1. Indirect Heating Media The heating / cooling fluid is never in contact with the product to be processed: the heat exchange takes place through the product contact surfaces only	2. Vacuum Most of the products to be processed are thermosensitive requiring low drying temperatures
3. Batch Processing Discontinuous processing per the general manufacturing practice in the pharmaceutical industry.	4. Agitators The agitator design is matched to each machine type to assure intensive mixing as well as good discharging characteristics.
Horizontal Shape: Horizontal paddle dryers provide for fixed geometry for the whole drying process; the agitator is always in the product. Pharmadry® - Termomix®	Vertìcal Shape: Filters, filter/dryers and agitated vacuum pan dryers provide for variable geometry for the drying process; the agitator can be raised and lowered within the product mass to rotate at different levels. Turbodry®  -  Pressofiltro®