Abstract: A container-dispenser for particles such as tablets for medical use consists of a chamber with a rotary floor, a cone-like protrusion in the center of the floor causing spreading of the particles in the chamber, an aperture in the floor which a predetermined quantity of the particles may enter and travel along in the chamber, and a fixed diaphragm below the floor with an aperture which registers with the aperture in the floor in one position of the floor. The particles pass in this position of register into the diaphragm and thence into a receiver, preferably a spiral chute. An apertured disc may be provided below the diaphragm to rotate with the floor, its aperture being out of register with that in the floor, to ensure complete consistency of delivery.