Draft tubes

Draft tubes in bioreactors are internal structures designed to improve mixing and circulation within the vessel. They function by channeling the flow of the culture medium and gas bubbles, enhancing mass transfer and reducing dead zones. This leads to a more uniform distribution of nutrients, temperature, and cells, which is crucial for optimal cell growth and product formation.

Draft tubes are commonly used in airlift bioreactors, where they help maintain consistent flow patterns and improve overall efficiency of the bioprocess.