Woods Lamps are Portable comes with Twin ultra Violet tubes to induce fluorescence in Dermatoses and an additional extra white tube for Magnification. Both the lights can be operated separately.
Woods lamp is inexpensive and essential laboratory equipment.
It should be performed in a dark room & total darkness is also satisfactory.
The UV light tubes are commercially available and the emitted light is of lesser intensity (longer wave length) than the light absorbed.