"Magic Weapon/Fable" brand jewelry appraisal instrument expert, specializing in the production of jewelry appraisal instruments, this ultraviolet fluorescent lamp is most suitable for jewelry appraisal. ★ Ultraviolet light with wavelengths of ★365nm and 254nm; ★ Set the observation port with magnifying eyepiece; ★ Drawer-type observation of black box can not only achieve the effect of observation in darkroom environment, but also sample conveniently and quickly; In medicine, chemical industry, food, archaeology, public security and other industries, it can be used to detect certain hormones and alkaloids, various fluorescent substances, certain toxins, cultural relics and fossils, steganography and so on.