This line of pipettes is ergonomically designed for comfort and engineered to be lightweight and well balanced—use in either your right or left hand. Large digital display provides enhanced visibility. Chemical-resistant, maintenance-free seals and finely polished pistons provide unsurpassed accuracy sample after sample. Adjustable digital micrometer is slightly recessed to prevent unintentional changes and is protected from the effects of thermal expansion by the insulated pipettor body. The tip ejector is ergonomically positioned to reduce fatigue during prolonged use, is adjustable to accommodate various styles of tips, and is removable for pipetting into narrow tubes. Tip ejector’s stainless steel construction resists corrosion, rust, and breakage. autoclavable.