Abstract: The present invention relates to a process of, and equipment for, thorough mixing of gases and liquids.Equipment in conformity with the invention comprises one or several sequences arranged in same-sense or counter-sense flows, and each in turn comprising: an emulsifier followed by a tapered conduit and an expanding conduit; then, by a pressurized vessel equipped with an exhaust orifice for the liquid and an exhaust orifice for the gas. The gas and the liquid in such a vessel are in contact the moment they are at the maximum pressure reached in the sequence.The invention applies to chemical reactions, to dissolutions and wherever there is significance in achieving intimate contact between a gas and a liquid.