Single channel potentiostat

CS350M EIS Potentiostat /Galvanostat

CS350M is the most advanced single channel potentiostat with all electrochemical techniques incl. EIS.

- Dual-channel high-speed 16bit/high-accuracy 24bit AD converter;
- Built-in EIS/FRA,EIS Frequency range: 10μHz~1MHz
- Built-in FPGA DDS digital signals synthesizer
- High-power Potentiostat/Galvanostat/ZRA;
- Potential control range: ±10V; Compliance voltage: ±21V
- Current control range: ±2A
- Potential resolution: 10μV; current resolution 1pA
Related Application
Contact Us
Corrtest Instruments
Jinfeng Building A, Intl Enterprise Center, Optics valley Ave.,East lake High-tech Dev. Zone, Wuhan city, 430074, China
Phone/WhatsApp: +86 13469965984
Product Introduction
Corrtest potentiostat /galvanostat / electrochemical workstation CS350M consists of DDS arbitrary function generator, high power potentiostat/galvanostat, dual-channel correlation analyzer, dual-channel high-speed 16bit/high-precision 24bit AD converter and extension interfaces. It has more than 40 electrochemical methods including built-in EIS (frequency range 10μHz~1MHz). Max. current is ±2A, potential range is ±10V. It can be used for various electrochemical fields such as corrosion, energy, material and electroanalysis. The current can be boosted up to 20A with a current booster, and compliance voltage can be expanded up to 30V, which can meet the needs of power batteries, electrolysis and electrodeposition field.

 Reaction mechanism of Electrosynthesis, electrodeposition, anodic oxidation, etc.
 Electrochemical analysis and sensor;  
● New energy materials (Li-ion battery, solar cell, fuel cell, supercapacitors), advanced functional materials, photoelectronic materials;
● Corrosion study of metals in water, concrete and soil, etc;
 Fast evaluation of corrosion inhibitor, water stabilizer, coating and cathodic protection efficiency.

Standard supply list for each set
Instrument host CS350M  x1
CS studio software x1
Power cable x1
USB cable x1
Cell cable x2
Dummy cell(1kΩ||100µF) x1
Manual x1

Service: (**all the service is free)
1. Warranty period: 5 years
2. Provide installation guidance and manual, software installation video.
3. Lifetime free software upgrading and technical service
4. Provide repair service for free

Corrtest potentiostat includes all the electrochemical techniques for corrosion measurement such as OCP, polarization curve (potentiodynamic), EIS, Cyclic polarization CPP (passivation curve), Electrochemical Potentiokinetic Reactivation (EPR), Hydrogen diffusion test, ZRA, Electrochemical noise, etc. It can be used to study metal corrosion mechanism and corrosion resistance, and evaluate the coating durability and sacrificial anode current efficiency. It can also be used for rapid screening of corrosion inhibitors, fungicides, etc.
Polarization curve of Ti-based amorphous alloy & stainless steel in 3%NaCl solution

EN of low-carbon steel in 0.05mol/LCl+0.1mol/LNaHCO3

It uses correlation integral algorithm and dual-channel over-sampling technique, and has strong anti-interference ability. The internal resistance of the instrument is up to 1013Ω. It's suitable for EIS measurements of high-impedance system (such as coating, concrete etc.)

Salt spray aging test of high impedance coating
With techniques LSV, CV, galvanostatic charge and discharge (GCD), Constant potential/ current EIS, and precise IR compensation circuit, Corrtest potentiostats are widely used in supercapacitor, Li-ion batteries, sodium-ion batteries, fuel cell, Li-S batteries, solar cell, solid-state batteries, flow batteries, metal-air batteries etc. It is an excellent scientific tool for researchers in the fields of energy and materials.

CV curve of PPy supercapacitor in 0.5 mol/L H2SO4 solution
CS350M potentiostat includes all the voltammetric methods such as NPV, DNPV, SWV, ACV, and can be used for fast analysis of the trace elements in the solution. Voltammetry stripping methods can do the Quantitative analysis according to the stripping peak current.
Stripping voltametric curves in solution of different Pb2+, Cd 2+,Zn2+ concentration

Corrtest potentiostat can measure the half-wave potential (ORR), overpotential (HER, OER) of the catalyst, and has the function of peak power density and energy density calculation.
Long-term cyclic measurement for ORR, OER, HER,CO2RR by techniques such as cyclic voltammetry, potentiostatic, galvanostatic. Faraday efficiency can be measured with a bipotentiostat.
LSV curve of catalysts in alkaline solution

Maximum current can be 20A and compliance voltage can be 30V, and with IR compensation technique, Corrtest potentiostat can precisely measure the overpotential of the electrode, which is a big advantage in electrocatalysis field.


Full floating
All Corrtest potentiostats / galvanostats are designed as full-floating, and can be used for electrochemical study of working electrode connecting to earth, such as autoclave, metal part in bridge, concrete
Corrtest potentiostat uses correlation integral algorithm and dual- channel over-sampling technique, and has strong anti-interference ability. The internal resistance of the instrument is up to 1013Ω. It's suitable for EIS measurements of high-impedance system (such as coating, concrete etc.)
With constant current carrier and DC bias technology, Corrtest potentiostat can be used for battery impedance measurement under charge and discharge state, suitable for ultra-low resistance system (such as 18650 battery, soft pack battery, battery core...)
EIS Accuracy
Multi electrode system
Support 2-, 3-, 4-electrode system, can be used to test battery internal resistance or 4-electrode thin film impedance measurement
With Zero resistance ammeter for galvanic current measurement
Combination test
CS studio software supports the combination test for various experiments to achieve flexible and unattended test. You can set the parameters for each experiment in advance, and set the intervals, wait time etc between each experiment.
Combination Test: corrosion tests
Combination Test: Pseudocapacitor tests

High current option
● With the booster, the current can be boosted to20A, which meets the requirement in fuel cell, power battery, electroplating, etc
● Can customize the instrument to be 30V high compliance voltage, which meets the test requirement in low-conductivity solutions (organic system, concrete system etc), especially suitable for carbon and nitrogen reduction study.

Software development kit(SDK)
We can provide secondary development interfaces,API general interfaces and development examples, and can realize data call for Labview, C, C++, C#, VC and other program, which is convenient for secondary development and test methods customization.
Real-time data storage
Experiment data can be stored in real time. Even if the test is interrupted by a power failure, the data will be automatically saved. The data is compatible with Excel, Origin, and can be directly opened in third-party software for data processing and curve drawing.

Versatile data analysis
CS Studio is the software for Corrtest potentiostat for experiment control and data analysis. It can do: multi-parameter Tafel curve fitting, derivation, integration and peak height analysis of voltammetric curve, EIS equivalent circuit customization and impedance spectrum fitting, etc.
Multi-parameters Polarization curve
EIS fitting
Electrochemical noise analysis
Pseudocapacitance calculation
GCD specific capacitance, efficiency
Mott-Schottky plot analysis
CV analysis
Software Features

Cyclic voltammetry:
CS studio software provides users a versatile smoothing/differential/ integration kit, which can complete the calculation of peak height, peak area and peak potential of CV curves. In CV technique, during the data analysis, there is function of selecting exact cycle(s) to show. You can choose to see a cycle or some cycles as you want. You can also export data or vector graph of an exact cycle or several cycles.
Tafel plot and corrosion rate:
CS studio also provides powerful non-linear fitting on Butler-Volmer equation of polarization curve. It can calculate Tafel slope, corrosion current density, limitation current, polarization resistance, corrosion rate. It can also calculate the power spectrum density, noise resistance and noise spectrum resistance based on the electrochemical noise measurements.
Battery Test and analysis: 
charge & discharge efficiency, capacity, specific capacitance, charge & discharge energy.

EIS analysis: Bode, Nyquist, Mott-Schottky plot
During EIS data analysis, there is built-in fitting function to draw the custom equivalent circuit.
Real time saving of data: The data can be automatically saved even in case of sudden power off.

Combination test: it can facilitate the automation of experiments and save time. With the unique function of combination test, you can choose several techniques, and set the wait time, the start time, and the cycles. Choose the experiments you want to run. Then you can make auto measurement of the set experiments as you want without having to wait in the lab. This function is especially useful if you have multi experiments to run and save your time greatly.


Data open: You can open the data files by txt format in notepad. Data can also be opened in Origin
Support 2-, 3- or 4-electrode system Potential and current range: Automatic
Potential control range: ±10V Current control range: ±2A
Potential control accuracy: 0.1%×full range±1mV Current control accuracy: 0.1%×full range
Potential resolution: 10μV (>100Hz),3μV (<10Hz) Current sensitivity:1pA
Rise time: <1μS (<10mA), <10μS (<2A) Reference electrode input impedance:1012Ω||20pF
Current range: 2nA~2A, 10 ranges Compliance voltage: ±21V
Maximum current output: 2A CV and LSV scan rate: 0.001mV~10,000V/s
CA and CC pulse width: 0.0001~65,000s Current increment during scan: 1mA@1A/ms
Potential increment during scan: 0.076mV@1V/ms SWV frequency: 0.001~100 kHz
DPV and NPV pulse width: 0.0001~1000s AD data acquisition:16bit@1 MHz,20bit@1 kHz
DA Resolution:16bit, setup time:1μs Minimum potential increment in CV: 0.075mV
IMP frequency: 10μHz~1MHz Low-pass filters: covering 8-decade
Operating System: Windows 7/8/10/11  Interface: USB 2.0
Weight / Measurements: 6.5kg, 36.5 x 30.5 x16 cm
EIS (Electrochemical Impedance Spectroscopy)
Signal generator
Frequency range:10μHz~1MHz AC amplitude: 0.1mV~2500mV
DC Bias: -10~+10V Output impedance: 50Ω
Waveform: sine wave, triangular wave and square wave Wave distortion: <1%
Scanning mode: logarithmic/linear, increase/decrease
Signal analyzer
Integral time: minimum:10ms or the longest time of a 
Maximum:106 cycles or 105s
Measurement delay: 0~105s
DC offset compensation
Potential automatic compensation range: -10V~+10V Current compensation range: -1A~+1A
Bandwidth: 8-decade frequency range, automatic and manual setting
Techniques /Software of Model CS350M
Stable polarization
  • Open Circuit Potential (OCP)
  • Potentiostatic (I-T curve)
  • Galvanostatic
  • Potentiodynamic (Tafel plot)
  • Galvanodynamic (DGP)
Transient Polarization
  • Multi Potential Steps
  • Multi Current Steps
  • Potential Stair-Step (VSTEP)
  • Galvanic Stair-Step (ISTEP)
Chrono Method
  • Chronopotentiometry (CP)
  • Chronoamperametry (CA)
  • Chronocaulometry (CC)
  • Linear Sweep Voltammetry (LSV)
  • Cylic Voltammetry (CV)
  • Staircase Voltammetry (SCV)
  • Square Wave Voltammetry (SWV)
  • Differential Pulse Voltammetry (DPV)
  • Normal Pulse Voltammetry (NPV)#
  • Differential Normal Pulse Voltammetry (DNPV)
  • AC Voltammetry (ACV)
  • 2nd harmonic AC Voltammetry (SHACV)
  • Fourier Transform AC Voltammetry (FTACV)
  • Differential Pulse Amperometry (DPA)
  • Double Differential Pulse Amperometry (DDPA)
  • Triple Pulse Amperometry (TPA)
  • Integrated Pulse Amperometric Detection (IPAD)
Stripping Voltammetry
  • Potentiostatic Stripping
  • Linear Stripping
  • Staircase Stripping
  • Square Wave Stripping
  • Differential Pulse Voltammetry Stripping
  • Normal Pulse Voltammetry Stripping
  • Differential Normal Pulse Voltammetry Stripping
Electrochemical Impedance Spectroscopy (EIS)
  • EIS vs Frequency (IMP)
  • Galvanostatic EIS
  • EIS vs Potential (IMPE)(Mott-Schottky)
  • EIS vs Time (IMPT)
  • Galvanostatic EIS vs Time
Corrosion Measurements
  • Cyclic polarization curve (CPP)
  • Linear polarization curve (LPR)
  • Electrochemical Potentiokinetic Reactivation (EPR)
  • Electrochemical Noise (EN)
  • Zero resistance Ammeter (ZRA)
Battery test
  • Battery Charge and Discharge
  • Galvanostatic Charge and Discharge (GCD)
  • Potentiostatic Charging and Discharging(PCD)
  • Potentiostatic Intermittent Titration Technique(PITT)
  • Galvanostatic Intermittent Titration Technique(GITT)
  • Data Logger
  • Electrochemical Stripping/ Deposition
  • Bulk Eletrolysis with Coulometry (BE)
  • Rs measurement

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