The Laboratory is a facility of the department of forest botany and tree physiology at the University of Göttingen. It allows users to work with radioactive material under the handling permission for radioactive material. Legal regulations regarding the handling of radioisotopes are observed by the LARI. The LARI offers as a service the measurement of samples for radioactivity. Thereby support is given by LARI staff with measurement instruments with radioactive sources and for radioactive substances. Further duties are the development of new methods for the application of radioisotopes as well as the development of environmental friendly replacement methods. The LARI with its staff are accredited as authorized experts under § 66 in Niedersachsen. The LARI conducts courses on the handling of radioisotopes. Staff participate in the technical instruction training of radiation protection at the University of Göttingen. The LARI has laboratory rooms and a measurement room in building Büsgenweg 2 as well as laboratory space for plant cultivation and fumigation at Burckhardtweg 2. The rooms at Büsgenweg have been refurbished in 2002 and are in excellent condition, the rooms at Burckhardtweg 2 were refurbished in 2005. All rooms are part of a handling permit for open source radioactive material from 2007. They conform to the current requirements in these area. The Handling Permit is not nuclide specific and allows handling of all radioactive materials within the threshold of Aktivitätsklasse SK2, furthermore the permission is not time limited. The total area of the Laboratories and measurement rooms inclusive of the airlock system are 336,05 m².