Rubber bulb

Rubber bulbs are used in chemistry laboratories, by placing them on top of a glass or plastic tube.

These rubber bulbs will complement larger pipettes and plastic rods, as the glass will easily break due to uneven pressure distribution.

They are very commonly used for droppers as small sized rubber bulbs help control the amount of drops more precisely.

[3] The plastic wheel style pump help reduce the amount of work done by the users, as there are no squeezing involved.

The liquid is drawn up by use of wheel movement and can be easily released by using the lever.