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

Ivium Technologies can offer 2 types of multiplexers:
 
 
HiMUX.XR:

uMUX:

Each channel with its own electrometer; compliance ±5A and ±20V

Each channel switches with relays; can be used with any Ivium potentiostat

 
HiMUX.XR

8 independent channels per module:
– WE, CE, RE, S, WE2, GND
Stackable up to 8 modules with a total of 64 channels

                                                   
 

Technical specifications:

 

● Fast channel switching: Because no switches are connected to RE&S, there are no (dis-)charge currents when channels are switched. High impedance (reference-) electrodes require a long stabilization time after each switch. The HiMUX keeps RE&S always connected, and allows for fast channel switches without disturbing the electrochemical cells.

 

● Excellent high frequency performance: the design with independent active
electrometers allows the whole RE/S cable-length to be enclosed within driven shields. This results in a very low leakage capacitance, and measurements can be done in the high frequency range without performance loss compared to the un-multiplexed situation.

 

Each Electrometer:

 
 

♦ Input impedance: >1000 Gohm//<8 pF

♦ Bandwidth >16 MHz

 
● Maximum compliance WE & CE: 5A

 
● Automatic channel selection is integrated in the software.

 
uMUX

8 independent channels per module:
– WE, CE, RE, S, WE2, GND
Stackable up to 8 modules with a total of 64 channels

In the uMUX each channel switches with relays and can be used with any Ivium potentiostat, including the 50V and 100V versions. The uMUX has the advantage of a lower price than the HiMUX.XR. Automatic channel selection is integrated in the software.

 

Compatibility with Ivium instrumens