prEN 17779
(Main)Organo-mineral fertilizers - Extraction of phosphorus soluble in a neutral ammonium citrate solution
Organo-mineral fertilizers - Extraction of phosphorus soluble in a neutral ammonium citrate solution
This document specifies the procedure for the extraction of different organic and organo-mineral fertilizers with a solution of neutral ammonium citrate to enable a subsequent determination of phosphorus.
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: organic fertilizers, organo-mineral fertilizers is the highest % in the blend by mass or volume, or in the case of liquid form by dry mass. If the organic fertilizer or the organo-mineral 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.
Organisch-mineralische Düngemittel - Extraktion von Phosphor, der in neutralem Ammoniumcitrat löslich ist
Dieses Dokument legt das Verfahren zur Extraktion verschiedener organischer und organisch-mineralischer Düngemittel mit einer Lösung von neutralem Ammoniumcitrat fest, um eine anschließende Bestimmung von Phosphor zu ermöglichen.
Dieses Dokument ist auf Düngeproduktmischungen anwendbar, bei denen eine Mischung aus mindestens zwei der folgenden Komponenten besteht: Düngemittel, Kalkdünger, Bodenverbesserungsmittel, Kultursubstrate, Hemmstoffe und Pflanzen-Biostimulanzien, und bei denen die Kategorie organische und organisch-mineralische Düngemittel den höchsten Prozentsatz in der Mischung (Masse- oder Volumenanteil bzw. im Falle von Flüssigdünger Trockenmasseanteil) ausmacht. Wenn das organische Düngemittel oder das organisch-mineralische Düngemittel nicht den höchsten Prozentsatz in der Mischung ausmacht, ist die Europäische Norm für den höchsten Prozentsatz in der Mischung anwendbar. Im Falle, dass die Düngeproduktmischung aus Komponenten gleicher Menge besteht, 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 organo-minéraux - Extraction du phosphore soluble dans une solution de citrate d’ammonium neutre
Le présent document spécifie le mode opératoire d’extraction de différents engrais organiques et organo-minéraux avec une solution de citrate d’ammonium neutre pour permettre le dosage ultérieur du phosphore.
Le présent document est applicable aux mélanges de produits 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 organiques et organo-minéraux » représente le pourcentage le plus élevé du mélange en masse ou en volume, ou dans le cas d’un liquide, en masse sèche. Si les engrais organiques et organo-minéraux ne représentent pas le pourcentage le plus élevé du mélange, la Norme européenne relative au composant représentant le pourcentage le plus élevé du mélange s’applique. Dans le cas où le mélange de produits fertilisants est constitué de composants en quantités égales, l’utilisateur décide quelle norme appliquer. Les variations dans les méthodes d’analyse des mélanges de produits 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 que des interférences éventuelles et des résultats inattendus lors de l’analyse des mélanges de produits fertilisants sont possibles.
Organsko-mineralna gnojila - Ekstrakcija fosforja, topnega v nevtralni raztopini amonijevega citrata
General Information
- Status
- Not Published
- Publication Date
- 12-Sep-2027
- Technical Committee
- CEN/TC 260 - Fertilizers and liming materials
- Drafting Committee
- CEN/TC 260/WG 8 - Organic and organo-mineral fertilizers
- Current Stage
- 4020 - Submission to enquiry - Enquiry
- Start Date
- 15-Jan-2026
- Due Date
- 26-Apr-2026
- Completion Date
- 15-Jan-2026
Relations
- Effective Date
- 11-Jun-2025
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Frequently Asked Questions
prEN 17779 is a draft published by the European Committee for Standardization (CEN). Its full title is "Organo-mineral fertilizers - Extraction of phosphorus soluble in a neutral ammonium citrate solution". This standard covers: This document specifies the procedure for the extraction of different organic and organo-mineral fertilizers with a solution of neutral ammonium citrate to enable a subsequent determination of phosphorus. 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: organic fertilizers, organo-mineral fertilizers is the highest % in the blend by mass or volume, or in the case of liquid form by dry mass. If the organic fertilizer or the organo-mineral 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.
This document specifies the procedure for the extraction of different organic and organo-mineral fertilizers with a solution of neutral ammonium citrate to enable a subsequent determination of phosphorus. 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: organic fertilizers, organo-mineral fertilizers is the highest % in the blend by mass or volume, or in the case of liquid form by dry mass. If the organic fertilizer or the organo-mineral 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.
prEN 17779 is classified under the following ICS (International Classification for Standards) categories: 65.080 - Fertilizers. The ICS classification helps identify the subject area and facilitates finding related standards.
prEN 17779 has the following relationships with other standards: It is inter standard links to CEN/TS 17779:2022. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
prEN 17779 is associated with the following European legislation: EU Directives/Regulations: 2019/1009; Standardization Mandates: M/564, M/564 Amd 1, M/564 Amd 2. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
prEN 17779 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2026
Organsko-mineralna gnojila - Ekstrakcija fosforja, topnega v nevtralni raztopini
amonijevega citrata
Organo-mineral fertilizers - Extraction of phosphorus soluble in a neutral ammonium
citrate solution
Organisch-mineralische Düngemittel - Extraktion von Phosphor, der in neutralem
Ammoniumcitrat löslich ist
Engrais organo-minéraux - Extraction du phosphore soluble dans une solution de citrate
d’ammonium neutre
Ta slovenski standard je istoveten z: prEN 17779
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
January 2026
ICS 65.080 Will supersede CEN/TS 17779:2022
English Version
Organo-mineral fertilizers - Extraction of phosphorus
soluble in a neutral ammonium citrate solution
Engrais organo-minéraux - Extraction du phosphore Organisch-mineralische Düngemittel - Extraktion von
soluble dans une solution de citrate d'ammonium Phosphor, der in neutralem Ammoniumcitrat löslich ist
neutre
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 17779:2026 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. 7
8.1 Test portion . 7
8.2 Extraction . 7
9 Test report . 7
Bibliography . 8
European foreword
This document (prEN 17779:2026) 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 the CEN Enquiry.
This document will supersede CEN/TS 17779:2022.
Compared to the previous edition, prEN 17779:2026 includes the following significant technical changes:
— the CEN Technical Specification has been adopted as a European Standard;
— title adapted;
— Introduction added;
— Scope (Clause 1) updated including the clarification on fertilizing product blends and the analytical
method to be used;
— Reagents (Clause 6) added;
— Clause 9 (Test report) added;
— 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
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 conducted according to this document are carried out
by suitably trained staff.
1 Scope
This document specifies the procedure for the extraction of different organic and organo-mineral
fertilizers with a solution of neutral ammonium citrate to enable a subsequent determination o
...
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