The VWR digital vortex mixer is designed for gentle shaking or vigorous vortexing of samples in a wide variety of applications. Use with flasks, beakers, tubes, and micro well plates. Constructed using a heavy base casting with corrosion-resistant enamel finish, units remain stable on work surfaces. The variable speed vortex mixers are designed for variable speed mixing for vigorous vortexing of samples up to 3000 rpm.