Unlike air displacement pipettes, favourable displacement pipettes, for example Corning Stage-R™ Repeating Pipettors, do not use air force for liquid shipping and delivery. Instead, these pipette pistons sit in a very disposable syringe. The syringe guarantees the pipette isn't prone to external variables, including temperature or air pressure. Human problems, https://kameronnsssn.nizarblog.com/29540713/the-5-second-trick-for-different-types-of-pipette