Electrochemical interface for sensorarrays
The EmStat board can be extended with the 16-channel Mux multiplexer. This multiplexer can be used with up to 16 working electrodes all sharing the same reference and counter electrode
It is also possible to use the CH8 multiplexer.
Mux multiplexer
The Mux multiplexer is connected to up to 16 working electrodes, all sharing the same reference and counter electrode. The device can apply the potential to the selected WE only and leaving the other WE at open circuit, or to all WE's simultaneously.
The multiplexer is supported by the PSTrace program and provides the possibility to select a channel and to start a measurement using the selected channel. Amperometric detection supports the multiplexer by providing two options:
- Measuring current as a function of time of each channel consecutively,
- Scanning the channels continuously each time the interval time has elapsed, with a maximum rate of 3 scans per second.
The program PSTrace allows to use the multichannel potentiostat for amperometric detection but also for cyclic and linear sweep voltammetry as well as differential pulse and square wave voltammetry.