About TriOS

With TriOS, Xylem offers one of the leading brands in optical measurement technology for water analysis. The company specializes in advanced optical immersion sensors for waste water treatment and water quality monitoring. TriOS is recognized worldwide for its high-precision measurement solutions, reliable sensor technology, and innovative approaches to demanding monitoring applications.
The TriOS portfolio includes state-of-the-art photometers, fluorometers, and precision sensors for the continuous measurement of parameters such as COD, TOC, nitrate, and turbidity. These solutions are used across the drinking water, wastewater, environmental, and industrial sectors, helping customers achieve efficient and reliable water quality monitoring.
Since July 2026, TriOS has been part of Xylem (NYSE: XYL), a global Fortune 500 water technology company committed to helping customers and communities build a more water-secure world.