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A potentiostat is an essential piece of analytical equipment for studyingelectrochemical devices and reactions. As the design of electrochemical devicesevolve applications for systems with multiple working electrodes have becomemore common. These applications drive a need for low-cost multi-channelpotentiostat systems. We have developed a portable low-cost scalable systemwith a modular design that can support 8 to 64 channels at a cost as low as \$8per channel. This design can replace the functionality of commercialpotentiostats which cost upwards of \$10k for certain applications. Eachchannel in the multi-channel potentiostat has an independent adjustable voltagesource with a built-in ammeter and switch, making the device flexible forvarious configurations. The multi-channel potentiostat is designed for lowcurrent applications (nA range), but its purpose can change by varying itsshunt resistor value. The system can either function as a standalone device orremotely controlled. We demonstrate the functionality of this system for thecontrol of a 24-channel bioelectronic ion pump for open- and closed- loopcontrol of pH.

plos one

The multi-channel potentiostat: Development and Evaluation of a Scalable  Mini-Potentiostat array for investigating electrochemical reaction mechanisms