OXFORD BENCHMATE PIPETTORS 20 ul to 200 ul. Pipettes are autoclavable and do not need to be recalibrated after autoclaving. They are continuously adjustable and highly resistant to chemical agents. Digital display allows for easy volume adjustment. Lightweight, slender design reduces fatigue and the cylinder of the BenchMate is designed to minimize dead air space for increased accuracy. A non-metallic tip ejector provides access to the bottom of most commonly used test tubes and allows for the safe disposal of used pipette tips.