A modified Simons' reactor system has been developed for electrochemical fluorination processes. This reactor employs batch mixer design criteria to enhance and enable the characterization of the mass transfer in the reactor. Four monopolar packs of electrodes, each comprised of two nickel anodes sandwiched between three nickel cathodes, were used. A more uniform anodic current density distribution was achieved and the electrode packs were oriented to serve as baffles for the mixed flow field. A custom designed and fabricated, Motorola 6800 based, microprocessor system in conjunction with an IBM Personal Computer and other accessories are employed for data acquisition, monitoring and control of the process. The uniqueness of the design and operational characteristics of this microprocessor-aided modified Simons' Reactor System will be discussed.