DANSK DS/EN 13366 PDF

This standard defines a method for the determination of the chelated trace element content and the chelated fraction of the trace elements (micronutrients) cobalt, copper, iron, manganese and zinc in fertilizers. This method applies to fertilizers containing one or more of the trace elements cobalt, copper, iron, manganese and zinc, chelated by one or more chelating agents of the group of the polyamino polycarboxylic acids, previously determined alone or in combination with major (N, P, K) and/or secondary (S, Na, Ca, Mg) elements. The limit of determination of the chelated trace element content varies between 0,005% in the simple matrices with high amounts of chelated trace elements, and 0,5% in more complex cases.