The PET Dispensing Pig provides a full 3.5 cm of solid tungsten to safely shield high energy PET radiopharmaceuticals . Designed to accommodate 30ml vials (adapters are available for smaller vials).The threaded lid attaches to the body of the pig so that no radiation "shine through" occurs .The tungsten stopper, with attached pull ring ,is held in place magnetically. The handle permits the pig to be easily carried as a transport container as well as a dispensing pig. Weight 43 lbs.