[en] With the use of an 80 MeV isochronous cyclotron, a preparation procedure for ¹²³I is outlined. The nuclear reaction applied in the process is; ¹²⁷I(p,5n)¹²³Xe yields (in β⁺,EC)¹²³I. A liquid target is irradiated and a continuous gas-liquid extraction of parent ¹²³Xe is performed. After a short growth time the daughter ¹²³I is dissolved and treated for various applications. The radionuclidic purity is very high, only ¹²⁵I is detectable with a maximum of 0.2% to the end of the preparation process. In this production of carrier-free ¹²³Xe and ¹²³I, the major chemical problem consists of a separation into microquantities. Attempts to find a solution to various technical problems are also described. Despite the limitations the purity of the final product and the simplicity of the method permit to envisage a regular exploitation of the process in order to put ¹²³I at the disposal of the users in a geographic zone, which is only limited by the distribution possibilities. (T.G.)