Mercury vapor lamps have mercury in them, which has a clear arc tube, which you can see the electrodes and the starting electrode. The arc tube itself is made out of quarts. Mercury vapor lamps need to be on a mercury vapor ballast/transformer, in ANSI of "H" with the number next to it, like for example: "H39" means 175 watt mercury vapor.
Avalible in different watts.Edit
- 50 watt
- 75 watt
- 80 watt
- 100 watt
- 150 watt
- 175 watt
- 250 watt
- 400 watt
- 1000 watt
Now Mercury Vapor Fixtures are banned, but not the bulbs, they are for extisting fixtures that are still out there.
Clear bulbs have a sky blue color of mercury vapor, for phosored ones light 6500K or lower or higher.
Once they burn out, the arc tube will be black, and electrodes wear out, and will not make an arc anymore.