Ocean Insight optical oxygen sensors utilize both ruthenium and platinum-based fluorescent molecules whose fluorescence is quenched by the presence of molecular oxygen. We embed these molecules into thin-films that are applied to the tips of fiber optic probes or to peel-and-stick patches for non-invasive measurement.

Oxygen sensor probes are available in designs including slender probes for fine spatial resolution applications to rugged stainless steel probes for robust environments.