Two main approaches are commonly used.

In many horizontal tubular systems, the culture is regulated (pH, temperature …) in a buffer tank, then sent into the tubes for photosynthesis.

This regulation works in a semi-continuous way :
– The culture is not regulated during the entire cycle
– Cells spend time outside controlled conditions in the tubes
– Residence time within the tubes becomes a key parameter to manage

On the other hand, in vertical tubular systems with airlift, like our SALT technology, regulation is directly integrated into the growth chamber :
– pH, temperature and gas exchange are controlled continuously
– No need for buffer tank, so no split volume
– Cells remain in stable conditions at all times
– Residence time is no longer a constraint.

The culture is then more stable, more reproducible, and performs better over time !

Contact us to know more about it !