Tip Acquisition The user inserts the pipette’s nozzle into a tip and lightly presses down until an audible "click" is heard. No excessive force or jamming is required to ensure a good seal.      Aspirating & Dispensing A very low-force, form-fitting plunger allows the user to manually control the speed of aspirating and dispensing with minimal contact or thumb effort.      Liquid Blocking Disposable Nozzle Not every pipetting task requires a filtered tip, but every pipette should be protected from contamination no matter what the task. Ovation comes with a filtered nozzle that won’t let liquid into the body of the device.      Tip Ejection A low-force energy release button activates Ovation’s tip ejector. A gentle push is all that’s needed, ensuring that the forces needed to discard a tip are well below threshold levels recommended by ergonomists.