The basic working principle of colorimetric sensing is colorimetry, which is a visible change in color that results from a chemical interaction between the sensing/detecting material and the target ...

Colorimetrix, a new app developed by researchers at the University of Cambridge (UK), turns any smartphone into a handheld spectrophotometer that can read and deliver results from colorimetric tests.

However, remote or at-home testing introduces various additional logistical and technical issues, such as guaranteeing timely test delivery to a testing user, providing test delivery from a testing ...