Hi Simon, we had something similar at the Christie some years ago where a patient had a radioactive dose (canโt remember what of at the moment) but I do remember the nurse had to dialysis while stood behind a lead screen on wheels! We set up the machine in a side room of the cancer centre with the drain going down a toilet via a bespoke connection into the pan that fitted under the toilet seat. The half life of whatever was used sounds similar to your situation . We just collected the machine some days later. The cancer specialists were able to guide us on the safe time to leave the machine before handling it again. To be honest there were no dramas and it was an uneventful experience. ๐๐ป
Ian Wilde