Pipette Filler Bulbs

A standard squeeze bulb suits quick, routine transfers, while a three-way safety filler gives separate valve control for drawing up, holding, and releasing liquid precisely.

A bulb that fits snugly over the pipette's top opening seals properly, giving reliable suction without air leaking around the join.

Standard rubber bulbs handle most aqueous solutions well, but check compatibility before use with strong solvents or aggressive reagents.

Filler bulbs are inexpensive and wear out with heavy use, so it is worth keeping spares on hand for busy teaching labs.

Rubber filler bulbs are one of the most affordable pipetting accessories, with three-way safety fillers priced a little higher for their added control.

Mouth pipetting risks accidental ingestion of chemicals or contaminants. A filler bulb removes that risk entirely while still giving full control over liquid uptake.

Three separate valves control air release, liquid suction, and liquid release, letting you draw up, hold, and dispense liquid with more precision than a simple squeeze bulb.

Yes, rubber bulbs can be rinsed and reused many times, though they should be replaced once the rubber perishes, cracks, or loses its seal.

Bulb sizes are matched to the outer diameter of a pipette's top opening. Check the specific product listing for the pipette sizes each bulb is designed to fit.