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EmStat3 Module

for OEM

The EmStat3 module is a research grade potentiostat that was developed for OEM purposes. The EmStat3 is a reliable and versatile potentiostat that found its way to the market in many  different forms. 

All specifications
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The EmStat3 module is successfully integrated in devices for specific applications, but also in our own product range that we sell for generic research purposes such as the EmStat Blue and MultiEmStat.


Voltammetric techniques

  • Linear Sweep Voltammetry (LSV)
  • Cyclic Voltammetry (CV)

Pulsed techniques

  • Differential Pulse Voltammetry (DPV)
  • Square Wave Voltammetry (SWV)
  • Normal Pulse Voltammetry (NPV)

These methods can all be used in their stripping modes which are applied for (ultra-) trace analysis.

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)



The EmStat module features:

  • 9 embedded common electrochemical techniques
  • options for manual cell control (potentials, changing current range and timing)
  • USB and serial communication or USB as Virtual COM port
  • automatic current ranging
  • digital I/O for peripheral control (stirrer or valve)
  • analog input for measuring auxiliary input like temperature
  • analog output for controlling peripherals like a stirrer
  • multiplexer control
EmStat version: 3 3+
dc-potential range ± 3.000 V ± 4.000 V
compliance voltage ± 5 V ± 8 V
dc-potential resolution 0.1 mV 0.125 mV
dc-potential accuracy 0.2 % 0.3 %
current ranges 1 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

The current is measured using a zero resistance ammeter (ZRA).

current resolution 0.1% of current range, 1 pA at lowest current range
current accuracy (deviation) ≤ 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
all with max. 0.2 % offset error
electrometer amplifier input       > 100 Gohm // 4 pF
rise time     approx. 100 μs
power ES3: 5V, max. 130 mA
ES3+: 5V, max. 500 mA
external I/O options analog: 1 input and 1 output
both 0 V- 4.096 V
digital: 4 in/output lines
max. rating: -0.3 V to 5.3 V
PCB dimensions ES3: 51.5 x 34 mm
ES3+: 55 x 41 mm


The EmStat module can be used with our PSTrace software for Windows. This allows you to evaluate its capabilities before starting your development project.

Software can be developed in any language or for any platform by means of the EmStat Communication protocol. A C library which implements the EmStat Communication protocol is also available. Other available code example and libraries include:


The MUX8 multiplexer is meant for use with 2- or 3- electrode sensors or cells up to 8 channels. The MUX8 module allows to switch:

  • 8x WE, 8x RE, 8x CE
  • 8x WE, 8x RE+CE joint together
  • 8x WE with fixed RE and CE

The MUX8 can be mounted directly to the EmStat3 potentiostat module as shown below. Or it can be connected via short wires or flat cable. 


The MUX8 module can be mounted directly on the EmStat Development board. Connections to  different cells can be made using the screw terminals on the development board. The available libraries for software development are also made compatible with the MUX8 module.


It is not possible to apply a potential simultaneously to more than one sensor or cell each with three electrodes. This requires a multi-channel potentiostat, having one potentiostat for each channel. Virtual simultaneous measurements (by means of fast switching, but maintaining potentials) using a multiplexer are possible with two electrode sensors or cells, so when combined counter and reference electrodes are applied.

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Name Type Last updated
EmStat3 module dimensions Drawing with dimensions of EmStat3 PCB (PDF) 11-08-20
EmStat3 3D Model A STEP file of the EmStat3 model11-08-20
Embedded SDK for EmStat3 An example project of how to use the SDK is provided for Arduino. It's made in "Arduino Software (IDE)" found at "". For more information about the example, read the comments in "EmStatSDKExample.ino". A short explanation with an example of how to use the SDK in any c/c++ environment can be found in PSComm.h. The Arduino example should also be easy to port to C or C++, if required. For more advanced use beyond the scope of the SDK, refer to the "EmStat communication protocol##.pdf".09-04-20
App Note – Bluetooth module for EmStat3 OEM Describes how to use the Bluetooth module for EmStat3 OEM09-04-20
EmStat3 module description EmStat3 module description09-04-20
EmStat3 series description 08-04-20

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