Micropipettors feature a calibrated series of stops that provide accuracy, speed, and reliability. They offer reliable two-position digital volume selection and an integral tip ejector that is activated by a separate pushbutton. Handpiece rotates 360° for comfort or microtiter plate conformance. Micropipettors also feature a cushioned thumb and finger rest for user comfort during long pipetting sessions. Autoclavable without disassembly or recalibration.