The Model 501 programmable fluidized bed (FB) dryer is a convenient laboratory-scale unit for rapid moisture reduction or removal at relatively low temperatures. Multiple configurations and microprocessor control ensure flexibility over a wide range of applications. The dryer delivers a high air flowrate, breaking up wet samples and ensuring vigorous mixing, so that drying is both fast and uniform, with no lumps or caking of the particles. Control of the airflow, inlet air temperature and drying period and a temperature/humidity probe within the tub assembly, enable all stages of the drying process to be programmed, monitored and analyzed. The system handles a maximum sample capacity of 5 kg. — Sherwood Scientific Ltd., Cambridge, U.K.