Abstract: Apparatus for filling syringe barrels (1) with a product (A, B), includes at least one vacuum unit, at least one filling device, and a metering head (10) which can be moved with respect to the syringe barrel (1). The metering head (10) has a first material inlet valve (11a) and a second material inlet valve (11b) as well as a first vacuum valve (20a) and a second vacuum valve (20b). The material inlet valves (11a, 11b) and the vacuum valves (20a, 20b) are connected to channels (25a, 25b), to each of which a chamber (2a, 2b) of the syringe barrels (1) can be connected, as a result of which the syringe barrel (1) can be filled through the same openings (5a, 5b) as those through which the product (A, B) can be forced out of the chambers (2a, 2b) by pistons (3) for use of the product, where the pistons (3) are inserted into the syringe barrels (1) before the barrels are filled.