SEARCH Articles Figures Tables HI shows some data on dispersion of nitrogen flowing through a similar microreactor filled with particles of typical fixed-bed catalysts, at a gas hourly space velocity notwithstanding the rather low space velocity, the short bed, and the fact that the catalyst of practical size had not been diluted. Hence, it can be concluded that with gaseous reactants a microflow reactor of the present dimensions can be considered to be a sufficiently close approximation of an ideal plug flow reactor for most practical cases of catalyst testing. [Publishers Imprint]