Galvano Test

Galvano Test

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Galvano Test

GalvanoTest  Versatile Coating Thickness Gauge, Make : Elektrophysik - Germany  measures almost any electroplated coating/base combination

  • Suitable for single and multi-layer coatings
  • Utilizes the coulometric principle, a de-plating method conforming to DIN 50 955 and ISO 2177
  • Also suitable for extremely thin coatings from 0.05 microns!


The coulometric or anodic de-plating technique is used for measuring the thickness of electroplated coatings on virtually all substrates such as steel, non-ferrous metals or insulating material bases. Typical applications include: nickel on steel, zinc on steel, tin on copper, silver on copper or copper on epoxy. This technique simply involves the removal of a small, barely visible area of coating material. The substrate is not affected. The coulometric method ensures reliable and exact results. Designed for complete ease of use, GalvanoTest requires no specific operator skills and only minimal training before actual measurements can take place. The coulometric principle is the only low-cost method to measure the individual layers of multi-layer systems, for instance chrome plus nickel plus copper on steel one after the other. Connected to the MiniPrint data printer, GalvanoTest provides complete documentation of measuring results and statistics. For specific measuring analysis or later reference, the characteristic voltage curve during the de-plating process can also be printed out

Measuring principle

Based on the principle of Faraday's law, GalvanoTest performs the electrolytic dissolution of a precisely delimited area of the sample. A measuring cell is filled with an electrolyte specially adapted to the selected coating/base combination. The measuring cell is placed on the test sample. A gasket inserted between the cell and the test sample prevents the solution from running out and at the same time precisely determines the area to be de-plated, e.g. 1 mm. The equipment is now ready to use and can be plugged into the electronic gauge. The current, through the electrolyte, dissolves the predetermined area of coating using an electro-chemical reaction. Once the etching is complete, a characteristic change in voltage automatically stops the deplating process and coating thickness is displayed in microns or mils on the digital display.


The GalvanoTest gauge consists of three major components:

Measuring cell

For measuring on even or curved surfaces up to 3 mm curvature radius, two different measuring cells are available. A measuring cell with circulating pump is connected to GalvanoTest 3000, a cell with air pulsator is con - nected to the 2000 model. The electrolyte is constantly moved around the measuring cell to ensure an even de-plating of the measuring area as well as on optimum use of the electrolyte. For measuring wires or small parts, an electrolyte cup is available to dip the samples into the electrolyte. The electrolyte cup can be used for both models and is available as an option.


The stand serves to hold the test sample in place. It permits the exact positioning of the measuring cell on the test sample.

Processing unit

GalvanoTest is a microprocessor based instrument with interactive LCD. It is suitable for measuring a variety of plating applications. The measuring application can be entered via touch-pad and visualized on a large alpha - numeric display. Various data ports are available to connect GalvanoTest to peripheral units MiniPrint data printer for immediate print-out of readings, statistics and measuring cell voltage curve Electrolyte cup for measuring wires and small parts such as a PC, printer or Y-T recorder. For data transfer, an MSoft 7000 Basic Edition software is available as an option