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EmStat4M Module

Name: EmStat4M Module
Rating: 4.8 (4 reviews)

Tested & calibrated potentiostat module

Desktop performance in the palm of your hand
Enables rapid prototyping
Easy to reproduce measurements using MethodSCRIPT™
Many code examples for different languages and platforms

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.
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Description
Techniques
Specifications
Software
Downloads

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Description

The EmStat4M is a potentiostat/galvanostat module supporting all common electrochemical techniques, including Electrochemical Impedance Spectroscopy (EIS). The EmStat4M can be evaluated with our PSTrace software for Windows. You can write your own applications for the EmStat4M module using our .NET libraries or MethodSCRIPT™ and control it from any platform or operating system.

Versions

The EmStat4M comes in two different versions:

Low Range (LR): current range from 1 nA to 10 mA (max. 30 mA)

High Range (HR): current ranges from 100 nA to 100 mA (max. 200 mA)

Both versions can be configured with optional EIS/FRA with a maximum frequency of 200 kHz.
See specifications for more information.

Onboard storage

Every EmStat4M is equipped with an internal storage of 500 MB, equivalent to 15 million data points.
This means all your measurements can automatically be saved onboard as a backup.

Start developing with the EmStat4M

The EmStat4M module can be ordered as a bare module or as part of a kit. We offer a Starter Kit and Development Kit as well. The Starter Kit includes a sensor cable, software, and more. The Development Kit comes with the EmStat4M module mounted on a development board. The development board features a Bluetooth module, Li-Ion battery charging, and options for making external connections to an Arduino for example. See the table below for an overview of what is included in both kits.

	Module only	Starter Kit	Development Kit
EmStat4M LR or HR module
Development Board	–	–
USB-C cable	–
USB-C splitter cable for extra power (EmStat4M HR only)	–
Sensor cable (1 meter with 2 mm pins)	–
4 or 5 croc clips	–
Dummy Cell	–
PSTrace software for Windows (on USB drive)	–
Quick Start document	–
Calibration report	–

Techniques

Voltammetric techniques

Pulsed techniques

Amperometric techniques

* Will become available with a software update at a later moment.

Potentiometric techniques

* Stripping Chronopotentiometry (SCP or PSA)

Impedimetric techniques

Potentiostatic Electrochemical Impedance Spectroscopy

Galvanostatic Electrochemical Impedance Spectroscopy

Other

Missing a technique? See cross-reference list

Specifications

The EmStat4M is available in two versions: LR (Low Range) and HR (High Range).

Main differences between the EmStat4M Low and High Range

	EMSTAT4M LR™	EMSTAT4M HR™
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 A current range defines the maximum current a potentiostat can measure in a certain range. Continue reading	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	WE, RE, CE, Sense, and ground

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 Also known as Sampling Rate, it describes how fast the instrument can collect measurement values. Continue reading	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 current range defines the maximum current a potentiostat can measure in a certain range. Continue reading	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. Continue reading	0.009% of CR CR is the acronym we use for Current Range. A current range defines the maximum current a potentiostat can measure in a certain range. Continue reading (92 fA on 1 nA range)
measured current accuracy The current accuracy describes how close to the real values your measured current is. Continue reading	≤ 0.2% at Full Scale Range

Galvanostat
	LR	HR
current ranges A current range defines the maximum current a potentiostat can measure in a certain range. Continue reading	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 CR is the acronym we use for Current Range. A current range defines the maximum current a potentiostat can measure in a certain range. Continue reading (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. Continue reading	<0.4% (gain) + 0.002 * CR CR is the acronym we use for Current Range. A current range defines the maximum current a potentiostat can measure in a certain range. Continue reading (offset)
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

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. Continue reading	≤ 0.2% at Full Scale Range

GEIS

frequency range

10 µHz to 100 kHz

ac-amplitude range

0.9 *

(A_rms)

Electrometer

> 1 TΩ // 10 pF

10 kHz default or

500 kHz for EIS and fast CA/CP

Other
	LR	HR
electrode connections	WE, RE, CE, and ground	WE, RE, CE, S and ground
dimensions	62 mm X 40 mm X 7 mm
weight	± 130 g
power + communication	USB-C port
internal storage space	500 MB, equivalent to > 15M datapoints

EmStat4M LR EIS Accuracy Contour Plot

EmStat4M 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.

Develop software for PC, smartphone or microcontroller

The EmStat module can be controlled directly with our PSTrace software for Windows and PStouch app for Android.

Whether you want to write a simple or advanced Windows application with Python, develop an Android or iPhone app or integrate the EmStat module in your own hardware, you can do it with our software development tools and code examples.

For Developers

MethodSCRIPT™ communications protocol

MethodSCRIPT™ is a human-readable programmable language that runs directly on PalmSens’ latest generation of potentiostats and potentiostat modules.

The language supports all standard electrochemical techniques and allows you to combine, sequence, and customize them to build tailored measurement workflows. Once the device receives a script via PSTrace, a serial terminal, or your own custom software, it compiles and executes it on board with no pre-processing required from the host.

By shifting experimental logic and precise timing to the devices themselves, developers can rapidly integrate reliable and low-latency electrochemical applications into automated lab setups, embedded systems and finished end products.

More information about MethodSCRIPT

Downloads
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Software (5)

	Name	Last updated
	EmStat4 Firmware Find out more about the latest firmware and new features. Use PSTrace to change and upload the firmware. PSTrace also contains the latest firmware.	30-06-26
	PSTrace – PC software for all single channel instruments PSTrace software is shipped as standard with all single channel and multiplexed instruments. The software provides support for all techniques and device functionalities.	30-06-26
	Getting started with PalmSens SDKs This page explains how to use the Software Development Kits like Python, and for .NET MAUI with the included libraries and examples.	02-06-26
	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
	PalmSens SDK for Python PalmSens Python SDK 5.12 with support for instruments from PalmSens BV on Windows systems.	07-11-22

Documentation (13)

	Name	Last updated
	EmStat4M Communication Protocol V1.6 Describes how to communicate with the EmStat4M directly and how to send MethodSCRIPTS.	12-06-26
	EmStat4M Communication Protocol V1.5 Describes how to communicate with the EmStat4M directly and how to send MethodSCRIPTS.	24-03-26
	EmStat4M Brochure EmStat4M Brochure including main specifications and practical limitations.	02-02-26
	EmStat4M Communication Protocol V1.4 Describes how to communicate with the EmStat4M directly and how to send MethodSCRIPTS.	10-10-25
	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
	EmStat Pico and EmStat4 bootloader commands This document explains how to enter the bootloader of the EmStat Pico or the EmStat4M and update the firmware.	05-10-23
	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
	EmStat4M Connection Card This connection card provides an overview of the connector pin-outs.	14-03-22
	MethodSCRIPT v1.3 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.	19-01-22
	EmStat4M Communication Protocol V1.0 Describes how to communicate with the EmStat4M directly and how to send MethodSCRIPTS.	14-10-21
	MethodSCRIPT v1.2 MethodSCRIPT v1.2 protocol description	28-04-20

Datasheet (1)

	Name	Last updated
	EmStat4M Datasheet Document with more detailed specifications including module pin-out.	21-01-26

Other (2)

	Name	Last updated
	EmStat4M 3D STEP File Contains two STEP files for both EmStat4M LR and HR. Note that the optional USB connector at the bottom is normally not populated. The HR does not include the heat sinks on the heat pads. See also the EmStat4 HR Datasheet.	19-08-24
	EmStat4M Altium symbol and footprint The ZIP file contains an Altium library with EmStat4M footprint and symbol	19-10-21

Application Note (1)

	Name	Last updated
	Migrating to the EmStat4M LR or HR This Application note shows the differences between our older and latest EmStat modules which are relevant when switching your software and electronics design to work with the EmStat4 LR or HR.	06-10-22

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