated equipment and is applicable to all forms of nitrogen.
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 2: Verfahren nach Dumas

Diese Europäische Norm legt ein Verfahren zur Bestimmung von Stickstoff in Bodenverbesserungsmitteln und
Kultursubstraten fest. Das Trockenverbrennungsverfahren wurde ursprünglich von Dumas [5] als manuelles
Verfahren entwickelt. Die Anwendung dieses Verfahrens hat sich durch die Benutzung moderner automatischer
Geräte wesentlich verbessert. Das Verfahren gilt für alle Formen von Stickstoff.
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 2: Méthode de Dumas

La présente Norme européenne décrit une méthode de détermination de l'azote présent dans les amendements du sol et les supports de culture. La méthode de combustion sèche a tout d'abord été élaborée comme une méthode manuelle par Dumas [5]. Son application a été considérablement améliorée grâce à l'utilisation d'un équipement automatisé moderne. Elle est applicable à toutes les formes d'azote.
La 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 - 2. del: Metoda po Dumasu

General Information

• Status: Published
• Publication Date: 31-Oct-2002
• ICS: 65.080 - Fertilizers
• Technical Committee: KAT - Soil quality
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Nov-2002
• Due Date: 01-Nov-2002
• Completion Date: 01-Nov-2002
• Directive: TP136 - Uredba o predelavi biološko razgradljivih odpadkov in uporabi komposta ali digestata
• Ref Project: EN 13654-2:2001 - Soil improvers and growing media - Determination of nitrogen - Part 2: Dumas method

Relations

• Replaced By: oSIST prEN 13654-2:2025 - Soil improvers and growing media - Determination of nitrogen - Part 2: Dumas method
• Effective Date: 01-Dec-2025

Overview

SIST EN 13654-2:2002 is a European Standard established by the CEN (European Committee for Standardization) for the determination of nitrogen content in soil improvers and growing media using the Dumas dry combustion method. This standard specifies a method that measures all forms of nitrogen by combusting samples at high temperatures (at least 900°C) in the presence of oxygen. Originally developed as a manual method by Dumas, this technique has been significantly enhanced with modern automated equipment to improve accuracy and efficiency. Importantly, this method is not suitable for liming materials or preformed materials like mineral wool slabs or foam slabs.

The standard ensures consistent nitrogen analysis crucial for soil treatment, fertilizer production, and quality control in horticulture and agriculture sectors.

Key Topics

• Scope: Applicable to soil improvers and growing media, excluding liming and certain preformed materials.
• Principle: Dry combustion at high temperature oxidizes nitrogen compounds into measurable nitrogen gas.
• Apparatus: Uses modern Dumas analyzers with precise detection, supported by standard laboratory equipment like analytical balances.
• Sample Preparation: Follows EN 13040 requirements for preparation ensuring representative and accurate testing.
• Calibration: Employs nitrogen calibration substances such as acetanilide or amino acids with known nitrogen content.
• Calculation: Nitrogen content is calculated on a dry matter basis, expressed in milligrams of nitrogen per gram of dry sample.
• Precision: The method’s repeatability and reproducibility have been validated through interlaboratory trials, ensuring reliable results.
• Test Reporting: Includes detailed sample identification, test methods, results, moisture content, and bulk density.

Applications

• Soil Improvement Products: Determines nitrogen levels in organic or mineral soil improvers, ensuring proper nutrient composition.
• Growing Media: Helps producers and users of horticultural substrates verify nitrogen content for optimal plant growth.
• Fertilizer Quality Control: Enables manufacturers to certify nitrogen content, complying with European standards.
• Environmental Monitoring: Supports analysis of nitrogen in biowaste and composted materials for sustainable soil management.
• Research and Development: Provides a precise method for studying nitrogen dynamics in soil amendments and substrates.

Related Standards

• EN 13040:1999 – Sample preparation for chemical and physical testing of soil improvers and growing media, including moisture content and bulk density measurements.
• EN 13654-1 – Determination of nitrogen using the Modified Kjeldahl method, serving as a complementary testing procedure.
• EN 13651 & EN 13652 – Methods for extraction of soluble nutrients from soil improvers and growing media, relevant for broader nutrient analysis.
• ISO 5725 – Defines accuracy and precision in measurement methods, referenced in validating the Dumas method’s reliability.

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Keywords: EN 13654-2, Dumas method, nitrogen determination, soil improvers, growing media, dry combustion, nitrogen content, European Standard, CEN, fertilizer analysis, soil amendment quality, horticultural substrates, automated nitrogen analysis.

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2002
,]EROMãHYDOFLWDOLQUDVWQLVXEVWUDWL'RORþHYDQMHGXãLNDGHO0HWRGDSR
'XPDVX
Soil improvers and growing media - Determination of nitrogen - Part 2: Dumas method
Bodenverbesserungsmittel und Kultursubstrate - Bestimmung von Stickstoff - Teil 2:
Verfahren nach Dumas
Amendements du sol et supports de culture - Détermination de l'azote - Partie 2:
Méthode de Dumas
Ta slovenski standard je istoveten z: EN 13654-2:2001
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 13654-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2001
ICS 65.080
English version
Soil improvers and growing media - Determination of nitrogen -
Part 2: Dumas method
Amendements du sol et supports de culture - Bodenverbesserungsmittel und Kultursubstrate -
Détermination de l'azote - Partie 2: Méthode de Dumas Bestimmung von Stickstoff - Teil 2: Verfahren nach Dumas
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 13654-2:2001 E
worldwide for CEN national Members.

EN 13651:2001 (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 .5
10 Expression of results.6
11 Precision .6
12 Test Report.6
Annex A (informative) Results of an interlaboratory trial to determine nitrogen (Dumas method)7
Bibliography.8
EN 13651:2001 (E)
Foreword
This European Standard has been prepared by Technical Committee CEN/TC 223 "Soil improvers and
growing media", the secretariat of which is held by BSI.
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 March 2002, and conflicting national standards shall be withdrawn at
the latest by March 2002.
Annex A is informative.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark,
Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,
Spain, Sweden, Switzerland and the United Kingdom.
SAFETY PRECAUTIONS — Care should be taken when handling samples that may contain
sharps or is of a dusty nature.
1 Scope
This European Standard specifies a method for the determination of nitrogen in soil improvers and
growing media. The dry combustion method was developed originally as a manual method by Dumas
[5]. Its application is improved greatly due to the use of modern automated equipment and is
applicable to all forms of nitrogen.
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.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text, and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references, the latest edition of the publication referred to applies (including
amendments).
EN 13040:1999, Soil improvers and growing media - Sample preparation for ch
...