A system and method enabling a portable electronic device to perform fluorescent measurements are provided. The system can comprise a case that houses one or more Light Emitting Diodes and an optical filter. The system can further comprise a push button, a microcontroller and a power source. The system can cause excitation of fluorescent molecules in environmental, biological, and chemical samples, as well as in fluorescent molecules located in or on a tissue of an organism. The disclosed methods and systems also allow for the capture of images of fluorescence through the portable electronic device.
DENSITY ANALYSIS OS LIVING ORGANISMS BY MAGNETIC LEVITATION