The invention relates to a mixer 11 for dispensing a multi-component material comprising:- a first inlet 14a, 14b for at least a first component A, B of the multi-component material；- a mixing tube 18；- a compartment 21 a, 21 b for at least a second component C of the multi-component material；- a duct 25a, 25b that establishes a fluid communication between the inlet and the compartment, wherein- the duct forms a first exit 20a, 20b into the mixing tube and- the compartment forms a second exit 22a, 22b into the mixing tube.
