Mercury Vapour 125 Watt 220V E27(ES) HID Elliptical Lamp

A mercury-vapor lamp is a gas-discharge lamp that uses an electric arc through vaporized mercury to produce light.The arc discharge is generally confined to a small fused quartz arc tube mounted within a larger soda lime or borosilicate glass bulb.The outer bulb may be clear or coated with a phosphor; in either case, the outer bulb provides thermal insulation, protection from the ultraviolet radiation the light produces, and a convenient mounting for the fused quartz arc tube. Mercury vapor lamps are more energy efficient than incandescent lamps with luminous efficacies of 35 to 55 lumens/watt.Their other advantages are a long bulb lifetime in the range of 24,000 hours and a high intensity, clear white light output.

warm-up period of four to seven minutes to reach full light output.