Vertical screw dosers for powders, for doses from 5 g to 3 kg (by fitting screws of different diameters). The structure can be opened and is easy to clean and interchangeable, with the possibility of replacing the screw spiral to fit one with the diameter best suited to the required dose and to the type of powder to be dosed. The doser is also equipped with a suction port and an anti-drip device that is activated between one dose and the next.
