This manual pipette filler is uniquely designed for one-handed operation. Simply squeeze the main bulb and push the toggle forward to aspirate or back to dispense. Push the blow-outbulb to expel any liquid remaining in the pipette. The Rota-Filler 1000 accommodates graduated or volumetric pipettes (glass or plastic) and can be used with volumes ranging from 1 mL to 100 mL. Suitable for use in extreme temperatures such as cold or hot environments that can damage expensive mechanical pipettors. Pipettor includes hydrophobic .45 um filter and magnetic holder for metal surface mount or wall mount. Polypropylene nozzle is autoclavable. Overall dimensions are 7" x 1.75" x 4.75".