Serological pipettes are frequently used in laboratories to transfer liquids. These pipettes come with graduations on the side that help measures the liquid (in milliliters or ml) to be dispensed or aspirated PekyBio's serological pipettes are manufactured from optically clear polystyrene in a class 100,000 cleanroom. Both the pipettes and individual wrappers are color coded for easy volume identification. Available in 1mL, 2mL, 5mL, 10mL, 25mL and 50mL. Peel-to-open plastic/plastic wrappers are the ideal option for eliminating particulate.