TriOS Mess- und Datentechnik GmbH is an independent, owner-managed company that was founded in Oldenburg in 1998 and is now headquartered in Rastede. Since then, TriOS has become an established manufacturer of high quality optical measurement technology and one of the leading companies in the field of optical immersion sensors for water treatment. Although the company’s roots lie in radiometry, we have managed to expand our portfolio to include photometry, fluorometry, nephelometry and eChemistry. TriOS offers its customers not only individual measurement sensors, but also complete system solutions for applications in different segments.

The subsidiary in Malaysia was founded in 2023 and serves the Southeast Asia region in particular.