RT Journal Article SR Electronic T1 Comparative Methods for Integrity Testing of Vials Sealed at Reduced Pressures for Lyophiles JF PDA Journal of Pharmaceutical Science and Technology JO PDA J Pharm Sci Technol FD Parenteral Drug Association (PDA) SP 31 OP 39 VO 53 IS 1 A1 Lori A. Daukas A1 Edward H. Trappler YR 1999 UL http://journal.pda.org/content/53/1/31.abstract AB