Abstract: An apparatus for dispensing a flowable material in a predetermined amount includes a metering wheel member for delivery of the flowable material from a supply reservoir to a dispensing port. The apparatus includes an agitator assembly mounted within the supply reservoir to maintain and promote flow of the material to be dispensed. A motive power source is provided to effect rotation of the metering wheel member and agitator assembly within the supply reservoir. Another embodiment further provides a liquid supply system for introducing liquid for rinsing or mixing. The apparatus may be further contained within a cabinet for security and maintenance.