A BiPotentiostat is a specialized type of potentiostat capable of controlling the potential of two separate working electrodes independently.
In simpler terms, it's a single instrument that does the job of two potentiostats, but it's specifically designed for an electrochemical cell with a special configuration: one counter electrode, one reference electrode, and two working electrodes. See below connection figure of the RRDE test using a bipotentiostat +RRDE rotator equipment.
CorrTest bipotentiostat is compatible with RRDE rotator of any brand.
A bipotentiostat can work with Devanathan-Stachurski cell(H-cells) for hydrogen permeation test.
CorrTest bipotentiostat can not only do the RRDE and hydrogen permeation test, it can also connect to 2 independent electrochemical cells, and do any experiment on each channel as you want. CS2350M is the real dual channel potentiostat.