In the cleanroom of the Lactosan Pharma plant a qualified freeze-drying plant with 60 l ice capacity is located. It features separate chambers for the product and ice condensers, adjustable standing surfaces and a closing mechanism for vials. The control and documentation takes place via a process control system.

The process takes 3 - 5 days depending on the formulation. The residual moisture content in the powder can be lowered to < 3%. The class D cleanroom is equipped with an air-drying system, which constantly control the air moisture and temperature to keep the produced powder dry.