This article is cited in 1 paper

A fiber-optic pH sensor for microbioreactors

C. E. Angarita Lores, E. V. Bogatikov, E. N. Bormontov

Voronezh State University

Abstract: A fiber-optic sensor for microbioreactors was designed and manufactured. It measures pH in the range from 6.5 to 9 with an accuracy of $\pm$ 0.2 for small volumes of liquid. The principle of detection is the measurement of blue and green LEDs light absorption in liquid with an indicator. Phenol red is used as a biocompatible indicator.

Keywords: pH sensor, microbioreactor, phenol red, photodetector with background suppression.

Received: 10.06.2019
Revised: 01.11.2019
Accepted: 05.11.2019

DOI: 10.21883/PJTF.2020.03.48992.17917

 English version: Technical Physics Letters, 2020, 46:2, 141–144

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