Ball refining is one of the chocolate micronization techniques. Mixing arms of the ball mill are made of special material which subsequently heat-treated. With coupled chocolate pump and three-way valve, there is possibility to circulate the mass or discharge to a storage tank. RBM25, RBM50 and RBM100 are with build-in cooling. They are designed for artisans and small work shops. LabBM10 is designed for laboratory use, product development or educational use. Machines without build-in cooling are equipped with solenoid valve which automatically opens gate of cold water flow and ensures cooling of the equipment. External source can be from tap, tower or a chiller.