A container provided for the controlled dispensing of powders and liquids which compress,a container body,an extremely threaded neck provided on said container body,a cylindrical, tubular extension member axially connected at one end to the externally threaded container neck,the cylindrical, tubular extension member having an inner base compressing a calibrated portion and terminating at the other end thereof in a divergent frustoconical outlet mouth portion,a rupturable transverse membrane diaphragm scalingly separating the calibrated portion from the outlet mouth portion,a circumferential groove provided on the outer surface of said tubular extension member, in the vicinity of the diaphragm,a cylindrical capsule acting as a scaling and rescaling device, the capsule having at one end thereof an internally threaded portion adapted for screw engagement with the externally threaded neck, andan elastic training ring circumferentially provided on the inner surface of the cylindrical capsule for spring-engagement with said circumferential groove, whereby when the restraining ring is engaged on said circumferential groove, the axial movement of the cylindrical capsule relative to the extremely threaded neck is prevented.