In advance I apologize if it a little off the point, but it was always interesting to me why ultraviolet lamps are more expensive at 5-10 time regular
UV lamps have capacity from 100 to 800 W, in case of useful service life to 16 thousand hours. These light sources represent amalgamny lamps of low pressure. Characteristic of such UF of lamps is the high efficiency of generation of bactericidal radiation. Besides, such UF of a lamp don't contain some free mercury.