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Research ArticleTech Report

Detection of Silicone Oil Leakages in Freeze Dryers

U. Meissner, Harald Stahl and D. Steinkellner
PDA Journal of Pharmaceutical Science and Technology September 2011, 65 (5) 481-485; DOI: https://doi.org/10.5731/pdajpst.2011.00748
U. Meissner
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Harald Stahl
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  • For correspondence: harald.stahl@geagroup.com
D. Steinkellner
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Abstract

As a small leakage from the silicone oil tubes in pharmaceutical freeze dryers may go undetected for several cycles, it provides a major threat to both product safety and the economic performance of such installations. A properly mounted mass spectrometer offers a non-invasive method of detecting the smallest amounts of silicone oil down to 1 ppm. Additionally the system will improve leak testing procedures and can also be used as a process analytical technology tool to improve process control.

LAY ABSTRACT: Drugs, and in particular parenterals, need to have a very high level of purity. A production process such as freeze drying carries the inherent risk of contamination by process fluids. This should not happen during routine production, but in the event of a malfunction small amounts of these fluids may contaminate the drug product. The purpose of this paper is to introduce a method which is able to detect such malfunctions before they can develop into a risk for drug purity and ultimately patient safety.

  • Freeze drying
  • Leak detection
  • Lyophilisation
  • Mass spectroscopy
  • Silicone oil
  • © PDA, Inc. 2011
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PDA Journal of Pharmaceutical Science and Technology: 65 (5)
PDA Journal of Pharmaceutical Science and Technology
Vol. 65, Issue 5
September/October 2011
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Detection of Silicone Oil Leakages in Freeze Dryers
U. Meissner, Harald Stahl, D. Steinkellner
PDA Journal of Pharmaceutical Science and Technology Sep 2011, 65 (5) 481-485; DOI: 10.5731/pdajpst.2011.00748

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Detection of Silicone Oil Leakages in Freeze Dryers
U. Meissner, Harald Stahl, D. Steinkellner
PDA Journal of Pharmaceutical Science and Technology Sep 2011, 65 (5) 481-485; DOI: 10.5731/pdajpst.2011.00748
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  • Article
    • Abstract
    • Introduction
    • Feasibility Trials: The Detection of Silicone Oil Traces
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