A distribution body for a process fluid for chemical and/or electrolytic surface treatment of a substrate, comprising: - a front face, - a rear face, - at least an inlet, - an outlet array, and - a flow control array, wherein the front face is configured to be directed towards the substrate for the surface treatment of the substrate, wherein the rear face is arranged opposite to the front face, wherein the inlet is configured for an entry of the process fluid into the distribution body, wherein the outlet array comprises several outlets, which are configured for an exit of the process fluid out of the distribution body and towards the substrate, wherein the flow control array is arranged upstream of the outlet array with respect to a flow of the process fluid, and wherein the flow control array comprises several flow control elements which are arranged in a pattern to achieve a turbulent flow of the process fluid towards the outlet array, said elements being pillar shaped elements which extend between the front face and the rear face and are in contact with the front face and the rear face, or alternatively, the flow control elements are in contact with the front face and the rear face but do not extend between the front face and the rear face, instead said elements comprise a first component arranged at the front face and a second component arranged at the rear face, wherein the first and the second components are separate from each other, do not contact each other and are shaped as triangles or hemispheres, and wherein all of the flow control elements are arranged upstream of the outlet array with respect to a flow of the process fluid. - a front face, - a rear face, - at least an inlet, - an outlet array, and - a flow control array, wherein the front face is configured to be directed towards the substrate for the surface treatment of the substrate, wherein the rear face is arranged opposite to the front face, wherein the inlet is configured for an entry of the process fluid into the distribution body, wherein the outlet array comprises several outlets, which are configured for an exit of the process fluid out of the distribution body and towards the substrate, wherein the flow control array is arranged upstream of the outlet array with respect to a flow of the process fluid, and wherein the flow control array comprises several flow control elements which are arranged in a pattern to achieve a turbulent flow of the process fluid towards the outlet array, said elements being pillar shaped elements which extend between the front face and the rear face and are in contact with the front face and the rear face, or alternatively, the flow control elements are in contact with the front face and the rear face but do not extend between the front face and the rear face, instead said elements comprise a first component arranged at the front face and a second component arranged at the rear face, wherein the first and the second components are separate from each other, do not contact each other and are shaped as triangles or hemispheres, and wherein all of the flow control elements are arranged upstream of the outlet array with respect to a flow of the process fluid.