Product Description

The MultiEmStat is a versatile multi potentiostat with 4, 8 or 12 independent EmStat potentiostats. The channels can perform experiments independently of each other.

The MultiEmStat is conveniently connected by means of a single USB connection and controlled by MultiTrace. Each potentiostat has eight (EmStat3) or nine (EmStat3+) current ranges: 1 nA to 10 mA/100 mA with a resolution of 1 pA at the lowest current range and can automatically select the optimal current range.

Accessories

Standard packaging includes a shielded cable for each channel with connections for a working, a counter and a reference electrode by means of 2 mm banana connectors (crocodile clips included), a USB cable and an AC adapter. The four channel MultiEmStat3 will be delivered in a small housing which is USB powered for extra mobility.

For more information about the difference between a multiplexer, a multichannel device and a polypotentiostat, click here.

 

Techniques

The following techniques are supported by MultiEmStat.

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

MultiEmStat3 is available as four channel in the small housing and 8 and 12 channel in the larger housing.
MultiEmStat3+ is available as 4, 8 or 12 channel and always comes in the larger housing.

MultiEmStat 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
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
electrometer amplifier input       > 100 Gohm // 4 pF
rise time     approx. 100 μs
housing  MultiEmStat3 4Ch: 8 cm x 12 cm x 3.5 cm
other: 20 cm x 12 cm x 7 cm
weight  MultiEmStat3 4Ch: 0.260 kg
interfacing  USB
power external 5V adapter for MultiEmStat3 4Ch
external 9V adapter for all other versions
sensor connection shielded cable with circular connector for WE, Sense (MultiEmStat3+), RE and CE

Software

MultiTrace's user interface

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 can be controlled all at once or get individual commands. Also the scripting feature can be used individually or for all channels.

Documentation

– MultiEmStat description.pdf
– Decision Guide: Multiplexer, Polypotentiostat, or Multipotentiostat.pdf

MultiEmStat

The quotation includes the prices for 4, 8, or 12 channels as well as for EmStat3 or EmStat3+ units.