Alexander N. Willis - Los Altos CA Margers Silarajs - San Jose CA
Assignee:
Ambac Industries, Incorporated - New York NY
International Classification:
G01N 2716 G01N 3300
US Classification:
23232E
Abstract:
A sensor for the quantitative determination of reduction of a gas in which a thin tungsten oxide film detector element includes means for providing a specificity for the gas to be detected with respect to other gases. If ammonia is to be detected, a platinum catalyst is utilized. If hydrogen sulfide is to be detected, tungsten trioxide is used in the film.