This BenchMate VM-M Mini Vortex Mixer has a speed range of 2500–4500 rpm for thorough mixing and quick vortexing applications. The vortexing orbital diameter is 4.5 mm for optimal vortexing of solutions in common lab vessels.This mini vortex mixer can be used inside fume hoods and in cold rooms. The unit weighs 0.55 kg. The smart and robust design includes press activation of the vortexing action with a suspension system. The unit delivers a set speed, even under varying load conditions, using microprocessor technology. For added convenience, the BenchMate VM-M Mini Vortex Mixer is equipped with a silicon cup that is easy to clean. The brushless DC motor provides a more robust and powerful performance.