Figure 13. Left: Photomultiplier in a housing that protects against stray light directly above the SPE cell, right: potentiostat

From

Rapid and Sensitive Electrochemical, Spectroscopic and Spectroelectrochemical Detection of Glyphosate and Glufosinate and Their Copper Salts with Screen-printed Electrodes

F. Wetzel, T. Braun, T. Schindler, A. Habekost

World Journal of Chemical Education. 2021, 9(4), 152-162 doi:10.12691/wjce-9-4-8