The document discusses a presentation given by Adrian Mahlkow from OUT e.V. at the Acqueau Workshop on September 16, 2015 in Paris. It provides information about OUT e.V., including that it is an external research institution founded in 1991 with about 40 employees and 2.5 million Euros in annual turnover. It also describes OUT e.V.'s work on developing a bio optical sensor for detecting single bacteria in water using a glass prism and LED technology, as well as developing a high-power UV-LED emitter system.