Das Lehrgebiet BioVT publiziert in der Zeitschrift "Sensors" den Artikel “Portuino – A novel portable low-cost Arduino-based photo- and fluorimeter”.

A novel portable low-cost Arduino-controlled photo- and fluorimeter for on-site measurements has been developed. The device uses LEDs as light source and a phototransistor as a light sensor. The circuit is based on the discharge of a capacitor with the photocurrent from the phototransistor. Validation experiments for absorbance measurements were performed by measuring protein using the Bradford method, and phosphate ions in water using a commercial test kit. The emission light of the excited fluorescent dyes rhodamine 6G and calcofluor white was measured to validate the usability of the device as fluorescence photometer. In all validation experiments, similar correlation coefficients could be achieved with the portable photo- and fluorimeter, compared with a laboratory spectrometer and fluorimeter, respectively.

S. Di Nonno, R. Ulber; Portuino – A novel portable low-cost Arduino-based photo- and fluorimeter; Sensors (2022) https://www.mdpi.com/1424-8220/22/20/7916/pdf