The pipette is a volumetric instrument used in chemical science and life and health science laboratories that allows the aliquot of a liquid to be measured with great precision. They are usually made of glass or plastic. It is made up of a transparent tube that ends in one of its conical tips, and has a graduation (a series of engraved marks) with which different volumes are indicated.
Some are graduated or simple, that is, they are flush once to zero milliliters, and then they are allowed to drain to the required volume; in others, the so-called double flush or double gauges, it is made up to the mark or upper gauging and the liquid is allowed to drain carefully until it reaches the lower gauge. Although they have the disadvantage of measuring a fixed volume of liquid, double-gauge pipettes greatly outperform graduated pipettes in that their precision is much higher, since the measured volume is not modified if the tube is broken or deformed. conical tip. In order to suction the liquid with greater precision, the device known as a propipette is used, more than anything else in double-gauge pipettes.
The pipette is used to measure and transfer liquid; It basically works like the volumetric pipette, with the difference that it has the ability to measure different volumes; Of course, this has the disadvantage that intermediate measurements have a lower level of precision.
