I have a portable UV lamp Ultralight model #BL-FL, used by jewelers to tell if stones have been "heat treated".
I bought it to use at a large outdoor antique market, to check for flourescent minerals.
It's not bright enough to use outside in the sun,(that's why I'm selling it) but works great inside or on a cloudy day.
Brand new, in the box. Used 1 time, for around 10 mins.
I don't know the wavelength, but it (the bulb's glow) is barely visible in a dark room. However, it lights up every flourescent item in the room like the sun. My guess is close to 380nm (+-) It's much closer to UV then a blacklight! I have compared them side by side.
I have a portable UV lamp Ultralight model #BL-FL, used by jewelers to tell if stones have been "heat treated".
I bought it to use at a large outdoor antique market, to check for flourescent minerals.
It's not bright enough to use outside in the sun,(that's why I'm selling it) but works great inside or on a cloudy day.
Brand new, in the box. Used 1 time, for around 10 mins.
I don't know the wavelength, but it (the bulb's glow) is barely visible in a dark room. However, it lights up every flourescent item in the room like the sun. My guess is close to 380nm (+-) It's much closer to UV then a blacklight! I have compared them side by side.