Heavy-duty vortex mixer designed to facilitate hands-free mixing in tubes, flasks, vials or cylinders. Ideal for QuEChERS pesticide analysis method and is instantly adaptable to abroad range of vessels, racks and applications (horizontal or vertical). Oversized motor that delivers accurate, reproducible speeds with rattle-free operation and minimal vibration. Programmable pulsing function llows for time specific interval mixing, increasing agitation.7x12 inch platform accommodates a wide variety of standard, pre-drilled tube racks. Will perform unattended mixing for up to 100 hours. Up to 2500rpm, a true vortex in every tube. Pulsing program for interval mixing. Fits almost any tube rack. Specifications: Speed range: 500 -2500 rpm. Timer: 1 min. to 99 hr. 59 min. Orbit: 3.6mm Weight: 29 lbs./13kg. Dimensions: 15" x 9.2" x 16.5"/38.5cm x 23.5cm x 42cm.