Argos Technologies V0000 Vortamix Mini Vortexer, US, 3000 rpm The Vortamix is an unbelievably compact, yet powerful instrument engineered to mix tubes quickly and easily The innovative design of the gasket cap allows centrifuge and test tubes up to 30 mm in diameter to be mixed with very little effort  including 50mL conical tubes Despite its small size and weight (dimensions: 95 x 85 mm/weight:.55 kg), the Vortamix offers an excellent mixing speed of 3, 000 rpm