Glatt developed ProCell, a laboratory unit using the spouted bed technology. Within ProCell particles are fluidized without a bottom screen and directed to the spraying nozzle. By this means it is possible to work with very low product temperatures and little material in the processing chamber. Hence temperature sensitive materials are treated very gently. Proteins, enzymes and micro-organisms have been dried in the ProCell with very little loss of activity. The processing air velocity declines rapidly in the processing chamber of the ProCell, allowing the production of very fine particles. On the other side large particles, like catalyst carrier rings can be fluidized without using prohibitive quantities of processing air. The high air velocities in the slot ensure a very robust process, especially when coating sticky materials. Lumps that may have formed are still moved, broken down again and carried out of the processing chamber. Spray granulation, agglomeration and coating can be accomplished using the spouted bed technology of the ProCell. Using different processing chamber inserts the ProCell 5 also allows the evaluation of fluid bed processes.
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