https://youtu.be/HYAChB_BiSQ ? Tank007 UV340 Mini UV Flashlight Black Light Antigen Reagent Testing Lamp Fluorescence Immunochromatography Detection Blacklight Lamp Small UV LED Ultraviolet Light UV340 is a lightweight, portable and easy-to-operate UV flashlight for reagent fluorescence detection. Radiation intensity at close distance reaches more than 207000uW/cm2, with good visual effect; Finger size and weight of only two coins , two basic colors of black and white and offer?color customization, Freely adapted to a variety of UV fluorescent reagent kits; Powered by a AAA battery, designed with a mechanical touch switch, specially designed for convenient detection. This is an?exquisite, accurate and [...]