GX104 is the high resolution and high current member of the GX100 Super-compact Series devices with Bi-potentiostat capability. GX104 performs very similar to GX103 for Amperometric and Voltammetric DC electrochemical protocols but does not support Open Circuit Potential measurements. GX103 does not support Electrochemical Impedance Spectroscopy but has the Bi-potentiostat capability that allows to use with four electrode cells (WE1/WE2/RE/CE), as well as three electrode (WE/RE/CE) and two electrode (WE/RE-CE) setups.