Standards Development
This document specifies a method for the determination of the biuret content by high- performance liquid chromatography (HPLC) with UV detector.
This document is applicable to organic and organo-mineral fertilizers.
This document is applicable to fertilizing products blends where a blend is a mix of at least two of the following products: 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 document “Organic and organo- mineral fertilizers - Determination of biuret content” describes the test method to be applied to determine biuret in the frame of standardization request M/564
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