CEN/TS 17783:2022

SLOVENSKI STANDARD
01-februar-2023
Sredstva za gnojenje - Določanje stabilnosti sredstev za gnojenje, ki vsebujejo
komplekse mikrohranil
Fertilizing products - Determination of the stability of fertilizing products containing
micronutrient complexes
Düngeprodukte - Bestimmung der Stabilität von Spurennährstoffkomplexen in
Düngeprodukten
Fertilisants - Détermination de la stabilité des fertilisants contenant des oligo-éléments
complexés
Ta slovenski standard je istoveten z: CEN/TS 17783:2022
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TS 17783
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
April 2022
TECHNISCHE SPEZIFIKATION
ICS 65.080
English Version
Fertilizing products - Determination of the stability of
fertilizing products containing micronutrient complexes
Fertilisants - Détermination de la stabilité des Düngeprodukte - Bestimmung der Stabilität von
fertilisants contenant des oligo-éléments complexés Spurennährstoffkomplexen in Düngeprodukten
This Technical Specification (CEN/TS) was approved by CEN on 21 February 2022 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

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, Turkey 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 17783:2022 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 . 6
5 Interferences . 6
6 Reagents . 6
7 Apparatus . 7
8 Sampling and sample preparation. 7
9 Procedure . 8
9.1 Preparation of the test sample solution . 8
9.2 Preparation of fertilizer solution in water . 8
9.3 Spectrometric determination . 8
9.4 Complexed micronutrient content quantification . 8
10 Calculation and expression of results . 9
10.1 Mass concentration of the micronutrient (i) in water at pH 6 and at pH 7 . 9
10.2 Stability of micronutrient complex in water at pH 6 and at pH 7 . 9
11 Test report . 10
Bibliography . 11

European foreword
This document (CEN/TS 17783:2022) has been prepared by Technical Committee CEN/TC 260
“Fertilizers and liming materials”, the secretariat of which is held by DIN.
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 has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association.
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 announce this Technical Specification: 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, Turkey
and the United Kingdom.
Introduction
Micronutrients are considered to be, in plant nutrition, a number of elements known to be needed in
small amounts for proper plant growth and development. The most common micronutrient metals are
Iron (Fe), Manganese (Mn), Cobalt (Co), Copper (Cu) and Zinc (Zn).
An EU fertilizing product shall consist solely of component materials complying with the requirements
for one or more of the component material categories (CMCs). CMC 1 corresponds with the virgin
material substances and mixtures.
If a micronutrient fertilizing product contains a substance, or one of the substances in the mixture,
which is intended to enhance the long-term availability to plants of micronutrients in the EU fertilizing
product, that substance is either a chelating agent or a complexing agent. According to Regulation (EU)
2019/1009 [2], EU fertilizing products containing complexed micronutrients shall remain stable in
water solution at pH 6 and pH 7 for at least one day.
This document defines a test method to check the micronutrient complex stability in solution at pH 6
and pH 7.
1 Scope
This document specifies a method for the determination of the soluble metal that remains in solution
after the application of a solution of the fertilizer substance containing micronutrient complexes in
water and adjusting the pH to 6 and pH 7 for at least one day.
The method applies to fertilizing products containing micronutrient complexes.
2 Normative references
The following documents are referred 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 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
EN 15962, Fertilizers — Determination of the complexed micro-nutrient content and of the complexed
fraction of micro-nutrients
EN 16962, Fertilizers — Extraction of water soluble micro-nutrients in fertilizers and removal of organic
compounds from fertilizer extracts
EN 16963, Fertilizers — Determination of boron, cobalt, copper, iron, manganese, molybdenum and zinc
using ICP-AES
EN 16965, Fertilizers — Determination of cobalt, copper, iron, manganese and zinc using flame atomic
absorption spectrometry (FAAS)
CEN/TS 17786-1, Inorganic micronutrient fertilizers — Determination of the chelated micronutrient
content and the chelated fraction of micronutrients — Part 1: Treatment with a cation exchange resin
CEN/TS 17786-2, Inorganic micronutrient fertilizers — Determination of the chelated micronutrient
content and the chelated fraction of micronutrients — Part 2: Determination of EDTA, DTPA, HEEDTA,
IDHA or EDDS
...