A system using a radioisotope concentrator device comprising a body having at least one injection port and at least one valve being configurable between a first open configuration for allowing fluid communication between the at least one injection port and the concentrator column and a second open configuration to prevent fluid communication between the at least one injection port and the concentrator column in use, the system further comprising an injection device comprising an eluent for eluting through the concentrator column via the at least one injection port when the at least one valve of the radioisotope concentrator device is in a selected open configuration in use.