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DIN EN 17765
Organic and organo-mineral fertilizers - Determination of biuret content by high-performance liquid chromatography (HPLC)
DIN EN 17766
Organic and organo-mineral fertilizers - Extraction by water for subsequent determination of elements
DIN EN 17767
Organo-mineral fertilizers - Extraction of phosphorus by formic acid
DIN EN 17768
Organic and organo-mineral fertilizers - Digestion by aqua regia for subsequent determination of elements
DIN EN 17769
Organic and organo-mineral fertilizers - Determination of the mercury content
DIN EN 17770
Organic and organo-mineral fertilizers - Determination of total content of specific elements by ICP-AES after digestion by aqua regia
DIN EN 17771
Organic and organo-mineral fertilizers - Determination of the nitrogen content
DIN EN 17772
Organic and organo-mineral fertilizers - Determination of specific parameters
DIN EN 17773
Organic and organo-mineral fertilizers - Determination of the dry matter content
DIN EN 17774
Organic and organo-mineral fertilizers - Determination of the content of specific elements by ICP-AES after extraction by water and weak solvents
