Electrochemistry, Fuel Cell & Battery Research Test Solutions


2015 sees the launch of the EmStat3Blue, with integrated battery and Bluetooth, to the popular EmStat series.

The EmStat series are the smallest potentiostats available on the market. Despite their small size (from 6.7 x 5.0 x 2.8cm) and low cost, the EmStat series of potentiostats offers research grade capabilities.  The EmStat is now available in two versions; EmStat3 and EmStat3Blue. + models are also available.


The EmStat3Blue (new for 2015) has an integrated battery and Bluetooth module allowing for wire free interfacing with your PC or Android device.


The EmStat has eight current ranges from 1nA to 100mA (EmStat3+ and EmStat3+Blue models) full scale, with a minimum resolution of 1pA. The potentiostat is controlled and powered by USB, and on the Blue models there is the option of wireless over Bluetooth and powered from an internal battery. They provide the most relevant electroanalytical measurement techniques and are used with either PSTrace software (for PC), which is supplied with each EmStat instrument, or PSTouch (for Android devices) which can be downloaded free from the app store. Using the EmStat3 (non-Bluetooth version) with an Android device requires the Android device to have a USB host capability, contact us for more information.


The instrument is delivered with a cell cable ending in 2 mm banana connectors with mini crocodile clips for the working, reference and counter electrodes. The + (100mA) models also have a fourth sense connection. The EmStat3Blue(+) also has an integrated connection build-in for Screen Printed Electrodes (SPE).


EmStat3 is available as a single channel potentiostat, combined with a multiplexer, as a polypotentiostat and multichannel potentiostat.


EmStat supported techniques

Voltammetric techniques:

  • Linear Sweep Voltammetry (LSV)
  • Differential Pulse Voltammetry (DPV)
  • Square Wave Voltammetry (SWV)
  • Normal Pulse Voltammetry (NPV)
  • Cyclic Voltammetry (CV)

Technique as a function of time:

  • Amperometric Detection (AD) (Chronoamperometry)
  • Pulsed Amperometric Detection (PAD)
  • Multiple Pulse Amperometry (MPAD)
  • Open Circuit Potentiometry (OCP)
  • Multistep Amperometry (MA)


The EmStat3(+)Blue has an auxiliary port (pictured bottom left) that can be used with:

  • Pt1000 temperature sensor.
  • MUX8 and MUX16 multiplexers.
  • Magnetic stirrer for stripping analysis applications.
  • USB galvanic isolator for floating measurements.
  • Differential Electrometer Amplifier (DEA) for use as a floating voltage amplifier with differential input and single output for measuring an auxiliary signal between -5 to +5V or -10 to +10V.


EmStat(Blue) version: 3 3+
DC potential range ±3V ±4V
Compliance voltage ±5V ±8V
DC potential resolution 0.1mV 0.125mV
DC potential accuracy 0.2% 0.3%
Current ranges (no. of ranges) 1nA to 10mA (8) 1nA to 100mA (9)
Maximum current ±20mA typ & ±15mA min ±100mA typical

The current is measured using a Zero Resistance Ammeter (ZRA)

Current resolution 0.1% of current range, 1pA at lowest current range
Accuracy <=1% of current range a 1nA  <=0.5% at 10nA  <=0.2% at 100nA to 100µA  <=.5% at 1mA, 10mA and 100mA
Electrometer amplifier input >100GOhm // 4pF
Rise time Approx. 100µS
Housing Anodized Aluminium: EmStat3(+) 6.7 x 5.0 x 2.8cm. EmStat3(+)Blue 10 x 6.0 x 2.8cm.
Weight EmStat3(+) 85g. EmStat3(+)Blue 250g.
Power USB 5V, min 130mA (ES3) or 500mA (ES3+). EmStat3(+)Blue battery: >8 hours with cell off, >6 hours with continuous cell on 1µA current. Full charge takes approx. 3 hours.
Interface mini USB or Bluetooth (Blue models only)
External I/O options analogue: 1 input and 1 output channel (both 0V – 4.096V) digital: 4 in/output lines (maximum rating: -0.3V to 5.3V)