Figure 8From: Dual-lifetime referencing (DLR): a powerful method for on-line measurement of internal pH in carrier-bound immobilized biocatalystsPhase drift during DLR induced by photobleaching in three independent experiments. Measurement conditions were: sampling rate, each second; LED intensity, 10%. Incubation conditions were as described for Figure 7, but without cephalosporin C.Back to article page