PASTURE PEPITTE

Pasteur pipettes are also called teat pipettes, droppers, eye droppers and chemical droppers. The Pasteur pipettes are commonly used in laboratories to dispense small amounts of liquid medicines. They are tapered to a narrow opening point at the lower end and fitted with a plastic or rubber bulb at the upper end. The liquid is transferred with the help of a rubber bulb which is fitted on the top of the pipette.

Plastic Pasteur pipettes (or transfer pipettes) have their stems and bulbs in the form of a single piece made of plastic.

It is not recommended to use Pasteur pipettes for work involving accuracy since Pasteur pipettes are not designed to measure specific volume; however, it can be used to add drops of reagents.

To increase accuracy, the pipette is to be rinsed with the reagent.

Generally, Pasteur pipettes are cheap enough to be disposable, however, so long as the glass point is not chipped, the Pasteur pipette may be washed and reused indefinitely.

To use the Pasteur pipette, squeeze the bulb to expel air out of the pipette and submerge the tip of the pipette to the solution. Gently relax the bulb to draw the solution up making sure that the solution does go into the bulb, contaminating it.