A description is given of the extractability of a large number of metal ions in the form of carbamidates from nitrate solutions, the reextractability of chelates dissolved in chloroform by various reagents and a few possibilities of separating metal ions by alternating extraction and reextraction. For extraction, a 1% solution of DDDC in chloroform, and for reextraction, acid, basic, cyanic, sulphide, fluoride, iodide, tartrate, komplexon and other solutions have been used. Distribution ratios for a large number of systems are given, and possibilities of separating a number of metal ions are described.