Serological Pipettes is a great choice for daily lab work. Serological Pipets may be used to aspirate and dispense liquids within a volume range of 0.1 mL to 50 mL. Bold, clear bi-directional graduations make it easy-to-read fluid volumes and dispensing amounts. Color-coding for easy identification of pipet sizes. Serological Pipets are single-use serological pipettes made of ultraclear plastic. With precise and easy-to-read graduations, they are designed to quickly aspirate and dispense liquids using mechanical or electronic pipette controllers.