The EmStat3 is a research grade potentiostat that was initially developed for OEM purposes. The EmStat3 is a reliable and versatile potentiostat that found it’s way to the market in many different forms.
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, EmStat Go and MultiEmStat.
The following techniques are supported by the EmStat module:
- Linear Sweep Voltammetry (LSV)
- Differential Pulse Voltammetry (DPV)
- Square Wave Voltammetry (SWV)
- Normal Pulse Voltammetry (NPV)
- Cyclic Voltammetry (CV)
These methods can all be used in their stripping modes which are applied for (ultra-) trace analysis.
Techniques as a function of time:
- Chronoamperometry (CA)
- Pulsed Amperometric Detection (PAD)
- Multiple Pulse Amperometry (MPAD)
- Open Circuit Potentiometry (OCP)
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:
- .NET (WinForms and UWP)
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
EmStat3 and EmStat3+ are also available as stand-alone instrument for research or OEM evaluation.
|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
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The MUX8 module is an 8 channel multiplexer extension for use with the EmStat3 potentiostat module.
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 flatcable.
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.