A global pharmaceutical entity was comparing vials for helium leak testing services. The vials were of the same size; however, one was of glass composition and the other was a thermoplastic material. Each contained the same neck finish to accommodate a press-fit integral crimp/stopper component. They were interested to see how various temperature storage conditions might affect their helium leak rates. Learn about the results obtained from collecting and tabulating the helium leak rate data from each of the temperature storage conditions along with the solution.