Specifications:

UV Lamp(Black Light Bulb, uv fluorescent lamps, Purple Light)
1) Watt: 15W/20W/23W
2) Bulb type: Spiral or 3U (12mm).
3) base: E27, E26, B22

4) Wavelength: 365nm
5) Can radiate ultraviolet rays that make white fabrics fluorescent
6) Used for medical and pharmaceutical industries, photochemical reaction, jewelry and historical relics verification, special stage effect, note detection
7) CE, Rohs, UL, ISO9001 approved.