prEN 17762

Inorganic fertilizers - Determination of the copper content in ammonium nitrate fertilizers of high nitrogen content

This document specifies a method for the determination of the copper content in ammonium nitrate fertilizers of high nitrogen content.
This document is applicable to the fertilizing products blends where a blend is a mix of at least two of the following components: fertilizers, liming materials, soil improvers, growing media, inhibitors, plant biostimulants, and where the following category: inorganic fertilizers is the highest % in the blend by mass or volume, or in the case of liquid form by dry mass. If inorganic fertilizer is not the highest % in the blend, the European Standard for the highest % of the blend applies. In case a fertilizing product blend is composed of components in equal quantity, the user decides which standard to apply. Variations in analytical methods for fertilizing product blends can lead to differing results as some components or matrix interactions can affect the outcome. Validation procedures have shown that developed standard methods are robust and reliable across diverse product compositions, but possible interferences and unexpected results when analysing fertilizing product blends are possible.

Anorganische Düngemittel - Bestimmung des Kupfergehaltes in Ammoniumnitratdüngemitteln mit hohem Stickstoffgehalt

Dieses Dokument legt ein Verfahren zur Bestimmung des Kupfergehalts in Ammoniumnitrat-Düngemitteln mit hohem Stickstoffgehalt fest.
Dieses Dokument ist anwendbar auf Düngeproduktmischungen, bei denen eine Mischung aus mindestens zwei der folgenden Komponenten besteht: Düngemittel, Kalkdünger, Bodenverbesserungsmittel, Kultursubstrate, Hemmstoffe, Pflanzen-Biostimulanzien und wenn die Kategorie „anorganische Düngemittel“ den höchsten Prozentsatz in der Mischung bezüglich Masse oder Volumen, oder im Falle von flüssigen Formen bezüglich Trockenmasse ausmacht. Wenn das anorganische Düngemittel nicht den höchsten Prozentsatz in der Mischung ausmacht, gilt die Europäische Norm für den höchsten Prozentsatz der Mischung. Falls eine Düngeproduktmischung sich aus Bestandteilen gleicher Menge zusammensetzt, entscheidet der Anwender, welche Norm angewendet wird. Variationen in analytischen Verfahren für Düngeproduktmischungen können zu unterschiedlichen Ergebnissen führen, da einige Komponenten oder Matrixwechselwirkungen das Ergebnis beeinflussen können. Validierungen haben gezeigt, dass die entwickelten Standardverfahren robust und zuverlässig über unterschiedliche Produktzusammensetzungen hinweg sind. Jedoch sind mögliche Interferenzen und unerwartete Ergebnisse bei der Analyse von Düngeproduktmischungen möglich.

Engrais inorganiques - Détermination de la teneur en cuivre des engrais à base de nitrate d'ammonium à forte teneur en azote

Le présent document spécifie une méthode de détermination de la teneur en cuivre dans les engrais à base de nitrate d'ammonium à forte teneur en azote.
Le présent document est applicable aux mélanges de fertilisants constitués d'au moins deux des composants suivants: engrais, amendements minéraux basiques, amendements du sol, supports de culture, inhibiteurs, biostimulants des végétaux, et dans lesquels la catégorie « engrais inorganiques » représente le pourcentage le plus élevé du mélange en masse ou en volume, ou dans le cas d'un liquide, en masse sèche. Si l'engrais inorganique ne représente pas le pourcentage le plus élevé du mélange, la Norme européenne relative au pourcentage le plus élevé du mélange s'applique. Dans le cas où le mélange de fertilisants est constitué de composants en quantités égales, l'utilisateur décide quelle norme appliquer. Les variations dans les méthodes d'analyse des mélanges de fertilisants peuvent conduire à des résultats différents, car certaines interactions de composants ou de la matrice peuvent affecter le résultat. Les procédures de validation ont montré que les méthodes normalisées développées sont robustes et fiables pour diverses compositions de produits, mais des interférences éventuelles et des résultats inattendus lors de l'analyse des mélanges de fertilisants sont possibles.

Anorganska gnojila - Določanje bakra v gnojilih iz amonijevega nitrata z veliko vsebnostjo dušika

General Information

• Status: Not Published
• Publication Date: 28-Feb-2028
• ICS: 65.080 - Fertilizers
• Technical Committee: CEN/TC 260 - Fertilizers and liming materials
• Drafting Committee: CEN/TC 260/WG 7 - Chemical analysis
• Current Stage: 4020 - Submission to enquiry - Enquiry
• Start Date: 12-Mar-2026
• Due Date: 13-Oct-2026
• Completion Date: 12-Mar-2026
• Directive: Not Harmonized2019/1009 - Regulation (EU) 2019/1009 of the European Parliament and of the Council of 5 June 2019 laying down rules on the making available on the market of EU fertilising products and amending Regulations (EC) No 1069/2009 and (EC) No 1107/2009 and repealing Regulation (EC) No 2003/2003 (Text with EEA relevance)
• Mandate: M/564 - Fertilising products in support of Regulation (EU) 2019/1009
• Mandate: M/564 AMD 1 - amending Implementing Decision C(2020) 612 as regards certain harmonised standards and standardisation deliverables, deadlines for their adoption and the duration of the validity of the standardisation request
• Mandate: M/564 AMD 2 - Commission Implementing decision amending Implementing Decision C(2020)612 as regards harmonised standards, the deadlines for the adoption of those standards and the duration of the validity of the standardisation request to the European Committee for Standardisation as regards the EU fertilising products in support of Regulation (EU) 2019/1009 of the European Parliament and of the Council
• Ref Project: oSIST prEN 17762:2026 - Inorganic fertilizers - Determination of the copper content in ammonium nitrate fertilizers of high nitrogen content

Relations

• Revises: CEN/TS 17762:2022 - Inorganic fertilizers - Determination of the copper content in ammonium nitrate fertilizers of high nitrogen content
• Effective Date: 01-May-2024

Overview

prEN 17762: Inorganic fertilizers - Determination of the copper content in ammonium nitrate fertilizers of high nitrogen content is a draft European Standard developed by CEN/TC 260. This standard defines a robust analytical method for accurately determining copper levels in ammonium nitrate fertilizers, specifically those with high nitrogen content. It applies to a wide range of fertilizer blends where inorganic fertilizers predominate, encompassing not only straight fertilizers but also complex blends containing components such as liming materials, soil improvers, plant biostimulants, and others.

Copper content in fertilizers is a critical parameter, impacting both crop safety and environmental compliance. Reliable and harmonized analysis supports manufacturers, regulatory authorities, and agricultural professionals in ensuring product quality and meeting EU regulatory requirements.

Key Topics

• Scope and Applicability

  • Applies to ammonium nitrate fertilizers of high nitrogen content
  • Covers blends where inorganic fertilizer is the principal component by mass, volume, or dry mass
  • Provides user guidance when blends contain equal proportions of components

• Analytical Method

  • Copper is determined through either atomic absorption spectrophotometry (AAS) or inductively coupled plasma optical emission spectrometry (ICP-OES)
  • Standardized procedures ensure accuracy and reliability across diverse fertilizer matrices
  • Includes clear requirements for reagents, apparatus, and sample preparation

• Sampling and Sample Preparation

  • Follows principles laid out in EN 1482-2 for representative sampling and preparation
  • Emphasizes the importance of preventing contamination and ensuring sample integrity

• Precision and Reliability

  • Precision validated through inter-laboratory studies
  • Addresses potential interferences when analyzing complex fertilizing product blends
  • Recognizes the robustness of the method but notes that product blend variability may affect results

Applications

Implementation of prEN 17762 is valuable across the fertilizer production and supply chain:

• Compliance Verification

  • Manufacturers can demonstrate conformity to European fertilizer regulations regarding trace element content
  • Supports regulatory bodies in market surveillance and product control

• Quality Assurance and Product Labelling

  • Accurate copper determination allows for truthful product declarations, supporting marketing and transparency
  • Facilitates quality control in production and supply processes

• Agricultural Best Practices

  • Enables agronomists, distributors, and farmers to assess copper levels, optimizing plant nutrition while minimizing risks of over-application and environmental harm

• Fertilizer Blends

  • Particularly relevant for complex mixes where inorganic fertilizer content is significant
  • Ensures consistent analytical approach across diverse product formulations

Related Standards

For comprehensive fertilizer analysis and quality management, the following standards are closely related and often used in conjunction:

• EN 1482-2: Fertilizers, liming materials and inhibitors - Sampling and sample preparation - Part 2: General sample preparation provisions
• prEN 12944-1: Fertilizers, liming materials and inhibitors - Vocabulary - Part 1: General terms
• prEN 12944-2: Fertilizers, liming materials and inhibitors - Vocabulary - Part 2: Terms relating to fertilizers
• EN 1482-1: Fertilizers, liming materials and inhibitors - Sampling and sample preparation - Part 1: General sampling provisions
• ISO 5725 (Parts 1 and 2): Accuracy (trueness and precision) of measurement methods and results

prEN 17762 supersedes CEN/TS 17762:2022, reflecting the current best practices and harmonized requirements for copper determination in high-nitrogen ammonium nitrate fertilizers, ensuring consistency and comparability across the European fertilizer industry.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2026
Anorganska gnojila - Določanje bakra v gnojilih iz amonijevega nitrata z veliko
vsebnostjo dušika
Inorganic fertilizers - Determination of the copper content in ammonium nitrate fertilizers
of high nitrogen content
Anorganische Düngemittel - Bestimmung des Kupfergehaltes in
Ammoniumnitratdüngemitteln mit hohem Stickstoffgehalt
Engrais inorganiques - Détermination de la teneur en cuivre dans les engrais à base de
nitrate d'ammonium et à forte teneur en azote
Ta slovenski standard je istoveten z: prEN 17762
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2026
ICS 65.080 Will supersede CEN/TS 17762:2022
English Version
Inorganic fertilizers - Determination of the copper content
in ammonium nitrate fertilizers of high nitrogen content
Engrais inorganiques - Détermination de la teneur en Anorganische Düngemittel - Bestimmung des
cuivre dans les engrais à base de nitrate d'ammonium Kupfergehaltes in Ammoniumnitratdüngemitteln mit
et à forte teneur en azote hohem Stickstoffgehalt
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 260.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17762:2026 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
6.1 Atomic absorption spectrophotometer . 5
6.2 Balance . 5
6.3 Beaker, . 5
6.4 Graduated flask . 5
6.5 Copper-free filter paper . 5
7 Sampling and sample preparation . 5
7.1 Sampling . 5
7.2 Sample preparation . 5
8 Procedure . 5
8.1 Preparation of the solution for analysis . 6
8.2 Blank solution . 6
8.3 Determination . 6
8.3.1 Preparation of sample and blank solutions . 6
8.3.2 Preparation of the calibration solutions . 6
8.4 Measurement . 6
9 Expression of the results . 6
10 Precision . 6
10.1 Inter-laboratory study . 6
10.2 Repeatability . 7
10.3 Reproducibility . 7
11 Test report . 7
Annex A (informative) Results of the inter-laboratory study . 8
A.1 Inter-laboratory study . 8
A.2 Statistical results . 8
Bibliography . 10
European foreword
This document (prEN 17762:2026) has been prepared by Technical Committee CEN/TC 260 “Fertilizers
and liming materials”, the secretariat of which is held by DIN.
This document is currently submitted to CEN Enquiry.
This document will supersede CEN/TS 17762:2022.
CEN/TS 17762:2022:
a) the CEN Technical Specification has been adopted as a European Standard;
b) update of Scope (Clause 1);
c) update of Normative References (Clause 2);
d) characteristics of distilled water have been added (5.1);
e) concentration of copper solutions have been added (5.7 and 5.8);
f) Sampling and sample preparation (Clause 7) has been updated.
g) the measurement (8.4) has been updated;
h) Clause 10 (Precision) and Annex A including results of inter-laboratory study added;
i) update of Bibliography.
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.
1 Scope
This document specifies a method for the determination of the copper content in ammonium nitrate
fertilizers of high nitrogen content.
This document is applicable to the fertilizing products blends where a blend is a mix of at least two of the
following components: fertilizers, liming materials, soil improvers, growing media, inhibitors, plant
biostimulants, and where the following category: inorganic fertilizers is the highest % in the blend by
mass or volume, or in the case of liquid form by dry mass. If inorganic fertilizer is not the highest % in the
blend, the European Standard for the highest % of the blend applies. In case a fertilizing product blend is
composed of components in equal quantity, the user decides which standard to apply. Variations in
analytical methods for fertilizing product blends can lead to differing results as some components or
matrix interactions can affect the outcome. Validation procedures have shown that developed standard
methods are robust and reliable across diverse product compositions, but possible interferences and
unexpected results when analysing fertilizing product blends are possible.
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
...