The Stuart SA7 vortex mixer from Bibby Scientific provides rapid mixing of liquids in test tubes, small flasks etc. With a fixed speed rotation of 2500rpm, a low-profile, robust, die-cast body and integral retort rod fixing. Mixing commences when the flexible cup is depressed. Overall 135 x 215 x 78mm W x D x H. Weight 3.2kg. For 90-240V 50/60Hz single phase supplies.