Culture parameters of the continuous culture of <i>E. coli</i>.

<p>Depicted are dissolved oxygen concentration (<b>A</b>), pH (<b>B</b>) and optical density (<b>C</b>) during the initial stage of the continuous cultivation of the model organism <i>E. coli</i>, including the batch phase after inoculation and the continuous phase indicated by the increasing weight (<b>D</b>) of the depleted medium from the culture. Oxygen concentration and pH in the culture were monitored but not controlled. The dilution rate (D) of the culture was 0.1 h⁻¹. Doubling time of the bacteria was approximately 6.9 hours.