Scilogex MicroPette Semi-Autoclavable 12-Channel Variable Volume 5-50microliter Pipettor is calibrated in accordance with International Standards Organization/Draft International Standard 8655. Volume adjustment selected by turning thumb plunger mechanism. Each Pipettor passes a quality control/calibration test and is supplied with a certificate. Easy to calibrate and maintain with tool supplied. Lightweight and ergonomic design helps avoid repetitive strain injuries. Clear digital display. Integral tip ejector for access into narrow tubes. Individual piston/tip cone assemblies allow easy repair and maintenance; autoclavable tip-cone. Used with 'universal' pipette tips. 3 year warranty. Scilogex #: 71211306.