An apparatus configured for the mixing of two fluids traveling in substantially perpendicular directions. The apparatus includes a cylindrical member including a longitudinal conduit. The member also includes at least one diffusing plate. The diffusing plate includes a surface with a larger area and a surface with a smaller area. The larger area surface includes a plurality of apertures. The bore directs one of the fluids onto the larger area of the diffusing plate and through the apertures. The smaller surface of the diffusing plate is orientated in the direction of travel of the second fluid.