The Ivium Technologies  HiMUX.XR multiplexer can work individual cells with 2, 3 and 4 electrodes and a WE2 (BipotentioStat, optional). It has 8 channels and multiplexer units can be stacked so that up to 64 channels can be controlled sequentially by a single potentiostat.

• 8 independent channels per module: WE, CE, RE, S, WE2, GND
• Each channel with its own electrometer; compliance ±5A and ±20V
• Stackable up to 8 modules with a total of 64 channels

The HiMUX.XR is priced slightly higher than the uMUX but it has the advantage of an electrometer on each channel and faster channel switching. Automatic channel selection is integrated in the software.