Abstract: A device for localized containment of extraneous material at and in the vicinity of the interface between a material receiving body (e.g., a reaction vessel) and a material dispensing body (e.g., a powder bin). The device includes a containment chamber and a ventilation system for ventilating the interior of the containment chamber whereby extraneous material at and in the vicinity of the interface between the material receiving body and the material dispensing body is transported to a remote location.