Digital shaker with microprocessor control which is ideal for a range mixing applications, e.g. cell cultures, solubility studies and extraction procedures. Variable speed control provides consistent, uniform shaking action. The Accu-drive shaking system delivers exceptional speed control, accuracy, safety and durability; the shaking system continuously monitors shaking speed and will maintain the set point even under changing loads. Displayed speed is accurate to 1% of set speed. The ramping feature slowly increases speed to the set point for added safety. Built-in load sensor can detect an unbalanced condition and will automatically reduce the min?¹ to a safe speed to prevent spills and protect samples. Speed calibration mode allows the user to recalibrate the speed display and RS232 serial port provides two-way communication for data logging and unit control. Two independent LED displays show speed and time Integral timer, 1 s to 160 h, shows elapsed time or counts down, automatic switch-off and audible alarm when programme is complete Can be used at ?10 to +60 °C (maximum 80% relative humidity, non-condensing), in an incubator, CO? incubator or cold room Five year warranty on motor and drive mechanism