The roller mixers provide a gentle rocking and rolling action. Recommended for mixing blood samples, viscous substances and liquid-solid suspensions where minimum aeration is required. Designed for continuous operation between 4ºC and 60ºC. Both roller mixers are designed for easy cleaning, having plastic rollers and a stainless steel drip tray. Most sizes of tubes, Bijoux, Universals and bottles can be accommodated. For large capacity bottles (up to 120 mm diameter), one or more of the rollers is easily removed to give improved grip. Similarly, it is possible to quickly convert the units to provide a ‘roll only’ action and function as a simple bottle roller. Speed is 33 rpm. Roller size: 340 x 30mm. 120 volt. Amplitude is 16mm.