Fluorescent lamp can give off Ultraviolet ray of a peak wavelength of 365nm. Usage: photo oxidation,attracting fishes and insects, police work like inspection, identification,and examination of paper money,and medical treatment etc. Type: T8,T9,T10,T12,T5 Watta: 4W,6W,8W,12W,13W,10W,15W,20W,30W,40W