What are O-rings?
On 8-Channel GEN2 pipettes, there is a rubber O-ring wrapped around the outside of each channel. These O-rings help tips form a good seal against the pipette.
Single-channel pipettes and 8-Channel GEN1 pipettes don't have O-rings.
When do I need to replace my pipette's O-rings?
After prolonged use, your pipette's O-rings might wear out. You should replace them if you notice any nicks or tears.
How do I replace O-rings?
You'll need these parts, which came in the box with your 8-Channel GEN2 pipette:
The O-ring removal tool.
The O-ring installation tool.
Remove an old O-ring
Use the removal tool to push on the O-ring from the back. Part of the O-ring will separate from the pipette stem, so you can grab it.
Pull the O-ring out of its groove and off the pipette stem.
Install a new O-ring
Roll a new O-ring onto the installation tool.
Hold the thick end of the installation tool against the bottom of the pipette stem. Roll the O-ring onto the pipette stem and into the groove.