The best UV light for fluorescence in scientific and industrial applications is typically UV-C light with a wavelength range of 200-280 nanometres.

Although UV-C light primarily kills germs and cleans surfaces, it’s also helpful at making certain materials light up under its glow (fluoresce). Fluorescence is particularly useful for scientists and professionals in fields like forensics, where it helps detect substances at crime scenes, and biology, where it aids in observing cellular structures under a microscope.

Additionally, the electronics, pharmaceutical, and food industries utilise UV-C fluorescence in quality control processes to detect product flaws or contaminants.