Figure 3

Bioreactors designed and utilized for diffusive oxygen transfer. Controlled oxygen transfer reactor with 10 cm neoprene tubing fixed to stainless steel tubing inserted into a sealed 100 mL serum bottle (A). Infors 500 mL reactor containing 100 cm neoprene tubing fixed to stainless steel outlet ports (B). Infors 500 mL reactor in operation with tubing loops submerged in the cellulose-containing medium (C).