D3.3 - Colorimetric Gas Sensors for the Detection of Am¬monia, Nitrogen Dioxide and Carbon Monoxide: Current Status and Research Trends

J. Wöllenstein, C. Peter, K. Schmitt, J. Courbat & D. Briand
Colorimetric detection of gases has been used for years. Colorimetric gas sensors are based on the change in color of a chemochromic reagent incorporated in a porous matrix. Several products are available on the market, such as the well established Dräger gas tubes. When the gas is sucked in the tube a color change occurs and its concentration can be evaluated with a graduation. The talk will be focused on the state-of-the-art of colorimetric gas...