An apparatus and method for mixing by producing shear and / or
cavitation, and components for the apparatus are disclosed. In one embodiment, the apparatus includes a mixing and / or
cavitation chamber with an element such as an orifice component that is located adjacent the entrance of the
cavitation chamber. The apparatus may further include a blade, such as a knife-like blade, disposed inside the mixing and / or cavitation chamber opposite the orifice component. In one version of such an embodiment, the apparatus is configured to be cleaned in place. The apparatus may, be provided with at least one drain in liquid communication with the
mixing chamber. If the apparatus comprises a blade, the apparatus may further include a blade holder that is movable so that the distance between the tip of the blade and the
discharge of the orifice can be varied. In this or other embodiments, the apparatus is configured to be scalable. In this, or other embodiments, the apparatus is provided with an
injector that is movable so that the distance between the
discharge end of the
injector and the orifice can be adjusted. A process for mixing by producing shear and / or cavitation in a fluid is also contemplated herein.