GE Lamps Ecolux Straight T12 linear fluorescent lamp features medium bi-pin G13 base and soda lime glass construction. Lamp contains 5 mg mercury content and 142 pg. Hg per mean lumen hour. It has color temperature rating of 6500 K and life span of 20000 hours to offer its greater applications for a long time. It has current crest factor at 1.7. Linear fluorescent lamp has minimum starting temperature rating of rating of 10 degree Celsius.