FprEN 17762

• Abstract:

  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.

• Status: Not Published
• Publication Date: 03-Feb-2027
• ICS: 65.080 - Fertilizers
• Technical Committee: CEN/TC 260 - Fertilizers and liming materials
• Drafting Committee: CEN/TC 260/WG 7 - Chemical analysis
• Current Stage: 4599 - Dispatch of FV draft to CMC - Finalization for Vote
• Start Date: 20-Aug-2026
• Due Date: 31-Aug-2027
• Completion Date: 20-Aug-2026
• Directive: Harmonized Standard2019/1009 - 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

• 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

FprEN 17762 is a European standard developed by CEN (European Committee for Standardization) that specifies a method for the determination of the copper content in ammonium nitrate fertilizers with high nitrogen content. This standardized test method ensures consistent copper measurement across various inorganic fertilizer products and blends. The procedure covers both straight fertilizers and blends where inorganic fertilizer is the predominant component by mass or volume.

This standard is essential for manufacturers, laboratories, and regulatory bodies involved in fertilizer quality control, helping to ensure that ammonium nitrate fertilizers are compliant with safety and regulatory requirements regarding trace copper concentrations.

Key Topics

• Scope and Applicability

  • Applies to inorganic fertilizers and blends in which inorganic fertilizer is the main component.
  • Relevant for solid and liquid fertilizers, liming materials, soil improvers, growing media, inhibitors, and plant biostimulants.
  • User discretion in cases where component proportions are equal.

• Analytical Method

  • Specifies sample dissolution in dilute hydrochloric acid.
  • Copper content determination via atomic absorption spectrophotometry (AAS) or inductively coupled plasma-optical emission spectrometry (ICP-OES).

• Sample Preparation

  • Details steps for representative sampling following standard reference methods.
  • Emphasizes the importance of preventing contamination and ensuring accurate representation of fertilizer composition.

• Precision and Validation

  • Highlights the robustness and reproducibility of the method through inter-laboratory studies.
  • Acknowledges possible interferences and the need for careful validation, especially for complex blends or low copper concentrations.

• Reporting Requirements

  • Mandates that reports include all critical information: sample identification, method used, results in mg/kg, analysis date, and any incidents affecting results.

Applications

• Fertilizer Quality Control: Enables manufacturers and regulatory agencies to consistently assess copper content in high-nitrogen fertilizers, supporting compliance with EU and national standards.
• Blended Fertilizer Analysis: Provides clear guidance for analyzing blends containing multiple fertilizer components, ensuring correct application of the method based on blend composition.
• Accurate Labeling and Safety: Helps ensure that copper levels meet regulatory thresholds, promoting safe agricultural practices and reliable product labeling.
• Laboratory Testing: Offers a validated, standardized procedure that laboratories can adopt for inter-laboratory comparability and reliable quality assurance.

Related Standards

Stakeholders should consider the following complementary and referenced standards when implementing FprEN 17762:

• EN 1482-1: Fertilizers, liming materials and inhibitors - Sampling and sample preparation - Part 1: General sampling provisions
• 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
• ISO 5725-1 & ISO 5725-2: Accuracy (trueness and precision) of measurement methods and results - General principles and repeatability/reproducibility

By adhering to FprEN 17762 and its related standards, organizations can achieve reliable, repeatable, and internationally recognized assessment of copper content in ammonium nitrate fertilizers, supporting quality, safety, and regulatory compliance within the fertilizer industry.

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
prEN 17762
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.

prEN 17762:2026 (E)
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
prEN 17762:2026 (E)
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.
prEN 17762:2026 includes the following significant technical changes with respect to
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.
prEN 17762:2026 (E)
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
...