ETHERA develops innovative solutions for measurement and air treatment based on unique chemistry and electronics / instrumentation skills. Ethera has a laboratory, testing and validation facilities with dedicated rooms and an electronic design office. Its products, derived from CEA-CNRS laboratory R & D, are based on nanoporous materials engineering, giving them selectivity and speed, combined with the simplicity of a colorimetric measurement. This technology is integrated into processes and sensors, themselves integrated in connected air analysis stations (IoT) interacting with communication networks (GTC, GTB, Supervisor) or operating autonomously (cloud solution). The developed technology alters and traps the target molecules, which allows a non-release operation and allows the analysis and treatment of priority substances such as formaldehyde (a toxic and carcinogenic compound and the main pollutant of indoor air) in indoor air. or trichloramines in swimming pools (main irritant). The high modularity of the IoT stations coupled with the qualification capacity of the sensors enables Ethera to offer reliable and efficient multi-parameter solutions for many problems. The applications are numerous and ETHERA is evolving in the markets of institutions receiving public, health, safety and quality of life at work as well as the quality of indoor air with Green buildings and Smart buildings.