A static mixer for mixing together at least two components comprising: - a mixer housing ; - a mixing element having an upstream end with at least two entry openings and a downstream end , the mixing element being arranged at least partly within the mixer housing ; - a mixing head having at least two inlets provided at an input side and at least two outlets provided at an output surface , wherein each of the at least two inlets is in fluid communication with one of the at least two outlets ; and - a separating wall disposed between the output surface and the upstream end of the mixing element for separating the components leaving the outlets , wherein the separating wall comprises a free downstream edge which is disposed with respect to at least one of the entry openings so as to allow at least partial flows of the components separated by the separating wall to combine after exceeding the downstream edge and to jointly enter said at least one of the entry openings , wherein the separating wall has a meandering pattern, such that the components when reaching the downstream edge are arranged side by side in three partial flows (A1, B1, B2) in a plane perpendicular to a longitudinal axis (A L ) of the static mixer , characterized in that the static mixer further comprises: - an intermediate wall traversing the separating wall such that the intermediate wall transversely divides the three partial flows (A1, B1, B2) that exceed the downstream edge of the separating wall such that six partial flows (A1 1 , A1 2 , B1 1 , B1 2 , B2 1 , B2 2 ) result. - a mixer housing ; - a mixing element having an upstream end with at least two entry openings and a downstream end , the mixing element being arranged at least partly within the mixer housing ; - a mixing head having at least two inlets provided at an input side and at least two outlets provided at an output surface , wherein each of the at least two inlets is in fluid communication with one of the at least two outlets ; and - a separating wall disposed between the output surface and the upstream end of the mixing element for separating the components leaving the outlets , wherein the separating wall comprises a free downstream edge which is disposed with respect to at least one of the entry openings so as to allow at least partial flows of the components separated by the separating wall to combine after exceeding the downstream edge and to jointly enter said at least one of the entry openings , wherein the separating wall has a meandering pattern, such that the components when reaching the downstream edge are arranged side by side in three partial flows (A1, B1, B2) in a plane perpendicular to a longitudinal axis (A L ) of the static mixer , characterized in that the static mixer further comprises: - an intermediate wall traversing the separating wall such that the intermediate wall transversely divides the three partial flows (A1, B1, B2) that exceed the downstream edge of the separating wall such that six partial flows (A1 1 , A1 2 , B1 1 , B1 2 , B2 1 , B2 2 ) result. - an intermediate wall traversing the separating wall such that the intermediate wall transversely divides the three partial flows (A1, B1, B2) that exceed the downstream edge of the separating wall such that six partial flows (A1 1 , A1 2 , B1 1 , B1 2 , B2 1 , B2 2 ) result. <EOS>