When will be the Mercury lamps will be stopped in market?
If you are referring to fluorescent and CFL lamps, it can never be totally eliminated. These are mercury vapor arc lamps using a phosphor to turn the UV to visible light. They have reduced the mercury dramatically, but it can't be totally eliminated.
If all fluorescent and CFL lamps were banned and lighting was all converted to LED then use of mercury could be stopped. However most LED lamps cost at least ten times what CFL lamps cost.
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