Multichannel Potentiostat

CS2350M Bipotentiostat(2-channel, with EIS)

2-Channel potentiostat with EIS in each channel

- Real independent 2-channel potentiostat.Built-in EIS module is equipped in both channels
- CS2350M EIS Bipotentiostat equals that you have 2 sets of independent potentiostat
- Can connect to RRDE rotator of any brand for RRDE test
- Can do the Hydrogen Diffusion Test

- Connects to 2 independent cells, and do the experiment in each channel simultaneously
- Full flaoting for each channel, which ensures the total independecy of each channel

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
Mobile/WhatsApp: +86 13469965984
Product Introduction
BiPotentiostat/BiGalvanostat with built-in EIS model CS2350M has two sets of built-in independent potentiostat /galvanostat. So it equals that you have 2 sets potentiostat/galvanostat in one instrument. Each set provides full electrochemical techniques including EIS. Experiments can be conducted simultaneously in each channel. Besides this, the two channels can jointly complete experiment of two-working electrode system such as RRDE and Hydrogen diffusion. CS2350M bipotentiostat is the real double-channel potentiostat. It uses Ethernet connection. EIS module is included in each channel. CS2350M EIS bipotentiostat is an affordable instrument. With the same level and function product, our price is just half or one third of some other brands.

(1) Electrosynthesis, electrodeposition (electroplating), anodic oxidation, electrolysis
(2) Oxygen reduction reaction (ORR), oxygen evolution reaction (OER), Hydrogen evolution reaction (HER), carbon dioxide reduction.
(3) Energy and materials (Li-ion battery, solar cell, fuel cell, supercapacitor), advanced function materials, and sensor.
(4) Corrosion behavior of metals, and anti-corrosion evaluation

(5) Fast evaluation of inhibitor, water quality stabilizer, coating, and cathodic protection efficiency.

Standard supply
Instrument CS2350M x1
CS studio software x1
Power cable x1
Ethernet cable x1
Cell cable x 4
Dummy cell (1kΩ||100µF) x2

After-sales Service (**All the after service is FREE)
1. Warranty period: 5 years.
2. Provide installation guide, manual, software installation video, and training videos.
3. Lifetime free software upgrading of the same model and technical service.
4. Free repair service

Typical applications

Rotating ring-disk electrode (RRDE)
Oxidation/reduction reaction (ORR) study: while measuring the polarization curve of disk electrode in the main channel, apply a constant polarization potential on the ring electrode, and thus detect the intermediate products on the disk electrode. RRDE test becomes the typical method for ORR study. CS2350M can be connected to any RRDE equipment.

Hydrogen diffusion test (HDT)
CS2350M bipotentiostat is combined with H-cells. By measuring current of cathode hydrogen charging and hydrogen atoms anode oxidation, it can further calculate the diffusion coefficient of hydrogen atoms in metal and hydrogen flux.

Technical advantages

1. Impedance (EIS)
Corrtest potentiostat applies correlation integral algorithm and dual-channel over-sampling technique, and has strong anti-interference ability. It is suitable for EIS measurements of high-impedance system (>109Ω, such as coating, concrete etc.).
EIS of AA6063 Al alloy in Ce3+ containing 3% NaCl solution
2. Polarization curve
Tafel plot can be obtained. The user can set the anodic reversal current (passivation film breakdown current) of the cyclic polarization curve to obtain material’s pitting potential and protection potential and uate the its susceptibility to intergranular corrosion. The software uses non-linear fitting to analyze polarization curve, and can make fast evaluation of material’s anti-corrosion ability and inhibitors.
Polarization curve of Ti-based amorphous alloy & stainless steel in 3%NaCl solution
3. Voltammetry
Linear Sweep Voltammetry(LSV), Cyclic Voltammetry(CV), SCV, SWV, DPV, NPV,ACV, Stripping voltammetry etc. It integrates calculation of peak area, peak current and standard curve analysis.
 LSV: mesoporous carbon material in 0.1M KOH               CV of PPy supercapacitor in 0.5 mol/L H2SO4
4. Electrochemical Noise
With high-resistance follower and zero-resistance ammeter, it measures the natural potential/current fluctuations in corrosion system. It can be used to study pitting corrosion, galvanic corrosion, crevice corrosion, and stress corrosion cracking etc. Based on calculation of noise resistance and pitting index, it can complete localized corrosion monitoring.
5. Full floating measurement
Full-floating mode be used for autoclave electrochemical measurements, on-line corrosion monitoring of metallic components under the ground (rebar in concrete, etc.)

6. Software development kit (SDK)
  We are able to provide API functions and development examples, which facilitates some users’ requirements for secondary development and self-defined measurements. We can provide .dll file.

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 Interface: Ethernet
Potential control range: Primary Channel: ±10V second Channel: ±10V Current control range: ±1A for each channel
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: ±1A for each channel 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
Potential and current range: Automatic Weight / Measurements: 8kg,36.5 x 30.5 x16cm
 Operating System: Windows 10/11
Electrochemical Impedance Spectroscopy (EIS)
Signal generator
Frequency range:10μHz~1MHz AC amplitude: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 cycle
Maximum:10cycles or 105s
Measurement delay:0~105s
DC offset compensation
Potential auto compensation range: -10V~+10V Current compensation range: -1A~+1A
Bandwidth: 8-decade frequency range, automatic and manual setting
Techniques/Methods in each channel - CS2350M

Stable polarization
  • Open Circuit Potential (OCP)
  • Potentiostatic (I-T curve)
  • Galvanostatic
  • Potentiodynamic (Tafel plot)
  • Galvanodynamic (DGP)
  • Sweep-Step Functions (SSF)
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
  • Potentiostatic Intermittent Titration Technique
  • Galvanostatic Intermittent Titration Technique
  • Data Logger
  • Electrochemical Stripping/ Deposition
  • Bulk Eletrolysis with Coulometry (BE)
  • Rs Measurement

Home  About Us  Potentiostat/Galvanostat  Accessories  Support  Contact Us  

Copyright By © 2008-2021 Wuhan Corrtest Instrument Corp., Ltd

This website stores cookies on your computer. These cookies are used to improve your website experience and provide more personalized services to you, both on this website and through other media. To find out more about the cookies we use, see our Privacy Policy.
We won't track your information when you visit our site. But in order to comply with your preferences, we'll have to use just one tiny cookie so that you're not asked to make this choice again.