Lightweight, battery-powered unit designed to be used with microcentrifuge tubes. Centrifugal pellets, precipitates and other solids are compley dispersed in seconds by a combination of mechanical and vortex action. A new polypropylene pestle is used with each sample. A practical alternative to a conventional vortex mixer for mixing and dispersing samples, the BioVortexer is faster, less tedious, and safer. Take the BioVortexer to the sample instead of the sample to the mixer. Two AA batteries required and included.