A significant comparison between collapse and glass transition temperatures
29 September 2008 | By Eva Meister and Dr. Henning Gieseler, Division of Pharmaceutics, University of Erlangen-Nuremberg
Rational freeze-drying process design is based on a representative and accurate measurement of the critical formulation temperature. To avoid product shrinkage or collapse, it is indispensable to control the product temperature just below this key temperature during primary drying. Over the last decades, DSC was routinely used to determine the…