The Benchmark Scientific BV1000-E BenchMixer sets the new standard in vortex mixing. With advanced Q-Drive technology, the BV-1000-E provides smooth instant vortexing of even the largest sample sizes, including full 50ml tubes. The BV 1000 E Benchmixer has a unique counter-balance system creates maximum vortexing action, while minimizing noise and excessive vibration. This results in quieter, more efficient and longer lasting operation. Other features include the "no-walk" suction feet, cold room/incubator compatibility and spill-proof electronic controls.