A specific quantity of material produced in a process or series of processes so that it is expected to be homogeneous within specified limits. In the case of continuous production, a batch may correspond to a defined fraction of the production. The batch size can be defined either by a fixed quantity or by the amount produced in a fixed time interval. Batch Release.
Lyophilization (freeze-drying) is a standard process in the pharmaceutical industry to stabilize drug products, increasing stability and shelf life. The freeze drying removes water after having frozen the product.