In 1999, Princeton University switched to low-mercury fluorescent bulbs. Low-mercury bulbs can be identified by the green tip on the end of the bulb.
Mercury-containing bulbs are considered a Universal Waste when recycled. All components of fluorescent bulbs, including low-mercury bulbs, are recycled or reclaimed by a bulb recycling facility.
Another commonly used mercury-containing lamp is the ultraviolet (UV) germacidal lamps used in the research lab for maintaining sterile surfaces; e.g., interior surfaces of biosafety cabinets.
All mercury-containing lamps are collected by EHS. Requst pick-up of mercury lamps using the Waste Pick-up Request form.