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2nd Freeze-Drying Technology Online Summit- final brochure.pdf (964.86 kB)
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Smith G (2021) Volanthen 2nd Freeze-Drying Technology Summit Feb 17th-18th.pdf (3.21 MB)
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Applications for Electrical Impedance Spectroscopy Process Analytical Technology (EIS-PAT) in Lyophilization Process Development. On-line presentation at Volanthen's 2nd Freeze-Drying Technology Summit February 17th-18th 2021
cite as :
Smith, G. (2021) Applications for Electrical Impedance Spectroscopy Process Analytical Technology (EIS-PAT) in Lyophilization Process Development. On-line presentation at Volanthen's 2nd Freeze-Drying Technology Summit February 17th-18th 2021
Topics covered by this talk:
- Electrical impedance and material attributes
- Non-invasive measurements (in process and for individual vials)
- Measurement frequency selection for ice fraction and unfrozen fraction
- Dielectric relaxation of ice : quantification of ice mass and calibration for ice temperature
- High frequency capacitance – a marker for the in-vial glass transition and other phase changes
