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Gemesis launches the GMS HU15, its new humidification system for hydrogen testing

27 July 2026 by
Michele Fameni

At Gemesis, we have been developing solutions for fuel cell and electrolyzer testing for several years. Today, we are pleased to announce the launch of the GMS HU15, our new humidification system designed to meet the needs of laboratories and industrial companies developing hydrogen technologies.

The result of several generations of development, the GMS HU15 provides precise control of humidity, temperature, and flow rates on both air and hydrogen lines. Its open architecture allows seamless integration into both new test benches and existing installations.

A solution designed for fuel cell and electrolyzer testing

The performance of a fuel cell or an electrolyzer depends heavily on humidification conditions.

The GMS HU15 has been developed to enable R&D teams and industrial users to accurately reproduce these conditions while ensuring excellent stability of test parameters.

It can operate as a standalone unit or be integrated into a complete test bench controlled by GEMS or any other compatible supervisory system via CAN communication.

Key features

The GMS HU15 offers:

  • Independent humidification of air and hydrogen lines;
  • Air flow rates up to 1,200 Nl/min;
  • Hydrogen flow rates up to 320 Nl/min;
  • A temperature range from 20 to 90°C;
  • Humidity control from 0 to 100% RH;
  • Dew point control from 10 to 90°C;
  • CAN communication, with additional industrial protocols available as an option.

Its compact and mobile design makes it easy to integrate into testing environments while minimizing maintenance requirements.


First delivery to FC Lab

The launch of the GMS HU15 is accompanied by its first installation at FC Lab, a recognized research center specializing in hydrogen technologies.

This delivery builds on the longstanding partnership between Gemesis and FC Lab, following the retrofit of several test benches using the GEMS platform.

The GMS HU15 complements these installations by providing precise control of the humidification conditions required for fuel cell testing.

Read the Case Study




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