Stratasys J850 Manual page 14

UV lamps used by the printer to cure printing materials contain a small
amount of mercury. In the unlikely event of lamp breakage, avoid inhaling
mercury vapor, and ventilate the room. If the lamp ruptures (breaks) during
operation, leave the room and ventilate it thoroughly for about 30 minutes.
Use protective gloves to prevent contact with mercury and other lamp
components. Carefully remove spilled mercury with a method that prevents
the generation of mercury vapor, such as a syringe, packing tape or paper.
Place the broken lamp, mercury and contaminated materials in an air-tight,
non-metallic container. Dispose of the container in accordance with
applicable regulations.