Sleek ergonomic design and reduced plunger pressure help reduce chance of repetitive strain injury. Each pipette is tested in accordance with standards and a calibration certificate is supplied. Single channel pipettes come with separate tip ejector. Precision metal components for both shaft and barrel ensure reliable performance and long life. Color coded and labeled with volume range (both top and side for quick visual confirmation). Internal metal parts for increased accuracy and calibration stability. Autoclavable. Large digital 3-position volume display. Easy volume adjustment with locking tab to prevent accidental change. Universal tip cone, finger hook.