The EmStat Pico is a joint development by PalmSens BV and Analog Devices Inc. PalmSens is known for introducing the first commercially available handheld potentiostat. Over the last decade these have evolved to become smaller and more versatile. Together with Analog Devices, PalmSens now proudly presents the world smallest potentiostat module available on the market.

The EmStat Pico module supports the following techniques:

Voltammetric techniques

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

The above techniques can also be used for stripping voltammetry

Techniques as a function of time

  • Chronoamperometry (CA)
  • Open Circuit Potentiometry (OCP)
  • Electrochemical Impedance Spectroscopy (EIS)

The EmStat Pico potentiostat module works with the new MethodSCRIPTTM scripting language. This language allows developers to program a human-readable script directly into the Pico module by means of a serial (TTL) connection. The simple script language allows for running electrochemical techniques supported by EmStat Pico and makes it easy to combine different measurements and other tasks.

More script features include:

  • Use of variables
  • (Nested) loops
  • Logging results to an SD card
  • Digital I/O for example for waiting for an external trigger
  • Reading auxiliary values like pH or temperature
  • Going to sleep or hibernate mode

The EmStat Pico Development board allows to run your experiments conveniently in our PSTrace software for electrochemistry. PSTrace enables you to find the optimal settings for your experiment and allows you to extract the generated script for the EmStat Pico. This script can be transferred directly into your (embedded) code for controlling the EmStat Pico.

Main Specifications

General 
Full dc-potential range -1.7 to +2 V [1]
Dynamic dc-potential range 2.6 V [2]
Compliance voltage -1.7 to +2 V [3]
Maximum current ± 3 mA
Max. acquisition rate  1000 datapoints/s
Potentiostat (controlled potential mode)
Channels 2 (2x WE, 2x RE and 2x CE)
Applied dc-potential resolution 280 µV [4]
Current ranges 100 nA to 5 mA [5]
Measured current resolution 0.006% of selected current range
(5.5 pA on 100 nA range)
FRA / EIS (impedance measurements)       
Frequency range 0.016 Hz to 200 kHz
Ac-amplitude range 1 mV to 0.25 V rms, or 0.573 V p-p
Electrometer
Electrometer amplifier input > 1 TΩ // 10 pF
Bandwidth  250 kHz
Other
Dimensions 30.5 mm X 18 mm X 2.6 mm

[1] The full dc-potential range depends on use of High Speed or Low Speed mode.
[2] The dynamic range is the range that can be covered during a single scan within the full potential range. For example; a linear scan can start at -1.5 V and end at 1.1 V or vice versa, covering 2.6 V dynamic range.
[3] The compliance voltage is the maximum potential between Working and Counter electrode and depends on the selected mode.
[4] The applied dc-resolution is 1 mV in Low Speed mode and 280 µV in High Speed mode.
[5] Current ranges are divided over 12 ranges for Low Speed mode and over 10 ranges for High Speed mode. 

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