Manual single-channel pipettes are laboratory tools used to accurately measure and transfer small volumes of liquid. They are commonly used in medical, chemical, biological and pharmaceutical research and testing. Pipettes consist of a calibrated tube and piston mechanism to aspirate and dispense liquids via disposable or fixed tip. They are made of plastic and metal components and operated manually, electronically or robotically. Pipettes enable precise liquid measurement and transfer for experiments, assays, drug discovery and diagnostic testing performed in laboratories.