Figure 5.

(a) Diagram representing the layout of the modified fluorostat culture chamber. The light sensor is time divison multiplexed between light from the absorbance source (600 nm) and fluorescence excited by the excitation source (470 nm). A filter set ensures that only light generated by fluorescence is detected. (b) An IPTG inducible GFP expressing strain of E. coli was grown at OD 0.6 in alternating M9 media with (gray area) and without IPTG.