• Publication Date: 02/01/2009
  • Author(s):
    Copley, Mark McDonald, John
  • Article Type: Technical Articles
  • Subjects: Instruments, Particle Characterization
The importance of controlling air flow for accurate cascade impaction inhaler product testing.

Understanding how volumetric air flow affects the results of cascade impactor tests, and more importantly, how to measure and control flow rate accurately, requires some knowledge of flow meter technology, including calibration and the appropriate application of correction factors, as well as an understanding of the issues involved in the set-up of test equipment.

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