UV photo rig with 365 nm flashlights

Description

Green coffee that fluoresces under 365 nm light is telling you about how it was dried and stored. The rig holds the flashlight and the phone in a fixed position over the sample, so every UV photo is lit and framed the same way and results compare from one day to the next.

UV flashlights are USB-C rechargeable.

Safety: never look into the flashlight or point it at anyone’s eyes.