High-pressure sodium lamp has very long life

Greenstock
Greenstock now offers a long-life high-pressure-sodium lamp from Aura. It has a 48 000 h life, based on a 12 h switching life. Light output is said to be 22% higher than standard SON lamps at 147 lm/W, with a 15% depreciation over its life.
For more information on this story, click here: April 08, 107
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