Process waste gases are induced through a maximum of six separate inlets. Depending on the chemical composition of the waste gases, various reactions take place (oxidation, reduction, pyrolysis). A fluid wall/film prevents corrosion and deposition of particles in the reactor. In the washing column next to the reactor, soluble components are absorbed and particles suspended. The scrubbing liquid cools down and neutralises combustion products such as hydrogen halides. With the application of UPTIMUM within a holistic abatement concepts, manufacturers in the high-tech industry will meet the strict standards of the German air pollution law (TA Luft).