FIELD: isotope separation techniques. SUBSTANCE: invention is intended for preparing radiopharmaceutical medicinal preparations and focuses on developing high- efficiency small-size extraction generator for technetium 99m with autonomous portable extractor allowing running installation in radiological laboratories not provided with protection equipment. Invention aims at enabling self-regulation of location of aqueous/organic phase interface in extractant discharge extractor region thereby enabling operation of installation in "black box" mode, that is in closed form characterized by minimal loss of extracted radionuclide. This task is solved by manufacturing extractor column with holes in its lower section and placing this column coaxially in sealed cylindrical casing with two connection pipes for connecting to air-vacuum control system and for withdrawal of exhausted molybdenum 99, admission pipe being connected over single-pass cock with filtration column and extractant tank. Such structure of extractor permits placing it into protecting container with communication holes, which is suitable for repeated extraction in small-size extractor due to its coaxial arrangement and lack of liquid communications between column and internal section functioning as supplementary extractor. EFFECT: increased productivity of installation. 2 cl, 1 dwg
