Advances in high-performance sensor materials and optoelectronics have enabled optical sensors for use in markets including the life sciences, environmental, food and beverage, process control and biotechnology. Compared with traditional electrochemical sensing techniques such as galvanic, paramagnetic and fuel cell sensors, these optical sensors can be made in small and customizable form factors such as probes and self-adhesive patches. The sensors also have fast response, provide long-term stability and are chemically inert. This experiment demonstrates the viability of optical sensors for non-intrusive monitoring of both pH and oxygen in a bioreactor environment.
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