The CURIEMENTOR 3 isotope calibrator enables users to measure activity of radioactive isotopes as used for all medical applications in diagnostic and therapeutic nuclear medicine and in intravascular brachytherapy. Great importance has been attached to the design of the instrument to focus on the needs of operators. The display and keyboard panel with its flat keys are specially designed for intuitive handling and easy cleaning in case of contamination. The measuring results can either be displayed in Bq, Ci or in A.