Chemical analysis based on colour changes recorded with imaging devices is gaining
increasing interest. This is due to its several significant advantages, such as simplicity of …

In this work, an Android application for measurement of nitrite concentration and pH
determination in combination with a low-cost paper-based microfluidic device is presented …

For most natural or naturally-derived liquid products, their color reflects on their quality and
occasionally affects customer preferences. To date, there are a few subjective and objective …

Soil colour has been determined in most cases by using Munsell soil-colour charts,
sometimes with spectrometers, and occasionally with digital cameras. The objective here is …

The precise determination of the colour of oils and fats is a common and important
parameter for the production of oils, fats, margarine, and mayonnaise. A new method has …

Abstract Headspace-Mass Spectrometry (HS-MS), Fourier Transform Mid-Infrared
spectroscopy (FT-MIR) and UV-Visible spectrophotometry (UV–vis) instrumental responses …

In this study, a low-cost RGB sensor is developed to measure online the microalgae
concentration within a photo-bioreactor. Two commercially available devices, ie, a …

Egypt is among the world's largest producers of sugarcane. This crop is of great economic
importance in the country, as it serves as a primary source of sugar, a vital strategic material …

Spectrophotometry and colorimetry are among the most-used techniques for chemical and
biological analyses, but the required equipment is often expensive and restricted to …

The use of computer vision for estimating composition in food products has become wide
spread in recent years, especially for products where by measuring colour or other spectral …