Devices and methods are provided for making a plurality of determinations of the local (site-specific) redox state of a liquid system, by employing a photoresponsive element, which can be independently irradiated at different sites to provide independently detectable signals....http://www.google.fr/patents/US4704353?utm_source=gb-gplus-shareBrevet US4704353 - Photoresponsive redox detection and discrimination
Photoresponsive redox detection and discrimination
