Many tasks in the lab rely on accurate liquid volume measurement using a micropipette.
To keep the pipette accurate it should be stored properly – we’ve taken a look at how pipettes should be stored, and why.
How to store micropipettes in the lab
When they are not in use, pipettes should always be stored;
- Set to the highest volume setting
- Away from heat and moisture
- With pipette tips removed
The simplest way to ensure pipettes are correctly stored is to use a pipette stand.
This means they are always correctly stored in the upright position, but also acts as a base point so all pipettes are in one place – great for finding them quickly, as well as keeping an eye on when re-calibration or repairs are needed.
Why store pipettes upright, at max volume and without tips?
Storing pipettes upright;
- Avoids any liquid still present from running up into the inner workings (which can cause corrosion)
- Avoids piston lubricant inside the pipette barrel from accumulating on one side only.
The pipette tip should always be removed after use to;
- Prevent accidentally using the same tip again, causing cross contamination (pipette tips are always one use only for this reason)
- Removes the risk of liquid being trapped in the tip which could evaporate up into the inner workings of the pipette
It is also wise to set variable volume pipettes to their maximum volume before storage, as in this position the spring inside is in it’s least stressed position.