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Standards Development
This document specifies a method for the determination by ion chromatography of the total amount of each of the individual chelating agents EDTA, HEEDTA, and DTPA in inorganic fertilizers and EDTA and DTPA in organo-mineral fertilizers.
The method allows the identification and the determination of the total water-soluble fraction of each of these chelating agents. It does not allow to distinguish between the free form and the metal bound form of the chelating agents.
This method applies to inorganic and organo-mineral fertilizers containing chelates of one or more of the following micronutrients: cobalt, copper, iron, manganese, zinc and with a mass fraction of at least 0,1 %.
This document is applicable to fertilizing product blends, where the 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: inorganic fertilizers or organo-mineral fertilizers is the highest % in the blend by mass or volume, or in the case of liquid form by dry mass.
Additional information on eventual interferences in fertilizing product blends is provided in Clause 5.
In the frame of standardization request M/564 and its amendments harmonized standards shall refer to test methods to be applied for verifying the conformity of CE marked fertilizing products with the requirements set out in Regulation (EU) 2019/1009.
This European Standard describes the test method to be used in order to determine the content of certain chelating agents (EDTA, DTPA and HEEDTA) in fertilizers.
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