USB powered potentiostat with integrated multiplexer

  • potentiostat with integrated 8 channel multiplexer
  • potential range: ± 3V or ± 4V
  • compliance voltage: ± 5V or ± 8V
  • current ranges:  1 nA – 100 mA


The EmStat3MUX8-R2 can connect arrays or other setups made up of up to eight working electrodes in two or three electrode cell types. If you require more channels than available you can stack one or more MUX-R2 to the EmstatMUX8-R2 for a total of up to 128 channels.


The MUX8-R2 can sample different cells at a rate of 25ms/cell. Normally a method needs to be finished to switch the cell but with the fast sampling per cell it makes it possible to measure time depending techniques.  Using the PStrace for windows its possible to perform a different experiment on each of the channels sequentially.


Voltammetric Technqiues:
  • Linear Sweep Voltammetry (LSV)
  • Cyclic Voltammetry (CV)
Pulsed Techniques:
  • Differential Pulse Voltammetry (DPV)
  • Square Wave Voltammetry (SWV)
  • Normal Pulse Voltammetry (NPV)


Amperometric Techniques:
  • Chronoamperometry (CA)
  • Zero Resistance Amperometry (ZRA)
  • Chronocoulometry (CC)
  • MultiStep Amperometry (MA)
  • Pulsed Amperometric Detection (PAD)
  • Multiple-Pulse Amperometric Detection (MPAD)


Galvanostatic Techniques:
  • Open Circuit Potentiometry (OCP)


Cell Connections:

  • Option A: Double shielded sensor cables with 2 mm banana connectors. The 2 mm banana connectors are compatible with standard croc clips (they will be included in the quotation as optional).
  • Option B: High-density cable that terminates in ferrules
  • Option C: Connection (Screw) Terminal  to assemble your own wires.
  • Option D: Screen Printed Electrode Connector



Emstat Potentiostat Version33+
Dc-potential range± 3.000 V± 4.000 V
Compliance voltage± 5 V± 8 V
Dc-potential resolution0.1 mV0.125 mV
Dc-potential accuracy0.2 %0.3 %
Current ranges1 nA to 10 mA (8 ranges)1 nA to 100 mA (9 ranges)
Maximum current± 20 mA typical
and ± 15 mA minimum
± 100 mA typical



Potentiostat (controlled potential mode) 
Current accuracy? 1 %of current range at 1 nA
? 0.5 % at 10 nA
? 0.2 % at 100 nA to 100 uA
? 0.5 % at 1 mA, 10 mA and 100 mA
all with max. 0.2 % offset error
Measured current resolution0.1 % of current range


Electrometer amplifier input> 100 G? // 4 pF
Rise timeapprox. 100 us


Integrated MUX8-R2 Multiplexer 
Number of channels 8 (up to 128 when daisy chained)
Multiplexerswitches 8 x (WE, S, RE and CE)
On resistance for WE1.5 ohm typical
Charge injection on WE20 pC typical
Leakage current< 20 pA (5 pA typical) at 25 ºC
Switching time2 ms
Compliance voltage± 10 V


Other Information 
Housingaluminium: 138 mm x 121 mm x 37 mm
Weight+/- 500 g
Temperature range0 ºC to + 50 ºC
Power supplyUSB


PSTrace for Windows:
  • Scripting for running an automated sequence of measurements on different channels
  • Open your data in Origin and Excel with one click of a button
  • Save all available curves, measurement data and methods to a single file
  • Direct feedback on method parameters
PSTouch for Android:

PSTouch is an app that can be used with all Palmsens and Emstat Potentiostats. It directly connects to you potentiostat via a USB or through a wireless connection using the Palmsens Bluetooth dongle. This can be used on on either old or new Palmsens equipment.