BioPette are precision pipettes built with a finger hook to provide exceptional comfort while using an easy single-hand operation. The product is lightweight and well-balanced and could fit the user's left or right hand comfortably. It offers truly low plunger forces, as well. Its finely polished pistons and maintenance-free, chemically resistant seals provide its users with undeniable accuracy with each sample. Its digital micrometer can continually be adjusted and slightly recessed with its volume lock to avoid pipetting changes unintentionally. The device's volume can be adjusted by just a turn of the push-button to promote convenience. The BioPette's tip ejector is ergonomically positioned to reduce fatigue when used over a long period of time. These pipettes come with a universal shaft which allow most pipette tips. The tip ejector, which is made of stainless steel, is adjustable to accommodate different tip styles and can be removed to allow for pipetting in narrower tubes. These products are fully autoclavable with eight models available covering the volume range of 0.1 ?l to 10,000 ?l. A calibration tool is also included.