Designed with superior accuracy and comfort in mind, the precision variable volume pipettors are well-balanced and lightweight. They comfortably fit in the user's left or right hand and have a digital display that's large and visible to users. Exceptional accuracy's achieved due to the maintenance-free, chemically-resistant seals and high-polished pistons. The pipette features a fully adjustable, digital micrometer that's recessed to keep unintentional changes from occurring and has an insulated body to protect it from the effects of thermal expansion. The push button can turn to adjust the volume, and the tip ejector is positioned ergonomically to reduce fatigue from extended use. These pipettors are engineered to provide extreme accuracy and reproducibility and include a handle that's streamlined for superior comfort to users. Many pipette tips can be accommodated by the adjustable ejector, there are two ejector buttons that are interchangeable, and the easy-grip handle makes adjustment and removal quick.