The Thermolyne Maxi-Mix II vortex mixer with interchangeable mixing surface for cup or flat surface mixing. Large, 31/2" diameter soft rubber pad has firm grip surface that handles multi-tube, small flask, or separatory funnels. Converts easily for conventional single tube mixing by replacing rubber pad with mixing cup (not included). Three-position control switches to off, continuous mixing, or touch-on operations. Unit incorporates a full range speed control from very slow to vigorous to match your special mixing needs. Durable metal base with acid/alkaline-resistant plastic case. Foam rubber feet prevent "walking."

Now sold under Thermo Scientific: Maxi Mix® II.