Abstract: Equipment to transfer powder from a drum into a tank comprising at least one handling device and one hopper assembly (T) connected to a tank (4). The handling device comprises a hollow cylindrical body intended to surround a drum (2) and to immobilise it to enable it to be turned upside-down, where the drum (2) is open and the powder is contained in at least one sealed bag. The hopper assembly (T) comprises a hopper (60) and a sealed enclosure (62) installed on the upstream end of the hopper, where said enclosure (62) comprises an aperture to enable the hollow cylindrical body loaded with the drum (2) and of the sack of powder to enter, and then, after removal of the hollow cylindrical body loaded with the empty drum (2), to be closed, and to allow the bag to be opened to allow the powder to flow into the hopper (60).