Welcome to the Fideris website.  Fideris Brand testing equipment, manufactured by TesSol, Inc., represents the most innovative testing solutions for the research and production evaluation of fuel cells, catalysts, sensor testing.  TesSol is your partner for Testing Solutions and the Fideris product line of fuel cell, catalyst, sensor, and materials test equipment is the most capable and versatile in the world.  TesSol, Inc., does not have ongoing fuel cell or catalyst research efforts, so your technology stays your technology - without the possibility of your technology or information bleeding over into someone else's research programs.

Above all else, we help customers solve complex R&D challenges, assess and validate product performance, maximize research productivity, and lower operating costs.

Our leading-edge test equipment, software, components, and services are offered as off-the-shelf and/or custom solutions - addressing many test industries including sensor testing, materials testing, catalyst evaluation, and fuel cell testing.  Our equipment is used around the world on fuel cells and subsystems of all sizes (from 1 Watt to more than 100 kW), all chemistries (PEMFC, SOFC, DMFC), all types (micro, small, large), and many fuels (hydrogen, diesel, natural gas, gasoline, reformate, etc.).

Enjoy and thank you for visiting our website, please contact us if you have any questions !