Scilogex 713113069999 MicroPette Plus 12-Channel Autoclavable Pipettor, 5-50ul 12-Channel Autoclavable Pipettor Staggered tip ejector for easy tip ejection Head rotates 360° for user comfort Lightweight and ergonomic design Twelve fixed volume MicroPette's in the range. MicroPette's are calibrated in accordance with ISO/DIS 8655. Each pipettor passes a quality control/calibration test and is supplied with a certificate.