Philips TuffGuard™ fluorescent lamps meet sustainability requirements because they reduce the impact on the environment with low mercury, energy efficiency and long life.The patented green endcaps mean you're using ALTO low-mercury technology. F32T8/TL850 ALTO Plus/TG - 32 Watt - T8 Linear Fluorescent Tube - 800 Series - Wattage 32 Watt - Base Information: Green Base - Bulb Shape T8 - Bulb Type F32T8 - Base Type Medium Bi-Pin - Color Temperature: 5000 Kelvin - Color Code: TL850 [CCT of 5000K] - CRI 82 - Length: 48 Inch. - Life Hours: 36000 - Lumens Initial: 2850 - Lumens Mean: 2710 - Mercury (Hg) Content: 1.7 mg - Picogram per Lumen Hour: 21 p/LuHr