SIST-TS CEN/TS 17785:2023

SLOVENSKI STANDARD
01-februar-2023
Organsko-mineralna gnojila - Določevanje sredstev za kelatiranje in
kompleksiranje
Organo-mineral fertilizers - Determination of chelating and complexing agents
Organisch-mineralische Düngemittel - Bestimmung von Chelat- und Komplexbildnern
Engrais organo-minéraux - Détermination des agents chélatants et complexants
Ta slovenski standard je istoveten z: CEN/TS 17785:2022
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TS 17785
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
April 2022
TECHNISCHE SPEZIFIKATION
ICS 65.080
English Version
Organo-mineral fertilizers - Determination of chelating
and complexing agents
Engrais organo-minéraux - Détermination des agents Organisch-mineralische Düngemittel - Bestimmung
chélatants et complexants von Chelat- und Komplexbildnern
This Technical Specification (CEN/TS) was approved by CEN on 13 March 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 17785:2022 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 Sampling and sample preparation . 6
4.1 Sampling . 6
4.2 Sample preparation . 6
5 Requirements . 6
5.1 General . 6
5.2 Determination of the fraction of chelated micronutrients . 6
5.3 Identification of chelating agents . 6
5.4 Determination of the fraction of complexed micronutrients . 6
5.5 Identification of complexing agents . 6
Bibliography . 8

European foreword
This document (CEN/TS 17785:2022) 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 organizations 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
Regulation (EU) 2019/1009 [1] lays down the rules on the making available on the market of EU
fertilizing products and the specific safety and quality requirements for the defined product function
categories (PFCs).
Organo-mineral fertilizers have been classified into PFC 1 (B), which has been divided into two groups
PFC 1 (B) (I) [solid organo-mineral fertilizers] and PFC (B) (II) [liquid organo-mineral fertilizers].
An organo-mineral fertilizer is a co-formulation of:
a) one or more inorganic fertilizers, as specified in PFC 1 (C), and;
b) one or more materials containing: organic carbon (Corg); and nutrients of solely biological origin.
Inorganic Fertilizers have been classified into PFC 1 (C), which has been divided into two groups PFC 1
(C) (I) [inorganic macronutrient fertilizers] and PFC 1 (C) (II) [inorganic micronutrient fertilizers].
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
...