A New Phosphorimeter for the Measurement of Oxygen Pressures Using PD-Porphine Phosphorescence

There is a growing demand for quantitative and rapid determination of low oxygen concentrations in biological samples. The application of oxygen electrodes has so far proven to be the most successful. The use of electrodes, however, is limited by the stability of the electrode surface and diffusion barrier. Furthermore, the electrodes consume oxygen which introduces artifacts at low oxygen pressures.