There are specific applications that require to transfer of macro volumes (i.e. V > 1 mL) but do not require high accuracy. Mixing cells in a flask, transfer nutrients, aliquot water from a glass bottle are some examples of these situations. Pipet controllers use disposables tips with volume ranging from 1 mL to 50 mL. These consumables can be made of plastic and or glass. Pipette controllers can be manual or electronic devices that provide suction for glass or plastic serological pipettes. The main difference between a pipette and a pipette controller is user decides if the aspirated volume using a pipette controller is expected, while a pipette uses mechanical principles to aspirate/dispense a volume set by the user.