(2/2: Testing) Westinghouse 400W Mercury Vapor Coated Bulb. @THEBULBHOME
(2/2: Testing) Westinghouse 400W Mercury Vapor Coated Bulb.  @THEBULBHOME
Uploaded December 2014 | Updated September 2026, 48 minutes ago
Watch the introduction of this bulb: youtube.com/watch?v=fa6UmjksURo&list=UUu4ArqLE88esAbHHtunVpZg
So I proved the bulb and it do work! It's old, and it have been used for a lot of hours before, I mean it has the arc tube pretty deep blackened. But surprisingly, it still puts an incredibly amount of light, perhaps is just the good quality of old Westinghouse bulbs! This is an excellent bulb, however in the other hand, the phosphorus coating don't work like it is supposed to (the light given is still really green) but it's an old bulb and it had work a lot before, so I don't really care about it, I just love the way this bulb is.
Anyway the light output is bright, smooth, and a strange combination between green, yellow and white.
Hope you like the video!
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(2/2: Testing) Westinghouse 400W Mercury Vapor Coated Bulb.

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