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Standards Development
This document specifies a method for the determination of hexavalent chromium (chromium (VI)) in organic and organo-mineral fertilizers.
The method specified is suitable to quantify the chromium (VI) content in organic and organo- mineral fertilizers down to 2 mg/kg dry matter.
The results obtained from this method are strictly dependent on the extraction conditions. Results obtained by using other extraction procedures (extraction solution, pH of the extraction solution, extraction time, extraction temperature, etc.) are not comparable with the results produced by the procedure described in this document.
This document is applicable to 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 organic matter is present in at least one of the products in the blend. In case a fertilizing product blend is composed only of inorganic products, the European Standard for inorganic fertilizers applies.
Regulation (EU) 2019/1009 on fertilizing products includes requirements for organic and organo- mineral fertilizers. Appropriate methods are necessary to verify the conformity of CE-marked fertilizing products to the requirements of the Regulation.
The European Standard “Organic and organo-mineral fertilizers - Determination of Chromium (VI) content” describes the test method to be applied to determine chromium VI in the frame of standardization request M/564.
It is intended to become a harmonized standard.
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