EN 15561:2023

SLOVENSKI STANDARD
01-junij-2024
Nadomešča:
SIST EN 15561:2009
Anorganska gnojila - Določanje celotnega dušika v kalcijevem cianoamidu, ki
vsebuje nitrate
Inorganic fertilizers - Determination of total nitrogen in calcium cyanamide containing
nitrates
Anorganische Düngemittel - Bestimmung des Gesamtstickstoffs in nitrathaltigem
Kalkstickstoff
Engrais inorganiques - Dosage de l'azote total dans la cyanamide calcique nitratée
Ta slovenski standard je istoveten z: EN 15561:2023
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 15561
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2023
EUROPÄISCHE NORM
ICS 65.080 Supersedes EN 15561:2009
English Version
Inorganic fertilizers - Determination of total nitrogen in
calcium cyanamide containing nitrates
Engrais inorganiques - Dosage de l'azote total dans la Anorganische Düngemittel - Bestimmung des
cyanamide calcique nitratée Gesamtstickstoffs in nitrathaltigem Kalkstickstoff
This European Standard was approved by CEN on 26 June 2023.

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 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
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
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, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15561:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 4
5 Reagents . 4
6 Apparatus and equipment . 5
7 Sampling and sample preparation . 6
8 Procedure . 6
8.1 Preparation of the solution for analysis . 6
8.2 Analysis of the solution . 6
8.3 Blank test . 7
8.4 Control test . 7
9 Expression of the result . 7
10 Test report . 8
Bibliography . 9
European foreword
This document (EN 15561:2023) has been prepared by Technical Committee CEN/TC 260 “Fertilizers
and liming materials”, the secretariat of which is held by DIN.
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 February 2024, and conflicting national standards shall
be withdrawn at the latest by February 2024.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 15561:2009.
In comparison with the previous edition EN 15561:2009, the following technical modifications have been
made:
— technical change to the preparation of the solution, i.e. deletion of the last paragraph of 8.1;
— deletion of former tables and addition of a technically revised Table (8.2);
— deletion of distillation apparatus drawings;
— rewording the Expression of result (Clause 9).
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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, Türkiye and the United
Kingdom.
1 Scope
This document specifies a method for the determination of total nitrogen in calcium cyanamide. The
method is applicable to calcium cyanamide containing nitrates.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 1482-2, Fertilizers and liming materials — Sampling and sample preparation — Part 2: Sample
preparation
EN 12944-1, Fertilizers and liming materials — Vocabulary — Part 1: General terms
EN 12944-2, Fertilizers and liming materials — Vocabulary — Part 2: Terms relating to fertilizers
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 12944-1 and EN 12944-2 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
4 Principle
Reduction of nitrate nitrogen to ammonia with metallic iron and stannous chloride solution. Digestion in
sulfuric acid. Distillation of the ammonia from an alkaline solution, absorption in an excess of sulfuric acid
volumetric solution and back-titration with sodium
...