The dynamic method is used to measure kLa in a fermentor operated at 30degC. Data for dissolved-oxygen concentration as a function of time during the re-oxygenation step is given (table with time (s) and CAL (% air saturation)). The equilibrium concentration of oxygen in the broth is 7.9*10^-3kgm^-3. Determine kLa.

Question

The dynamic method is used to measure kLa in a fermentor operated at 30degC.  Data for dissolved-oxygen concentration as a function of time during the re-oxygenation step is given  (table with time (s) and CAL (% air saturation)).  The equilibrium concentration of oxygen in the broth is 7.9*10^-3kgm^-3.  Determine kLa.

-> I know the equation for kLa, but I'm not sure what the CAL (%) corresponds to, or the equilibrium concentration of oxygen.  what is C*AL?  How do I convert DO% to CAL (if that's what the CAL% is)???