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dnaSRPS CEN/TS 17788:2021

Organo-mineral fertilizers - Determination of the fraction of complexed micronutrients

General information

50.60     Dec 20, 2021



Technical Specification



This document specifies a general method for the determination of the micronutrients complexed by complexing agents in organo-mineral fertilizers. The method allows the determination of the total concentration of each complexed micronutrient in complexes after subtraction of the chelated micro-nutrients content, but it does not identify the individual complexing agents.
This procedure concerns EU organo-mineral fertilizing products which contain complexed micro-nutrients covered by Regulation (EU) 2019/1009 [6]. The method is applicable to a mass fraction of the metal complexed of at least 0,07 %, 0,006 % and 0,035 % of Fe, Mn and Zn respectively (see [7]). A lower limit of quantification has not been established for Cu and Co.

Related directives

Directives related to this standard.


Life cycle


dnaSRPS CEN/TS 17788:2021
50.60 Close of voting. Proof returned by secretariat
Dec 20, 2021

Related project

Adopted from CEN/TS 17788:2022