MultiEmStat4

Multi-channel Potentiostat / Galvanostat / Impedance Analyzer

Available with 4, 8 or 12 channels
FRA / EIS: 10 μHz up to 200 kHz
Potential range: ±3 V (LR) or ±6 V (HR)
Max. current: ±30 mA (LR) or ±200 mA (HR)

Version
EIS Electrochemical Impedance Spectroscopy (EIS) is an electrochemical technique to measure the impedance of a system in dependence of the AC potentials frequency. With this option you can select the maximum AC frequency for EIS.
Channels
Galvanic isolation Galvanic Isolation of each channel is needed, if you want to use your potentiostat with other potentiostats in the same cell or want to use it for Zero Resistance Amperometry, continue reading	Clear

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Description
Techniques
Specifications
Software
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Description

No Compromises on Productivity and Performance

The MultiEmStat4 is a compact Potentiostat, Galvanostat, and optional Frequency Response Analyser (FRA) for Electrochemical Impedance Spectroscopy (EIS) with 4, 8 or 12 channels. The MultiEmStat4 comes in two versions; the Low Range version is great for applications that require a low current range down to 1 nA, whereas the High Range version is very suitable for applications that need a maximum current of 200 mA.

The MultiEmStat4 is controlled with MultiTrace for Windows, or you can write your own MethodSCRIPT and control it from any platform or operating system.

Always a backup

The MultiEmStat4 is equipped with 500 MB internal storage memory on each channel for storing your measurements as a backup. All internally stored measurements can be browsed and transferred back to the PC easily using the MultiTrace software. Your data is always with your instrument wherever you take it.

Synchronizing channels in Synched mode

By enabling synchronization of channels and adjusting the setup of your cables, you can use the MultiEmStat4 as a polypotentiostat. This means you can use multiple working electrodes, one counter and one reference electrode in the same cell at the same time. Your working electrodes all perform the same measurement.

Techniques

Voltammetric techniques

Linear Sweep Voltammetry (LSV)
Cyclic Voltammetry (CV)

Amperometric techniques

Chronoamperometry (CA)
Zero Resistance Amperometry (ZRA)
Chronocoulometry (CC)
MultiStep Amperometry (MA)
Pulsed Amperometric Detection (PAD)

Galvanostatic techniques

Linear Sweep Potentiometry (LSP)
Chronopotentiometry (CP)
MultiStep Potentiometry (MP)
Open Circuit Potentiometry (OCP)

Pulsed techniques

Differential Pulse Voltammetry (DPV)
Square Wave Voltammetry (SWV)
Normal Pulse Voltammetry (NPV)

Other

Mixed Mode (MM)
Potentiostatic/Galvanostatic Impedance spectroscopy (EIS / GEIS)
- Potential scan or current scan
- Fixed potential or fixed current
- Time scan

Stripping modes

The voltametric and pulsed techniques can all be used in their stripping modes which are applied for (ultra-) trace analysis.

Missing a technique? See cross-reference list

Specifications

The MultiEmStat4M is available in two versions: the LR (Low Range) and HR (High Range) version.

Main differences between the MultiEmStat4 Low and High Range


Potential range	±3 V	±6 V
Max. compliance voltage The compliance voltage is the maximum voltage that can be applied between the working and counter electrode. Another name could be the maximum cell potential. Continue reading	±5 V	±8 V
Current ranges	1 nA to 10 mA (8 ranges)	100 nA to 100 mA (7 ranges)
Max. current	±30 mA	±200 mA
Electrode connections	WE, RE, CE and ground, 2 mm banana plugs	WE, RE, CE, Sense, and ground, 2 mm banana plugs
Hardware options	EIS up to 200 kHz Galvanic Isolation	EIS up to 200 kHz Galvanic Isolation

General
	LR	HR
dc-potential range The maximum potential difference, that can be applied between WE and RE.	±3 V	±6 V
compliance voltage The compliance voltage is the maximum voltage that can be applied between the working and counter electrode. Another name could be the maximum cell potential. Continue reading	±5 V	±8 V
maximum current	±30 mA	±200 mA
max. data acquisition rate	1 000 000 samples /s

Potentiostat
	LR	HR
applied potential resolution	100 µV	183 µV
applied potential accuracy The applied potential accuracy describes how close to the real values your applied potential is.	≤ 0.2% ±1 mV offset
current ranges A potentiostat measures current. For optimal precision, the range between which currents are measured is split into multiple current ranges. A current range defines the maximum current a potentiostat can measure in a certain range. This means it will also determine the resolution, because the number of bits or rather states is fixed, while the current range is variable.	1 nA to 10 mA 8 ranges	100 nA to 100 mA 7 ranges
measured current resolution The lowest observable difference between two values that a measurement device can differentiate between.	0.009% of CR (92 fA on 1 nA range)	0.009% of CR (9.2 pA on 100 nA range)
measured current accuracy The current accuracy describes how close to the real values your measured current is.	< 0.2% of current ±20 pA ±0.2% of range	< 0.2% of current ±0.2% of range
bandwidth settings	320 Hz, 3.2 kHz, 30 kHz or 570 kHz

Galvanostat
	LR	HR
current ranges A potentiostat measures current. For optimal precision, the range between which currents are measured is split into multiple current ranges. A current range defines the maximum current a potentiostat can measure in a certain range. This means it will also determine the resolution, because the number of bits or rather states is fixed, while the current range is variable.	10 nA, 1 uA, 100 uA, 10 mA 4 ranges	1 uA, 100 uA, 10 mA, 100 mA 4 ranges
applied dc-current	±3 * CR (current range)
applied dc-current resolution	0.01% of CR	0.0183% of CR
applied dc- current accuracy The current accuracy describes how close to the real values your measured current is.	< 0.4% of current ±20 pA ±0.2% of range	< 0.4% of current ±0.2% of range
potential ranges	50 mV, 100 mV, 200 mV, 500 mV, 1 V
measured dc-potential resolution	96 µV at ±3 V (1 V range) 48 µV at ±1.5 V (500 mV) 19.2 µV at ±0.6 V (200 mV) 9.6 µV at ±0.3 V (100 mV) 4.8 µV at ±0.150 V (50 mV)	193 µV at ±6 V (1 V range) 96.5 µV at ±3 V (500 mV) 38.5 µV at ±1.2 V (200 mV) 19.3 µV at ±0.6 V (100 mV) 9.65 µV at ±0.3 V (50 mV)
measured dc-potential accuracy	≤ 0.2% ±1 mV offset
bandwidth settings	320 Hz, 3.2 kHz, 30 kHz or 570 kHz

FRA / EIS
	LR	HR
frequency range	10 µHz to 200 kHz
ac-amplitude range	1 mV to 900 mV rms, or 2.5 V p-p
measured current accuracy The current accuracy describes how close to the real values your measured current is.	≤ 0.2% at Full Scale Range

GEIS
	LR	HR
frequency range	10 µHz to 200 kHz
ac-amplitude range	0.9 * CR (A_rms)

Electrometer

> 1 TΩ // 10 pF

bandwidth

10 kHz default or

500 kHz for EIS and fast CA/CP

Other
	LR	HR
electrode connections	WE, RE, CE, and ground, with 2 mm banana plugs	WE, RE, CE, S and ground, with 2 mm banana plugs
housing	aluminum body: 21.2 x 22.1 x 7.7 cm
weight	± 3 kg
power + communication	USB (type B) port
internal storage space per channel	500 MB, equivalent to > 15M datapoints

MultiEmStat4 LR EIS Accuracy Contour Plot

MultiEmStat4 HR EIS Accuracy Contour Plot

Note

The accuracy contour plots were determined with an ac-amplitude of ≤10 mV rms for all limits, except for the high impedance limit, which was determined using an ac-amplitude of 250 mV. The standard cables were used. Please note that the true limits of an impedance measurement are influenced by all components in the system, e.g. connections, the environment, and the cell.

MultiTrace for Windows

The MultiTrace software gives you full control over the channels of our multi-channel instruments. MultiTrace can be used with multi-channel potentiostats in two different modes; the Individual and Simultaneous mode.

Individual mode

All potentiostats are used independently. Measurements can be started on all channels with one click, or one at a time on individual channels. Each measured curve is shown in its own plot.

Simultaneous mode

All channels run the same measurement at the same time (optionally hardware-synchronized). The measured curves are displayed in a single plot and can be stored together in a single data file or in separate data files.

More information about MultiTrace

Software Development Kits

The PalmSens Software Development Kits (SDKs) for .NET can be used with any of our instruments or OEM potentiostat modules to develop your own software. The SDK’s come with a set of examples that shows how to use the libraries.

PalmSens SDKs with examples are available for the following .NET Frameworks:

WinForms
WPF
Xamarin (for Android)

More information about SDKs for .NET

Downloads
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Documentation (5)

	Name	Last updated
	MultiEmStat4 Brochure MultiEmStat4 Brochure, a Multi-Channel Potentiostat, Galvanostat and Impedance Analyzer.	08-01-25
	MethodSCRIPT v1.5 The MethodSCRIPT scripting language is designed to improve the flexibility of the PalmSens potentiostat and galvanostat devices for OEM users. It allows users to start measurements with arguments that are similar to the arguments in PSTrace. PalmSens provides libraries and examples for handling low level communication and generating scripts for MethodSCRIPT devices such as the EmStat Pico and EmStat4.	25-03-24
	EmStat4M Communication Protocol V1.3 Describes how to communicate with the EmStat4M directly and how to send MethodSCRIPTS.	25-03-24
	EmStat4M Communication Protocol V1.2 Describes how to communicate with the EmStat4M directly and how to send MethodSCRIPTS.	01-02-23
	MethodSCRIPT v1.4 The MethodSCRIPT scripting language is designed to improve the flexibility of the PalmSens potentiostat and galvanostat devices for OEM users. It allows users to start measurements with arguments that are similar to the arguments in PSTrace. PalmSens provides libraries and examples for handling low level communication and generating scripts for MethodSCRIPT devices such as the EmStat Pico and EmStat4.	01-02-23

Software (2)

	Name	Last updated
	MethodSCRIPT code examples MethodSCRIPT code examples include: - MethodSCRIPTExample_C - MethodSCRIPTExample_C_Linux - MethodSCRIPTExample_C# - MethodSCRIPTExample_Arduino - MethodSCRIPTExample_Python - MethodSCRIPTExample_iOS - MethodSCRIPTExample_Android Every code example comes with a "Getting Started" document.	07-07-24
	MultiTrace – PC Software for all Multi-channel instruments The MultiTrace software controls the individual channels of our multi-channel instruments. You can also combine multiple single-channel instruments.	17-03-22

Application Note (1)

	Name	Last updated
	Multi-Channel: Multiple Working Electrodes in the Same Cell Learn how to use a multi-channel potentiostat as a polypotentiostat, so you can use multiple working electrodes in the same cell sharing one reference and counter electrode.	19-01-22

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MultiEmStat4

Multi-channel Potentiostat / Galvanostat / Impedance Analyzer

Description

No Compromises on Productivity and Performance

Always a backup

Always a backup

Synchronizing channels in Synched mode

Techniques

Voltammetric techniques

Amperometric techniques

Galvanostatic techniques

Pulsed techniques

Other

Specifications

Software

MultiTrace for Windows

Individual mode

Simultaneous mode

Software Development Kits

Downloads Expand all Collapse all

Documentation (5)

Software (2)

Application Note (1)

MultiEmStat4 Brochure

Downloads
Expand all Collapse all