Product Description

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 EmStat:

  • high quality, double shielded cell cable
  • 2 mm banana connectors for working, counter, reference electrode and ground
  • mini-crocodile clips
  • USB cable
  • software

Sensor cable with croc clips

Techniques

The following techniques are supported by EmStat.

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)

Specifications

EmStat (Blue) 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 and 100 mA
all with max. 0.2 % offset error
electrometer amplifier input       > 100 Gohm // 4 pF
rise time     approx. 100 μs
sensor connection shielded cable with circular connector for
WE, RE, CE and Sense (EmStat3+ only)

EmStat regular model

housing anodized aluminium: 6.7 x 5.0 x 2.8 cm
weight 85 g
power supply USB
5 V, min. 130 mA (ES3) or 500 mA (ES3+)
communication mini USB
auxiliary port present no

 

EmStat Standard vs EmStat Blue

EmStat Standard Blue
size 6.7 x 5.0 x 2.8 cm 10.0 x 6.0 x 3.4 cm
weight 85 g 250 g
battery no yes
communication USB USB + Bluetooth
auxiliary port no yes
sensor connector LEMO LEMO + SPE

Software

All our single channel instruments are shipped with PSTrace  for Windows. PSTrace is also available in our download section.

For controlling EmStat using a phone or tablet download PStouch for Android. It is available for free in the Google Play store.

EmStat

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