Handling of open radioactive emitters is only allowed inside the rooms of the isotope laboratory at Oldenburg University. Therefore, it can be used by all affiliates of the university. There are several laboratories for nuclide-specific work. All labs are equipped in accordance with the provisions of the radiation protection ordinance and additionally contain basic equipment for biochemical, molecular biological as well as production-biological applications. As yet, handling authorisations for 64 different nuclides have been obtained. The isotope laboratory is designed as a control area. The user service includes metrological and safety-related mentoring, controlling of human and environmental contamination and also the regular disposal of waste.