The EVT-3000 is a general purpose mixer for applications that demand vigorous and uniform vortexing. Variable analog speed control of 200 to 3200 rpm (±25 rpm) with low rpm start-up allows gradual, gentle shaking of samples. The unit may be operated in continuous or "touch" mode. Rubber feet and a heavy base ensure that the unit won´t "walk-away" during use. A cup head and a 3" dimpled platform are included with each unit.