Pipettes, also known as chemical droppers, are small glass or plastic tubes used to transfer a measurable amount of liquid in laboratory practices. Our sophisticated pipettes are available in several designs with differing levels of accuracy and precision. Modern pipettes have allowed dispensing amounts of liquid down to about 0.1 μL manually. Pipettes work by creating a partial vacuum above the liquid-holding chamber and then releasing this vacuum to draw the liquid from the solution and then dispense it in another container. Precise and reproducible liquid dispensing is essential for research and diagnostic purposes in medical and molecular biology laboratories.
Over a century ago, Pasteur invented the glass pipette to eliminate the contamination during sample transfer. These pipettes are still in use. In the 1950s, a handheld, piston-operated pipette was introduced as an alternative to potentially dangerous mouth pipetting. Previously, the handheld pipettes had a pre-established volume setting. Then they were further improved to adjust the volume manually. In 1972, Dr. Gilson invented the first continuously adjustable pipette. Since then the pipettes are prominently used in laboratories for research as well as diagnostic purposes because of the accuracy, precision, and reliability.