Spun-out from Michigan State University, Opti O2 LLC is a technology company developing improved sensors for detecting dissolved oxygen: an optical dissolved oxygen (DO) sensor probe system that is designed to provide 24/7 measurement of water quality in soil, aquatic and marine environments. Anchored in use of a patent-pending sensing film, the Opti O2 sensor probe system provides validated and reliable measurements, with the advantage of multi-site monitoring capabilities using a scaleable network of probes and with reduced post-deployment maintenance costs. Target markets for the Opti O2 sensor include: environmental monitoring; waste water processors and watershed authorities; and, aquaculture.