Electrochemistry
Electrochemistry & Potentiostats: Applications, Methods and Lab Equipment
A guide to choosing a potentiostat and electrochemical cell equipment for corrosion, battery, catalysis, sensor, heavy-metal analysis and electrodeposition research. AMI Scientific is the official Corrtest distributor in Indonesia.
- Official distributorof Corrtest in Indonesia
- 40+ techniqueson single-channel EIS models
- Tax invoice & e-Cataloguefor institutional procurement
- Measure firstwith AMI's analysis service
What are electrochemistry and potentiostats?
Electrochemistry studies reactions that involve electron transfer at the interface between an electrode and an electrolyte. These reactions happen when metals corrode, when a battery charges and discharges, when a catalyst splits water into hydrogen, and when a sensor detects glucose or metal ions in a sample.
A potentiostat controls the potential of the working electrode (WE) against a reference electrode (RE) while measuring the current that flows through the counter electrode (CE). A galvanostat does the reverse: it controls the current and measures the potential. Modern instruments combine both, plus a frequency response analyser for impedance spectroscopy (EIS). The combination is often called an electrochemical workstation.
Results depend as much on the cell and electrodes as on the potentiostat. That is why each application page below covers the methods, the instrument and the accessories together.
Choose by application
Six main potentiostat application areas, each with methods, recommended models and equipment packages.
Corrosion & Coating Testing
Tafel, LPR, coating EIS, pitting, inhibitors and hydrogen permeation.
Read moreBattery & Supercapacitor Research
CV, GCD, EIS and GITT for electrode materials, coin cells and supercapacitors.
Read moreElectrocatalysis & Fuel Cells
HER, OER, ORR, CO₂RR, water splitting, RRDE and photoelectrochemistry.
Read moreElectrochemical Sensors & Biosensors
CV, DPV, SWV, amperometry and EIS for glucose, drug and pollutant sensors.
Read moreHeavy-Metal Analysis (Stripping)
ASV and stripping voltammetry for Pb, Cd, Zn, Cu and Hg in water and food.
Read moreElectrodeposition & Electroplating
Potentiostatic, galvanostatic and pulse deposition of metal coatings and thin films.
Read more
Main techniques and what they are for
| Technique | What it measures | Used in |
|---|---|---|
| Cyclic voltammetry (CV) | Current while the potential is swept back and forth; redox peaks, reversibility, capacitance | Batteries, supercapacitors, sensors, catalysts |
| Linear sweep voltammetry (LSV) | Current on a one-way sweep; overpotential, electrochemical window | HER/OER/ORR, electrolyte stability |
| EIS (impedance) | Response to a small AC signal over many frequencies; Rs, Rct, capacitance, diffusion | Coatings, batteries, sensors, catalysts |
| Potentiodynamic polarisation (Tafel) | Corrosion potential and current, Tafel slopes | Corrosion, inhibitors |
| Linear polarisation resistance (LPR) | Polarisation resistance Rp near the corrosion potential | Corrosion-rate monitoring |
| Galvanostatic charge-discharge (GCD) | Capacity, specific capacitance, coulombic efficiency | Batteries, supercapacitors |
| DPV, SWV, stripping voltammetry | Peak current proportional to concentration, highly sensitive | Sensors, heavy metals |
| Chronoamperometry / chronopotentiometry | Current or potential over time at fixed conditions | Catalyst stability, electrodeposition, sensors |
| GITT / PITT | Ion diffusion coefficient inside the electrode material | Batteries |
| Mott-Schottky | Flat-band potential and carrier density of semiconductors | Photoelectrochemistry, passive films |
| Electrochemical noise (EN) / ZRA | Spontaneous current and potential fluctuations; galvanic current between metals | Localised corrosion, pitting, galvanic corrosion |
Corrtest potentiostat models
Summary specifications from the 2026 Corrtest brochure. All single-channel models support 2-, 3- and 4-electrode configurations and floating mode.
| Product | Best for | Price | Purchase |
|---|---|---|---|
| Corrtest CS300M (no EIS) | ±2 A, no EIS. Enough for CV, LSV, Tafel, DPV/SWV. | Rp 99.144.000 | Buy online |
| Corrtest CS310M (EIS, ±2 A) | Single channel ±2 A with EIS but no pulse voltammetry (DPV/SWV); for corrosion and batteries. | Rp 129.438.000 | Buy online |
| Corrtest CS350M (EIS to 1 MHz, ±2 A) | Single channel ±2 A, ±21 V compliance (±30 V optional), EIS to 1 MHz, full pulse voltammetry, booster-ready to 20/50/100 A. | Rp 167.884.000 | Buy online |
| Corrtest CS1350Pro (±5 A) | Up to ±5 A for large electrodes and electrocatalysis. | Rp 183.885.000 | Buy online |
| Corrtest CS350Pro (EIS to 5 MHz) | EIS to 5 MHz and ±30 V compliance. | Rp 199.500.000 | Buy online |
| Corrtest CS2350M bipotentiostat (2 channels) | Two independent ±1 A channels; for RRDE, hydrogen permeation, Faradaic efficiency. | Rp 190.026.000 | Buy online |
| Corrtest CS310X multichannel (option A, 4 channels) | 4–8 independent ±1 A channels for testing many cells at once. | Rp 240.700.000 | Buy online |
| Corrtest CS100ME portable (Bluetooth) | Handheld ±100 mA, EIS to 1 MHz, built-in 10 Ah battery; for sensors and field tests. | on request | Request quote |
| Corrtest CS2020B 20 A current booster | Raises one channel to ±20 A for power batteries, electrolysis, plating. | Rp 132.425.000 | Buy online |
Store catalogue prices before 11% VAT and shipping; subject to change. Stock and delivery time are confirmed in the quotation.
How to choose a potentiostat
Start from the experiment
- Current range: microelectrodes and sensors need fine current resolution; large electrodes, power batteries and electrolysis need high current or a booster.
- EIS or not: impedance is essential for coatings, batteries and impedimetric biosensors. If you only need CV and Tafel, a model without EIS saves money.
- Compliance voltage: high-resistance electrolytes or large cells need a higher control voltage.
Think about how the lab works
- Channels: multichannel speeds up testing many samples; a bipotentiostat is needed for RRDE and hydrogen permeation.
- Floating mode: important when the working electrode is grounded, such as autoclaves or concrete structures.
- Software: check for Tafel fitting, EIS equivalent-circuit fitting, DRT and data export. Corrtest also provides an SDK for Python and LabVIEW.
Want to try a measurement before buying?
AMI Scientific offers an electrochemical analysis service (CV, EIS and charge-discharge testing) so you can test samples first. For teaching labs and basic CV, the compact Ossila potentiostat is also available. Prices for every model are on the potentiostat price page.
Frequently asked questions
What is the difference between a potentiostat and a galvanostat?
A potentiostat controls potential and measures current; a galvanostat controls current and measures potential. Corrtest models work in both modes.
When should I use a 2-, 3- or 4-electrode setup?
Use 3 electrodes to study one electrode on its own, 2 electrodes for complete devices such as coin cells or symmetric supercapacitors, and 4 electrodes to measure membranes or thin films without electrode-interface effects.
Is AMI an official Corrtest distributor?
Yes. AMI Scientific is the official Corrtest distributor in Indonesia.
Do I need an EIS module?
Yes if you study coatings, batteries, supercapacitors, membranes or impedimetric biosensors. For CV, LSV, Tafel and pulse voltammetry only, a model without EIS such as the CS300M is enough.
Can AMI analyse my samples?
Yes. See the electrochemical analysis service for CV, EIS and charge-discharge testing.
Need help choosing?
Tell us about your samples, methods and budget. Our team will put together the equipment and supplies with a formal quotation.
Related topics
- Corrosion & Coating Testing
- Battery & Supercapacitor Research
- Electrocatalysis & Fuel Cells
- Electrochemical Sensors & Biosensors
- Heavy-Metal Analysis (Stripping)
- Electrodeposition & Electroplating
- Potentiostat prices 2026
- Electrochemical accessories
- All Corrtest products
- Electrochemical analysis service
