Ultraviolet lamps or commonly known as germicidal lamps, are low pressure mercury vapour lamps which produce ultraviolet light at 254nm , which is lethal to microorganisms and pathogens. Ultraviolet light is generated by an electrical discharge through low pressure inert gases and mercury vapour within the special quartz tube of the lamp. Approximately 95% of the UV light from the lamps are at the wavelength of 254nm, which is the region of maximum bactericidal effectiveness. 254nm effects the DNA of the pathogen so it cannot replicate.
UV Lamp Lifetime
Typical lifetimes of a fused quartz ultraviolet UV lamp are in excess of 9000 hours and up to 16000 hours for long life amalgam and high output ultraviolet UV lamps. Lamp lifetime is dependent on the running conditions, temperature of the fluid, how often the lamps are swithc on and off.
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