an 82 sr / 82 rb generator column is made using a fluid impervious cylindrical container having a cover for closing the container in a fluid tight seal , and further having an inlet for connection of a conduit for delivering a fluid into the container and an outlet for connection of a conduit for conducting the fluid from the container . an ion exchange material fills the container , the ion exchange material being compacted within the container to a density that permits the ion exchange material to be eluted at a rate of at least 5 ml / min at a fluid pressure of 1 . 5 pounds per square inch . the generator column can be repeatedly recharged with 82 sr . the generator column is compatible with either three - dimensional or two - dimensional positron emission tomography systems .