The EmStat USB powered potentiostats are the smallest research grade electrochemical interfaces available on the market.
The devices are general purpose potentiostats but are also highly suitable for embedded use in applications.
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:
Rugged carrying case
High quality, double shielded cell cable with
2 mm banana connectors for Working, Counter, Reference, Sense (EmStat3+) and Ground
PSTrace software for Windows
Looking for small embedded potentiostat modules (System on Modules)?
The following techniques are supported by EmStat.
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:
Pulsed amperometric detection (PAD)
Multiple pulse amperometry (MPAD)
Open circuit potentiometry (OCP)
Multistep amperometry (MA)
± 3.000 V
± 4.000 V
± 5 V
± 8 V
≤ 0.2 %
with max. 2 mV offset error
≤ 0.3 %
with max. mV offset error
1 nA to 10 mA (8 ranges)
1 nA to 100 mA (9 ranges)
± 20 mA typical
and ± 15 mA minimum
± 100 mA typical
The current is measured using a zero resistance ammeter (ZRA).
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
approx. 100 μs
shielded cable with circular connector for
WE, RE, CE and Sense (EmStat3+ only)