“Universal” tips are designed to fit many different pipettes, but never designed to fit any one pipette perfectly. On any pipette when a tip seals at a different place on the nozzle, the total amount of air in the tip is altered. This can cause the pipette’s performance to differ from its published specifications. Using a “one-size-fits all” tip can affect ease of use and performance.
VistaLab pipettes are calibrated to VistaLab tips. Ovation pipettes are designed to make the pipette “click” when tips are properly loaded eliminating the need for excessive force and “jamming.” You’ll never worry about tips falling off! In addition, when tips aren’t jammed on, they are easier to eject, which is more ergonomic.
For optimal performance:
1) The tip should be sealed properly. The seal area should be the entire side wall of the tip, from the bottom of the nozzle to the top lip of the tip. If the tips are not sealed, there could be leakage and contamination.
2) The tip should not extend too far up the nozzle or be too small to fit onto the nozzle. Either situation affects tip ejection, which is also not ergonomic.