PT - JOURNAL ARTICLE AU - John Welch TI - Vacuum Measurement in Steam Sterilizable Lyophilizers DP - 1993 Jan 01 TA - PDA Journal of Pharmaceutical Science and Technology PG - 29--34 VI - 47 IP - 1 4099 - http://journal.pda.org/content/47/1/29.short 4100 - http://journal.pda.org/content/47/1/29.full SO - PDA J Pharm Sci Technol1993 Jan 01; 47 AB - This paper discusses the performance and sterilizability attributes of several different types of capacitance manometers as used in steam sterilizable lyophilizers. Recommendations are made for proper capacitance manometer selection, installation, operation, and calibration. An overview of vacuum gauging methods and the performance and sterility benefits of a new high-temperature (125° C) / high-overpressure capacitance manometer are discussed.