Lightweight pipettors are designed for the accurate, precise pipetting of solutions, reagents, acids, serums, and other liquids, and for gel-sequencing applications. Easy swift-set calibration requires no additional tools beyond a balance and distilled water. Adjust volume setting from high to low in one click. Setting wheel locks eliminate accidental volume alteration. Dispensing is accomplished with a single plunger stroke. A differentiated overshoot function and separate push buttons for dispensing and tip ejection reduce dead volume and prevent accidental de-tipping. The glove-friendly JustTip™ adjustable tip ejector allows the use of most pipet tips. The stainless steel and PVDF plunger assembly is chemically resistant. Autoclavable to 121°C (250°F) without disassembly or recalibration.