BrandTech 2704782 Transferpette S Single Channel Adjustable Pipette, 0.5-5&micro;L Volume Adjustable single-channel micropipette with a thumb-operated manual volume selector for transporting a measured volume of liquid Four-digit display with white numbers on a black background indicates the selected volume Short pipetting stroke helps minimize thumb muscle activity One-handed operation for setting and locking the volume, pressing the plunger, and ejecting the tip Fully autoclavable for decontamination and sterilization