| http://www.w3.org/ns/prov#value | - A further aspect of the present invention is a kit, which comprises a scaffold as defined by the general formula (I) above, which kit comprises said scaffold in a solid state together with instructions, preferably written, for use thereof in the manufacture of metal chelating affinity ligands or a separation medium comprising polydentate metal chelating affinity ligands coupled to a base matrix.
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