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Martechnic is Granted European Patent for Its Innovative Test Device "MT COOLANT CHECK"

2025-12-12

Martechnic is Granted European Patent for Its Innovative Test Device "MT COOLANT CHECK"

Martechnic is delighted to announce that its test device "MT COOLANT CHECK" has recently been granted a patent for utilizing an innovative measurement method to determine the remaining corrosion protection of the engine coolant directly on site. 

Our invention is registered under the Patent Number EP4332358 at the European Patent Office (EPO).

The patented technology of the "MT COOLANT CHECK" covers an environmentally friendly, chemical-free and sustainable approach to evaluating water-based engine coolants running just one single test.

The test device uses an electrotechnical apparatus with constant (corrosion resistant) and working/changeable (corrosion-prone) electrodes that are subjected to corrosion stress in a simulated engine cooling system.  The performance of the engine coolant is characterized in relation to its existing level of corrosion protection on the metals used in the cooling system.

All the evaluation is carried out fully automatically, delivering results in just 20 minutes. The remaining corrosion protection of the engine coolant in use is determined with a new unit of measurement: Lagner (lag).

After the measurement, the "MT COOLANT CHECK" offers precise and timely maintenance recommendations. In case the determined anti-corrosive effect of the engine coolant in use is insufficient, the dosing rate of the chemical additive to be added will be automatically calculated. In this way, the test device helps to avoid unnecessary coolant changes and wastage.

Easily recyclable electrodes with no shelf-life limitations contribute to waste reduction, minimizing environmental risks, especially to marine ecosystems, thereby marking a significant stride towards sustainable predictive maintenance in the maritime industry.

The siginificant advantage of our technical solution is that it is applicable for analyzing different coolant formulations regardless of the coolant additive composition or manufacturer. 

The recently issued patent for the test device "MT COOLANT CHECK" adds to Martechnic’s intellectual property portfolio that includes the test device "TOTAL IRON CHECK" and the water-in-oil sensor technology "AHHOI IR".