Abstract: There is provided a two-compartment container. A lower mixing compartment has a closure which seals that compartment, and the upper end of an upper compartment is disposed in the closure and communicates through the closure to an aperture therein. A lower slideable seal in the lower end of the upper compartment effects a seal between the two compartments. That seal is exitable from the upper compartment by means of a digitally powered linking means projecting from the aperture, whereby the contents of the upper compartment are dispersed into the contents of the lower compartment. The lower seal quickly exits from the upper compartment and the contents impinge upon the lower seal and deflect therefrom to more uniformly disperse into the lower compartment.