ArticleSensors (Basel, Switzerland)2022
Portuino-A Novel Portable Low-Cost Arduino-Based Photo- and Fluorimeter.
Article in Sensors (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
7 citing papers in PubMed, 13 citations in OpenAlex.
- LED-Based Photometric Systems for Decentralized Chemical Analysis: Applications, Design Considerations, and Practical Limitations.Sensors (Basel, Switzerland) · 2026Review
- Low-Cost Optical Sensing for Nitrate and Phosphate: Advancing Community Freshwater Monitoring.ACS ES&T water · 2025Article
- A modular fluorescent camera unit for wound imaging.Communications biology · 2025Article
- Modular "Plug-and-Play" Photometer Based on IoT Digital Light Sensors: A DIY Approach for In Situ Analysis.ACS omega · 2025Article
- Open Meter Duo: Low-Cost Instrument for Fluorimetric Determination of Cholinesterase Activity.Sensors (Basel, Switzerland) · 2024Article
- Affordable Portable Platform for Classic Photometry and Low-Cost Determination of Cholinesterase Activity.Biosensors · 2023Article
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors at 1 institution in 1 country.
Funding
Abstract
A novel portable low-cost Arduino-controlled photo- and fluorimeter for on-site measurements has been developed. The device uses LEDs as a 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 concentration using the Bradford method and measuring 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 a fluorescence photometer. In all validation experiments, similar correlation coefficients and limit of detection could be achieved with the portable photo- and fluorimeter and a laboratory spectrometer and fluorimeter. Real sample analysis was performed, measuring phosphate concentration in freshwater and concentration of green fluorescent protein, extracted from
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.