Ensure a secure seal for every sample. Thermo Scientific™ ClipTip™ Pipette Tips provide a secure seal for every sample with a unique and innovative interlocking technology that ensures a complete seal on every channel with minimal tip attachment and ejection force. Achieve newfound confidence knowing that once attached, your tips are locked firmly in place, and will not loosen or fall off regardless of application pressure. The innovative three interlocking clip design ensures the tip is held securely on the F1-ClipTip and E1-ClipTip pipettes until — and only until — it is released.