The Minipet® Pipettor is a convenient, labor-saving repetitive pipettor. To operate, simply put the filling tube in a container, depress the Teflon® plunger to deliver and release to aspirate. Twisting the knob above controls the self-locking feature to confirm accurate dispensing reproducibility. The filling tube can be lengthened for extended reach, increasing its versatility. Teflon® Minipet® Pipettors are highly chemical-resistant and can be used with almost any solvent or acid (with the exception of HF). Liquids only contact the borosilicate glass and Teflon®.