Mini Vortex Mixer, 5600rpm, Four E's Scientific Lab Vortex Shaker with USB Interface for Charging, Touch Function, 6mm Orbital Diameter, Strong Mixing Capacity : Amazon.sg: Industrial & Scientific
Mini Lab Vortex Mixer, speed control button function, used for color, quick and even mixing of test tubes and science laboratory clinic classrooms
4E's Scientific Laboratory Vortex Mixer
Vortex Mixer, VM-96A | Apex Scientific South Africa