Electro Polishing & Etching System

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Special features

  • Automatic, microprocessor controlled electrolytic polishing and
  • etching of metallographic specimens.
  • Scanning function for easy determination of parameters.
  • Built-in safety features.
  • Database with methods for various materials.
  • Short polishing times and maximum reproducibility.

struers_polishingLectropol-5 is equipped with a unique scanning function. The sample is placed on the polishing table and a pre-defined voltage range is scanned to determine the current density curve. This curve is used to define the correct voltage for both polishing and etching. Electrolytic polishing and etching have the advantage of very short preparation times compared to normal mechanical specimen preparation. It combines both short preparation times and high reproducibility and is thus the ideal choice for fast quality control requirements. It consists of two separate units, the control unit and the polishing unit.

struers_lectropolControl unit: Both the power supply and the programming and monitoring functions are incorporated in the control unit. The unit is operated on the touch pad and on the backlit graphic display, all parameters are presented. Upon pressing the Start button, the display changes, and the on going process can be monitored. Parameters like current, electrolyte temperature and elapsed polishing/etching time are displayed.

Polishing unit: The polishing unit can be placed in a fume cabinet and the control unit is set up outside. With an additional start and stop key the process can also be started directly from the polishing unit. The electrolyte is stored in easily exchangeable electrolyte containers which are inserted into the polishing unit. On the polishing table the sample is positioned and electric contact is established through the anode arm. Instead of time consuming trial and error testing of parameters it is now easy to find the correct settings after a single scan of a new sample material.

struers_scanCooling control: LectroPol-5 is equipped with a built-in measuring and control system, constantly monitoring the electrolyte temperature and keeps the temperature at the pre-set value. It can be connected to an external cooling unit and with this set-up, materials can be polished at sub-zero temperatures.

PC-Interface: With this interface we can operate from a PC. The scans can be transferred into a spread sheet and compared and saved. This allows for the comparison of the behavior of different materials or tracking the ageing of electrolytes.


  • 10 polishing/etching methods for various materials are included.
  • 20 user-defined methods can also be saved in the data base.
  • No need of trial runs.
  • We can operate from a PC with PC interface.


  • We can polish at sub-zero temperature.
  • Very good polish in limited time.
  • Excellent for Metallographic specimen preparation.

For more information please visit www.struers.com