Radionuclide generator systems can routinely provide radionuclides on demand such as 68 Ga produced by a 68 Ge/ 68 Ga generator without the availability of an on-site accelerator or a research reactor. thus, in this work nano-Sno 2 was used to develop a new 68 Ge/ 68 Ga generator which was evaluated over a period of 17 months and 305 elution cycles. The elution yield was 91.1 ± 1.8% in the first 7 mL (1 M HCl as eluent) when the generator was new and then it decreased with time and use to 73.8 ± 1.9%. Around 80% of the elutable 68 Ga activity was obtained in 1 mL and the 68 Ge content in the eluate did not exceed 1 × 10-4 % over the investigation period when it was eluted regularly. The described generator provided adequate results for radiolabelling of DotA-toc with direct use of eluate. in addition, [ 68 Ga] Ga-DotA-toc was tested satisfactorily for in vivo tumor detection by micropet/ct imaging in a lung cancer mouse model.