Grant bio V-32 vortex mixer provides gentle to vigorous mixing and is fitted with a foam carrier disc drilled with apertures for 16 x 1.5ml, 8 x 0.5ml and 9 x 0.2ml tubes, in addition to a cup for single tubes up to 15ml. With variable speed control from 500 to 3000rpm, 2mm orbit and switchable continuous or touch operation modes where mixing starts when pressure is applied to the top cup. A 12V d.c. power supply allows use in a cold room or incubator. Overall 120 x 180 x 100mm W x D x H. For 220-240V 50/60Hz single phase supplies.