A polypotentiostat with 4 working electrodes, that makes parallel measuring of multiple electrodes in one electrochemical cell possible.
The additional WE’s can each individually be used in two different modes:
The following techniques are supported by EmStat3 4WE.
Voltammetric techniques:
These methods can all be used in their stripping modes which are applied for (ultra-) trace analysis.
Technique as a function of time:
The additional WE’s can each individually be used in two different modes:
1. The potential of the additional WE has a constant dc-potential offset with respect to WE1
2. The potential of the additional WE has an independent fixed dc-potential
EmStat3 4WE | Main potentiostat | Polypotentiostat modules |
---|---|---|
dc-potential range | ± 3.000 V | ± 3.000 V |
compliance voltage | ± 5 V | ± 5 V |
dc-potential resolution | 0.1 mV | 0.1 mV |
max. dc-offset error | 2 mV | 3 mV |
potential accuracy | 0.2 % | 0.2 % |
current ranges | 1 nA to 10 mA (8 ranges) | 1 nA to 10 mA (8 ranges) |
maximum current | ± 20 mA typical and ± 15 mA minimum for the sum of WE1, W2, W3 and W4 | |
current resolution | 0.1% of current range, 1 pA at lowest current range | |
electrometer amplifier input | > 100 GOhm // 4 pF | > 100 GOhm // 4 pF |
rise time | approx. 100 μs | approx. 100 μs |
Housing: | |
dimensions | 12 cm x 8.5 cm x 3,5 cm |
weight | 250 g |
power | 5 V external power supply (included) |
interfacing | USB |
PC recommendations | Windows Vista, 7, 8 or 10 (32 and 64 bit) Dual core processor with 2 GB RAM |
The current is measured using a zero resistance ammeter (ZRA).
MultiTrace is our standard software for multichannel instruments. It is based on PSTrace and comes standard on a CD as well as download. The channels of a MultiEmStat can be controlled all at once or get individual commands. Also the scripting feature can be used individually or for all channels.