Reusable glass or disposable polystyrene serological pipettes aspirate and release milliliter liquid amounts using the blow-out method. The narrow tube construction is transparent and may come with or without calibrated graduations in various scales for accurate meniscus measurements. These volumetric transfer instruments come sterile for aseptic cell culturing procedures. Choose between non-plugged or cotton plug options to prevent overfilling. Color-coded for correct size identification, serological pipettes are available in different lengths and capacities.