interchanged with one or more of other similar suitable components known in the art and changed in minor non functional respects these additional embodiments of the invention are also regarded as failing within the scope of the claims herein the examples detailed below are provided to better describe and more specifically set forth the elements and mechanics operation of the present invention with reference to the drawing but for obvious reasons cannot describe all of them it is to be recognized that the examples therefore are for illustrative purposes only however and should not be interpreted as limiting the spirit and scope of the invention as later recited by the claims that follow table 1 below shows results of drying experiments which are based on a conventional method for termination of drying the termination of drying was determined by the empirical formula drying time h load kg u00b7 0 7 the experiments were carried out using a centrifugal dryer unit tzt u2212 s from fima with the following equipment features sterile design fully automated cleaning in place cip sanitizing in place sip drying gas transported in open loop explosion protection by ensuring an inert atmosphere in the drying compartment maximum excess pressure during operation 3 bar before the final drying step in the fluidized bed drying the following process steps were carried out transfer of an insulin crystal suspension by means of excess nitrogen pressure from the crystallization container to the drum filter surface of the centrifugal dryer washing of the insulin filter cake passage of nitrogen through the insulin filter cake during fixed bed drying blowing off the insulin filter cake with the aid of a blow off nozzle beginning of the fluidized bed drying.