is a glass tube used for the delivery of a measured quantity of liquids. There are two kinds of pipettes, a kind with a bulbous middle section that has a single mark for the quantitative delivery of a single volume of liquid each time, and another that has many graduated marks, much like a graduated cylinder
, that can deliver moderately accurate volumes (to within a few percent) of liquids in variable amounts.
A pipette used for the delivery of small fractions of a milliliter of liquid is called a micropipette. Many methods are employed in measuring small amounts of liquids but air deplacement is the most popular.
Rainin (a division of Mettler Toledo) is the world's largest developer & supplier of Pipettes.
See also: laboratory glassware, chemistry