All CEMS required by EPA use optical methods such as Non-Dispersive Infrared (NDIR), Fourier Transform Infrared (FTIR) or Ultraviolet (UV). MonitorTech has developed a disruptive technology that uses inexpensive and reliable Fuel Cells or Electro-Chemical Cells. These cells are disposable and screw into a cabinet manifold light light bulbs. Fuel cell gas analyzers can be installed for about half the price of optical systems.