Separation procedures based on chelate extraction are described, which can be used in the course of production of carrier-free
nuclides. The selectivities of the separations dealt with are fairly high, while the overall yield depends on the experimental
conditions, primarily on whether the micro- or the macrocomponent of the system can be chelated. The problems encountered
in the production of carrier-free64Cu,67Cu,84Rb and111Ag are briefly discussed.