Quick Answer: A fast releaser pipette pump is a hand-held pipette filler in which a thumbwheel raises or lowers liquid in the pipette, and a quick-release lever empties it at once. It replaces mouth pipetting with safe, one-handed control.
Thumbwheel Control With a Quick Release
The listing image shows pump bodies in blue, green and red, each with a soft chuck at one end, a thumbwheel on top and a release lever. The pipette’s upper end is pushed gently into the chuck. Turning the thumbwheel one way draws a piston back and lifts the liquid; turning it the other way lowers the liquid to the mark. Pressing the lever vents the pump so the pipette drains straight away, which is what the “fast releaser” name refers to.
Pumps of this pattern are made in sizes for different pipette capacities, and the body colour usually shows which size a pump suits. The image filename mentions 25 ml, but the title does not state a size. Check that the pump matches the pipettes you use, since a pipette that is too narrow will not seal and one that is too wide will not enter the chuck.
Thumbwheel pumps are slower to fill than a rubber bulb but far more controlled when setting a meniscus on the line, which is why they are preferred for graduated pipettes and for class titration work while students are still learning technique.
Applications
- Filling volumetric pipettes to the mark for acid-base titrations
- Delivering measured volumes from graduated pipettes in a dilution series
- Replacing mouth pipetting in school and college labs
- Handling mildly hazardous solutions where a rubber bulb gives too little control
Specifications
| Item | Thumbwheel pipette pump with quick-release lever |
| Operation | Thumbwheel to fill and set the level; lever to release |
| Fits | Graduated and volumetric pipettes of the matching size |
| Colours | Pump bodies shown in blue, green and red in the listing image |
| Pipette size range | Confirm at enquiry |
Care & Handling
- Insert the pipette with a gentle twist, holding it near the top, to avoid snapping the glass.
- Never draw liquid into the pump itself; if it happens, flush and dry the pump before further use.
- Keep the pipette pointing down while it holds liquid, and never lay the filled assembly tip-up.
- Wipe the chuck and body with a damp cloth rather than immersing the pump.
Why Choose LabEquip
Schools and colleges that have stopped mouth pipetting need a pump at every titration station, usually in two or three sizes. LabEquip lists this pump in its chemistry lab equipment range; tell us your pipette sizes through the contact page.
Frequently Asked Questions
Why use a pipette pump instead of mouth pipetting?
Mouth pipetting risks swallowing or inhaling the solution and is prohibited in most laboratories. A pump gives equal or better control of the meniscus without any contact between the user and the liquid.
How is the pipette fitted into the pump?
Hold the pipette near its upper end and push it gently into the soft chuck with a slight twist until it seals. Forcing it, or holding it far down the stem, can snap the glass and cause a cut.
What does the release lever do?
It vents the pump so the pipette empties freely. Use it to deliver the full contents of a volumetric pipette quickly, or to empty the pipette to waste before refilling.
Do the different colours mean different sizes?
In most pump ranges the body colour indicates the pipette capacity the pump is made for. Match the pump to your pipettes, since the chuck must seal on the pipette’s top end.
What should I do if liquid enters the pump?
Detach the pipette, expel the liquid and rinse the chuck with water, then let the pump dry fully before use. Liquid inside can damage the piston seal and contaminate the next pipette.
Can the pump be used with plastic pipettes?
Yes, if the top end of the plastic pipette is the right diameter to seal in the chuck. Plastic serological pipettes are often used with pumps or electronic pipette controllers.
Last Updated: September 2026
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