Lightweight and easy to use!The RF1000™ is a manual pipette controller and 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 blowout bulb to expel any liquid remaining in the pipette. Tapered silicon pipette adapter allows a large range of pipette sizes and makes to be used. Replaceable when worn Accepts common, and readily available replacement filters unlike other pipette aids whose filters are custom. This will help reduce total cost of ownership over time Includes a magnetic/wall mountable holder and 0.45 μm filter Overall dimensions 180 x 45 x 120 mm