Portable ultraviolet UV lamp to determine fluorescence Ultra Violet (UV) lamp L 80. Long wave, hand held, portable model for detection of fluorescence of stamps and tagging on currency or phone-cards. 4 Watt efficiency. - Requires 4 AA batteries. Broad spectrum of long waves - Peak efficiency at 366 nm - Reliable detection of luminescence - Suitable for use on most areas. i.e. Canada, Mexico, Norway, France, Hong Kong, Peoples Republic of China, Russia and definitives of Great Britain after 1992.