System to divide liposuction fat into aliquots, comprising taking means (2, 3) to take from a container a quantity of adipose material, made available by means of liposuction, and to preserve sealed the quantity taken, said taking means (2, 3) comprise a taking syringe connected to a taking needle able to perforate the receptacles which contain adipose material sealed under vacuum, said system being characterized in that it also comprises: at least a separation syringe able to be put in communication with said taking means (2, 3), and able to contain at least a portion of said quantity, said separation syringe being provided so as to separate, by gravity, the fat from the aqueous fluids composing the adipose material; first connection means to put in sealed communication said taking means (2, 3) with said separation syringe; at least a rejection container, able to be put in communication with said separation syringe so as to receive said aqueous fluids, following their ejection from said separation syringe; at least a syringe device (7, 8) able to be put in sealed communication with said separation syringe so as to receive an aliquot of fat, following its ejection from said separation syringe, said syringe device (7, 8) being able to contain sealed and to inject fat to make infiltrations; and second connection means able to put in sealed communication alternately said separation syringe and said rejection container or said separation syringe and said syringe device (7, 8), said syringe device (7, 8) comprising attachment means connectable in a removable manner to said second connection means, where said syringe device (7, 8) comprises at least a receptacle and at least an infiltration syringe, connected sealed to one another, and is connectable in a removable manner to said second connection means to define, as a result of their filling with fat, a portable unit to contain and to inject an aliquot of fat. at least a separation syringe able to be put in communication with said taking means (2, 3), and able to contain at least a portion of said quantity, said separation syringe being provided so as to separate, by gravity, the fat from the aqueous fluids composing the adipose material; first connection means to put in sealed communication said taking means (2, 3) with said separation syringe; at least a rejection container, able to be put in communication with said separation syringe so as to receive said aqueous fluids, following their ejection from said separation syringe; at least a syringe device (7, 8) able to be put in sealed communication with said separation syringe so as to receive an aliquot of fat, following its ejection from said separation syringe, said syringe device (7, 8) being able to contain sealed and to inject fat to make infiltrations; and second connection means able to put in sealed communication alternately said separation syringe and said rejection container or said separation syringe and said syringe device (7, 8), said syringe device (7, 8) comprising attachment means connectable in a removable manner to said second connection means, where said syringe device (7, 8) comprises at least a receptacle and at least an infiltration syringe, connected sealed to one another, and is connectable in a removable manner to said second connection means to define, as a result of their filling with fat, a portable unit to contain and to inject an aliquot of fat.