Methods of and luminescent substances for measuring oxygen concentration of a test fluid. A test fluid is contacted with a plastic film containing a luminescent substance, the luminescent emission intensity of which is quenched in the presence of oxygen. The film is subjected to irradiation by light...http://www.google.es/patents/US5043286?utm_source=gb-gplus-sharePatente US5043286 - Method and sensor for measuring oxygen concentration
Method and sensor for measuring oxygen concentration