https://www.mdhcbiotech.com/matters-needing-attention-in-the-use-of-serological-pipettes.html
Ⅰ. Understand the serological pipette
In the laboratory, serological pipettes are frequently used to transfer liquids in milliliter volumes, ranging from less than 1 milliliter to as high as 50 milliliters. Pipettes can be sterile, disposable, plastic, sterilizable, glass and reusable. For example, serological pipettes can be used to precisely layer reactants of different densities, mix chemical solutions or cell suspensions, transfer liquids between containers, or mix chemical solutions or cell suspensions.