EmStat – Single Channel
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 and is used with the PSTrace software or with PStouch for Android.
The potentiostat comes in two versions; EmStat and EmStat Blue. The differences are shown in the table below:
| EmStat | EmStat Blue | |
| Size | 6.7 x 5.0 x 2.8 cm | 10.0 x 6.0 x 3.4 cm |
| Weight | no | yes |
| Communication | USB | USB + Bluetooth |
| Auxiliary port | no | yes |
| Sensor connector | LEMO | LEMO + SPE |
Connecting your sensor or cell
EmStat comes standard with a cable with 2 mm banana connectors, with mini crocodile clips for the working, reference and counter electrodes. The EmStat Blue has a built-in connector for Screen Printed Electrodes (SPE).
Techniques
All supported techniques for EmStat:
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)
- Chronocoulometry (CC)
- Pulsed amperometric detection (PAD)
- Multiple pulse amperometry (MPAD)
- Open circuit potentiometry (OCP)
- Multistep amperometry (MA)
Specifications
The current is measured using a zero resistance ammeter (ZRA).
| 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 |
| 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 3 and 3+ 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 3 and 3+ Blue model:
| Housing | anodized aluminium: 10 x 6.0 x 2.8 cm |
| Weight | 250 g |
| Power supply | USB 5 V, min. 130 mA (ES3) or 500 mA (ES3+) |
| Battery time | > 8 hours with cell off > 6 hours with continuous cell on 1 uA current full charge takes approx. 3 hours |
| Communication | mini USB or Bluetooth |
| Auxiliary port present | yes |
| External I/O options | analog: 1 input 1 output channel (both 0 V - 4.096 V) digital: 1 input, 4 output lines (maximum rating: -0.3 V to 5.3 V) |
Ordering information
| PALM-ES3 | PalmSens Emstat3 Potentiostat |
| PALM-ES3+ | PalmSens Emstat3+ Potentiostat |
| PALM-ES3BLUE | PalmSens Emstat3 Potentiostat with Bluetooth |
| PALM-ES3+-BLUE | PalmSens Emstat 3+ Potentiostat with Bluetooth |
