• Small research grade potentiostat
  • Potential range ±5V or ±8V (3+)
  • Current ranges 1 nA to 10 mA or 100 mA (3+)
  • USB powered


All specifications
PalmSens usually responds to your quotation request within one business day.


EmStat is a small and low cost potentiostat with research grade capabilities. It has eight current ranges from 1 nA to 100 mA (EmStat3+) full scale, with a minimum resolution of 1 pA. It provides the most relevant electroanalytical measurement techniques. Its price makes it a popular choice for educational purposes.

Standard included with an EmStat3/3+:

  • Rugged carrying case
  • High quality, double shielded cell cable with
    2 mm banana connectors for Working, Counter, Reference, Sense (EmStat3+) and Ground
  • Crocodile clips
  • Dummy cell
  • USB cable
  • PSTrace software for Windows

Sensor cable with croc clips

Potentiostat module for OEM

Looking for small embeddedable potentiostat modules? 
See: embed.palmsens.com


The following techniques are supported by EmStat3/3+.

Voltammetric techniques:

  • 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)
  • Multistep amperometry (MA)


EmStat version:33+
dc-potential range± 3.000 V± 4.000 V
compliance voltage± 5 V± 8 V
dc-potential resolution0.1 mV0.125 mV
potential accuracy
≤ 0.2 %
with max. 2 mV offset error
≤ 0.3 %
with max.  mV offset error
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

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

current resolution0.1 % 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 and 100 mA
all with max. 0.2 % offset error
electrometer amplifier input      > 100 Gohm // 4 pF
rise time    approx. 100 μs
sensor connectionshielded cable with circular connector for
WE, RE, CE and Sense (EmStat3+ only)
housinganodized aluminium: 6.7 x 5.0 x 2.8 cm
weight85 g
power supplyUSB
5 V, min. 130 mA (ES3) or 500 mA (ES3+)
communicationmini USB
auxiliary port presentno

 EmStat3 vs EmStat3 Blue

size6.7 x 5.0 x 2.8 cm10.0 x 6.0 x 3.4 cm
weight85 g250 g
communicationUSBUSB + Bluetooth
auxiliary portnoyes
sensor connectorLEMOLEMO + SPE


For Windows and Android

PSTrace for Windows

PSTrace for Windows provides support for all techniques and device functionalities. With a smooth simple interface, showing only the applicable controls, PSTrace is suitable for all levels of user experience. Functions include:

  • Equivalent Circuit Fitting
  • Scripting for running an automated sequence of measurements
  • 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
  • Browse measurements on PalmSens4’s internal storage
  • Direct feedback on method parameters

Dowload PSTrace on my.palmsens.com

PStouch app for Android

PStouch is an app for Android devices that can be used with all PalmSens and EmStat potentiostats. PStouch communicates with your potentiostat directly via USB or wirelessly using the PalmSens Bluetooth dongle. A Bluetooth dongle is available for your older and your newest PalmSens.


Get PStouch from the Google Play Store: