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Kristall 650 is an electrolytic polishing and etching tool which is easy to transport and operates independently of the mains. It is ideal for usage outside the lab.

Kristall 680 is a fully automatic electrolytic polisher and etcher with intuitive touchscreen operation. Polishing and etching unit and control unit are separated; Kristall 680 may be operated in a lab fume cabinet. A scan function displays the current voltage curve of a material and quickly provides polishing results without structural changes. The electrolyte vessel may be exchanged and is stored with a lid.

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Available models

Technical specifications
Max. power
160 W
Max. voltage
90 V DC
Max. current
2 A
Polishing area
~ ø 9 mm
W x H x D
380 x 355 x 180 mm
Tank of elektrolyte
1 L
~ 8.5 kg (without elektrolyte)

The KRISTALL 650 is a mobile battery supplied electrolytic polisher and etcher. It convinces by its compact and robust construction, ideal for use outside of the lab.

The simple operation simultaneous with high functionality is matchless. The epoxy-coated aluminium housing meets highest demands on functionality, stability and design. All sensitive parts are well protected for transport and local operation. For maximum comfort it is equipped with handle and carrying strap. 

Key features

  • Portable unit for electrolytic polishing and etching
  • Fully automatic program run controlled by microprocessor
  • Independend from power supply by using Li-Ion storage battery
  • Handle with integrated polishing unit, Start / Stop function
  • Handle with multicolor LED for showing the current operating state
  • Operating panel with clear LCD display for all important operating state
  • Adjustablevoltage and current, adjustable operating time
Technical specifications
Connection power
2 kVA
Max. voltage
90 V DC
Max. current
14 A
Polishing duration
1 sec - 25 min
Etching duration
1 sec - 5 min
W x H x D
330 x 220 x 400mm
~ 7 kg

The KRISTALL 680 is a fully automatic electrolytic polisher and etcher with intuitive touch-screen operation. The polishing and etching unit is separated from the control unit so that the Kristall 680 may also be used in a lab fume cabinet.

A scan function displays the current voltage curve of a material and provides polishing results quickly without structural changes. Handling of the polishing and etching unit was facilitated significantly by the interchangeable 1 Ltr. electrolytic tanks. Different electrolytes can be changed and easily stored with lid. The unit is cleaned with water by a washing program.

Key features

  • Automatic, electrolytic polishing & etching device
  • Touch-screen display with QATM-software control
  • Up to 200 programs with all parameters storable, protected per password
  • Current & voltage diagram in real time
  • Variable output voltage and process duration

Machines and equipment for the materialographic laboratory.

Whatever you need for quality testing and material analysis, QATM has it all: As a manufacturer of high-quality machines for materialography (metallography) and hardness testing, we offer the most comprehensive solution for your needs. We not only supply a wide range of instruments but also accessories, consumables, complete laboratories and tailor-made special-purpose solutions.

We aim for highest quality

Quality is actually part of the name QATM! Our innovative cut-off machines, mounting presses, grinders, polishers/electrolytic etchers, as well as hardness testers and analysis systems provide maximum reliability and flexibility. The R&D departments for hard- and software work in close cooperation with our customers to ensure continuous optimization of our products. QATM is certified according to EN ISO 9001:2015 to make sure our internal procedures for conception, development, purchasing, sales and service are efficient and in accordance with our high standards.

Customers all over the world appreciate QATM’s extensive sales and service network as well as the direct communication with our experts. The comprehensive expertise and creativity of our qualified staff are the basis for the consistent high quality of our solutions.