prEN 17766

SLOVENSKI STANDARD
01-februar-2026
Organska in organsko-mineralna gnojila - Ekstrakcija z vodo za določanje
elementov
Organic and organo-mineral fertilizers - Extraction by water for subsequent determination
of elements
Organische und organisch-mineralische Düngemittel - Extraktion durch Wasser zur
anschließenden Bestimmung der Elemente
Engrais organiques et organo-minéraux - Extraction à l’eau pour le dosage ultérieur des
éléments
Ta slovenski standard je istoveten z: prEN 17766
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
December 2025
ICS 65.080 Will supersede CEN/TS 17766:2022
English Version
Organic and organo-mineral fertilizers - Extraction by
water for subsequent determination of elements
Engrais organiques et organo-minéraux - Extraction à Organische und organisch-mineralische Düngemittel -
l'eau pour le dosage ultérieur des éléments Extraktion durch Wasser zur anschließenden
Bestimmung der Elemente
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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17766:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 5
5 Sampling and sample preparation . 6
6 Reagents . 6
7 Apparatus . 6
8 Procedure. 6
9 Test Report . 7
Bibliography . 8

European foreword
This document (prEN 17766:2025) 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 the CEN Enquiry.
This document will supersede CEN/TS 17766:2022.
Compared to the previous edition, prEN 17766:2025 includes the following significant technical changes:
— the CEN Technical Specification has been adopted as a European Standard;
— Introduction added;
— Scope (Clause 1) updated including the clarification on fertilizing product blends and the analytical
method to be used;
— Reagents (Clause 6) updated with the addition of nitric acid;
— Apparatus (Clause 7) updated specifying more details and adding a remark regarding the quality of
the laboratory glassware;
— Procedure (Clause 8) updated describing more details on the procedure and making specific
adaptations to procedural changes;
— Bibliography updated.
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.
Introduction
Water is applied to extract available fraction of micronutrients from different matrices for their
subsequent determination by inductively coupled plasma atomic emission spectrometry (ICP-AES). A
similar procedure was applied for extraction of micronutrients from mineral fertilizers [2].
WARNING — Persons using this document should be familiar with usual laboratory practice. This
document does not purport to address all of the safety issues, if any, associated with its use. It is the
responsibility of the user to establish appropriate health and safety practices and to ensure compliance
with any national regulatory conditions.
IMPORTANT — It is absolutely essential that tests condu
...