Rotating Ring Disk Electrode Apparatus Ver.2.0

RRDE-3A is a constant rotation system for use in hydrodynamic modulation rotating ring disk electrochemistry. A 7 mm diameter electrode with short stainless steel shaft provides for a miniature and concentric circle electrode system that is capable for highly accurate rotation and modulation even at radial modulation rates or wave forms.

RRDE-3A is precisely controlled by PWM (Pulse Width Modulation) signal. Electrodes are small and rapidly interchangeable. The unit also provides an adjustable valve system for inert gas purging inside the cell vial.

RRDE-3A is able to be operated as a stand-alone unit and directly controlled by CH Instrumetns, Inc., Bioanalytical Systems, Inc. electrochemical analyzers, model2325 or other instruments. When the analysis starts, a built-in gas control allows purging the sample.

Besides, the access to glass cell is easy for rinsing, cleaning, and replacing the electrodes. It is easy to remove and replace the cell vial.


  • Compact design & easy operation

  • Operable as RDE and RRDE

  • Remote and manual controlled rotation and gas purge

  • Allows remote control from the PC (rotational speed ON/OFF and gas purge ON/OFF)

  • Rotational speed range 100~8,000 rpm (2000 to 3000 rpm or less is recommended when using DRE)

  • Speed and purge time displayed by LCD display

  • "Model name", "Enclosure version" and "Cumulative total rotation time of the motor" displayed by LCD display

  • "Cleaning" and "Replacement" alert displayed by LCD display

  • Gas line connector is available

  • Purge valve timer control ON/OFF (can be set up to 9999 seconds)

  • Cell lead connects to all potentiostats

  • Open architecture for easy access to cell

  • Shaft is completely insulated for the motor by coupling unit to reduce motor noise

  • In the shaft assembly, the inner and outer tube is completely insulated by Teflon spacer to reduce noise

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Email: contacts@amst.com.vn