Z368105 Sigma Eppendorf® Research® pipette, adjustable volume volume 10-100 μL
 
 
Sigma-Aldrich
If you prefer a separate tip ejector button, choose the Series 2100. Easy-turn volume adjustment moves quickly through the volume range and won't snag gloves. Integrated ejector sleeve allows access to narrow vessels. Lower section is autoclavable. Ultra-micro models have shielded piston to protect against damage.