The most important Hungarian pharmaceutical manufacturer, Richter Gedeon, uses solvents in the production of pharmaceutical products and chemical materials, as well as nitrogen for inerting. Richter wanted to reduce the solvent-contaminated waste gas for the sake of the environment. Successful tests with DuoCondex have shown that emissions can be reduced by cooling the condensers with liquid nitrogen. The solvents that are condensed out are collected in the DuoCondex plant and either recycled or disposed of in a special furnace.