Fig. 2.

The effects of biofilm thickness and age on red fluorescence, biofilm grown on Teflon. (a) Example of one CDFF pan per time point (screw thread for pan removal covered), (b) different depth settings of the plugs. (c) Intensity of red fluorescence (peak amplitudes for the different peak wavelengths within the red area of the spectrum) in arbitrary units per biofilm thickness. (d) Intensity of red fluorescence (peak amplitudes for the different peak wavelengths within the red area of the spectrum) in arbitrary units per biofilm age.