Abstract: A continuous dynamic mixing assembly includes a mixing chamber having an inner wall which is generally symmetrical about a central axis. At least one first fluid inlet introduces first fluid material into the mixing chamber. At least one second fluid inlet introduces second fluid material into the mixing chamber. At least one outlet permits fluid to leave the mixing chamber. First baffles extend along the inner wall generally parallel to the axis for disrupting fluid flow generally circumferentially in the mixing chamber. Second baffles extend generally transverse to the axis for disrupting fluid flow generally axially in the mixing chamber. A rotatable agitator includes a cylindrical central portion extending in the mixing chamber along the axis and has at least one blade having a twisted orientation on the central portion. A relative construction and arrangement among the first baffles, the second baffles and the agitator enable residence time of fluid in the reactor to be selectively adjusted.