The Vornado Mini Vortex Mixer from Health Care Logistics instantly vortexes samples, including nearly full 50-mL tubes, using a 4-mm orbit and fixed speed of 2800 rpm. The unit has a compact footprint, measuring less than 4 x 4 inches, and insta-touch operation enables the motor to be automatically activated with slight pressure on the center cup head. When pressure is removed, the unit immediately stops. Operation is smooth, quiet, and efficient. Its head design stops liquids from entering the housing, helping to prolong the motor life. It is available in 5 cup head colors: gray, blue, red, green, and purple.