Application of the Galvanic Oxygen Electrode for Measuring Respiration and Photosynthesis and the Design of a Portable Meter

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Abstract
A new O2 electrode meter was designed using a galvanic O2 electrode. The current generated by the electrode depended on the O2 concentration in the reaction medium, and the absolute number of O2 molecules was calculated from the current measured in solution containing a known amount of dissolved O2. The electrode is stable, sensitive, responsive, economical and is suitable for measuring O2 utilization in biochemical experiments. A portable version of the same O2 electrode meter was designed for undergraduate use.