• Gentle, orbital-type shaking and vigorous vortexing modes. • Large capacity, multi-vessel vortex mixer holds a variety of vessels from microcentrifuge tubes to Erlenmeyer flasks. • Set speed from 250 to 1000 rpm with a 4 mm diameter orbit. • Gradual speed increase prevents open containers from spilling. • Digital control and display of speed and time. • Timer from 1 to 99 minutes or continuous. • Durable, 25 lb. zinc die-casting will not shift during shaking. • Dimensions: 12.2” x 10.6” x 7.7”. • Racks are included that hold up to 24 tubes (max. dia. 29 mm) or up to six 250 ml flasks. No additional holders or accessories are necessary. • Warranty: 2 years.