Graduated pipette




Graduated pipettes commonly come in 5, 10, 25 and 50 mL volumes. To avoid accidental ingestion of potentially harmful substances, a variety of propipetters have been developed, both entirely manual and electrically assisted:
Originally pipettes were made of soda-lime glass, but currently many are made of borosilicate glass; disposable graduated pipettes are often made of polystyrene. Graduated pipettes are often graduated in one of two ways: