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Reference 620 Potentiostat

Gamry Instruments992-00165Available: Worldwide

A high-performance potentiostat suitable for applications in physechem,  coatings, and corrosion.

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Average Rating 4.7

|62Scientists have reviewed this product

Ease of Use
After Sales Service
Value for Money
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Great result


Average Rating 5.0

Application Area:

MEMS application

It a good EP equipmnet, a accurate current and voltage. My experiment finally success.

Review Date: 17 Sept 2023 | Gamry Instruments

Amazing instrument to use.


Average Rating 5.0

Application Area:

Corrosion testing of metallic samples

We are using this equipment for 5 years. It is very easy to use and performs a lot of corrosion testing on different materials, including aluminium alloys, nickel-based superalloys, zirconium alloys, and titanium alloys. This is value for money. The sales care service is wonderful.

Review Date: 16 Sept 2022 | Gamry Instruments

Great results, reproducible results, easy to use


Average Rating 4.7

Application Area:


Gamry potentiostats are very easy to use, the software is intuitive. Reproducible results can be found. The equipments have a wide application range. In my case, in the evaluation of polymer coatings for the oil & gas industry, it has been an effective tool. The impedance ranges are wide, making evaluation easy.

Review Date: 28 Jun 2022 | Gamry Instruments

The Reference 620 Potentiostat is the Cadillac of potentiostats!


Average Rating 4.0

Application Area:

Corrosion protection performance of organic coatings

I run potentiostatic electrochemical impedance spectroscopy with this equipment. The data are extremely high quality. The technique and potentiostat are very sensitive. The interface is user-friendly, and the software is easy to maneuver. I have not had to call Gamry for after-sales care, so I gave the item 3 stars in this category for neutral. Based on my phone calls with Gamry regarding other product inquiries, however, I would expect excellent after-sales care.

Review Date: 14 Jun 2022 | Gamry Instruments

Great results


Average Rating 5.0

Application Area:

Corrosion studies

The device and its software are user-friendly. The results are great, especially for very low current systems.

Review Date: 14 Jun 2022 | Gamry Instruments

Great results, easy to use and install


Average Rating 5.0

Application Area:

Corrosion studies

The device is very robust with excellent performance for our applications. The software is user-friendly, which is important for our lab, because we receive a lot of students without know-how in this field.

Review Date: 5 Apr 2022 | Gamry Instruments

Reliable results in electrochemistry with this potentiostat.


Average Rating 4.7

Application Area:

Corrosion test

The potentiostat is very reliable, stable and easy to use.

Review Date: 25 Mar 2022 | Gamry Instruments

Workhorse of CV and EIS


Average Rating 5.0

Application Area:

Electrode kinetics using cyclic voltammetry

I have been doing fundamental 3E electrochemistry for about 10 years now, have used CHI, Biologic, Gamry and Princeton instruments. For CV and EIS, you really can't do better than the reference 620. Signal to noise is fantastic, scripting is possible (and scientists at gamry will write scripts for you if you need something unavailable!), and the EIS data is publication quality everytime. While the price is higher than Biologic, this Pstat surpasses all others for 3E fundamental electrochemistry!

Review Date: 16 Dec 2021 | Gamry Instruments

Good ease of use, after sales support in India need lots of work


Average Rating 2.7

Application Area:

Electrochemistry measurement & corrosion rate

We have almost 10 potentiostats we use in our lab. In terms of ease of use, I would rate this as one of the easiest. The bigger challenge is after sales support in India, we have been following up on a problem from many months, which is not yet resolved. The technical team also takes a lot of time to come back and fix the issue. Speaking frankly, if I find a better alternative to Gamry with better service support, I will be switching to it for sure.

Review Date: 5 May 2021 | Gamry Instruments

Manufacturer's Response

Thank you for the positive review of our instrument’s ease of use. We are working on addressing your concern regarding our after sales support and will be reaching out directly in order to better understand how we can better help you.

Very good potentiostat/galvanostat, easy to use and robust.


Average Rating 4.3

Application Area:


Very good potentiostat/galvanostat, easy to use and robust. It works fine for both AC and DC measurements. Computer control and software is friendly.

Review Date: 10 Mar 2021 | Gamry Instruments

The Reference 620 is a high-performance, research-grade potentiostat/galvanostat/ZRA designed for fast, low-current measurements. It does well for a variety of applications such as physical electrochemistry (especially at microelectrodes), fast cyclic voltammetry, electrochemical corrosion, electrochemical noise measurements, paints and coatings, and sensors.

It has a number of auxiliary input and outputs designed to help you interface or control ancillary equipment such as a rotating disc electrode. It also has a thermocouple input for temperature measurements.


  • For low-current applications
  • 2, 3, 4, 5, or 6 cell connections
  • 11 current ranges from 600 mA to 60 pA
  • Compliance voltage limit of ± 22V
  • Applied voltage limit of ± 12V
  • EIS to 5 MHz

Techniques Available:

  • Physical Electrochemistry
  • Pulse Voltammetry
  • Electrochemical Corrosion
  • Electrochemical Noise Measurements
  • Electrochemical Impedance Spectroscopy
  • Critical Pitting Temperature
  • Custom techniques available

Product Overview