New Mineral Named After GIA’s John Koivula
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 Post subject: GIA UV Lamps
PostPosted: Thu Oct 25, 2018 12:37 pm 
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i want to buy both Long & Short Wave UV Lamps for GIA Viewing Cabinet Set
https://store.gia.edu/UV-Lamps-MaxiLabs ... 600000.htm
https://store.gia.edu/UV-Lamps-MaxiLabs ... 604000.htm

i just realized i can get something similar from Amazon, here are the ones i have found:

https://www.amazon.com/Philips-TUV-4W-G ... dpSrc=srch

https://www.amazon.com/Eiko-F4T5-BL-Lig ... dpSrc=srch
or
https://www.amazon.com/EIKO-F4T5-BLB-Bl ... dpSrc=srch

what do you guys think? which one from Amazon should i get?

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 Post subject: Re: GIA UV Lamps
PostPosted: Thu Oct 25, 2018 12:53 pm 
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When I needed some new bulbs....everything blew at once, I did a google search for what was written on the bulb.
Found every one for pennies on the GIA dollar!
Gene (G4Lab) also has a great source for bulbs.


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 Post subject: Re: GIA UV Lamps
PostPosted: Sat Oct 27, 2018 1:38 pm 
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Call Bulbtronics and ask for Leetzi:
https://www.bulbtronics.com/

The clear one has UV transmitting glass for germicidal use. It will give you a sunburn much faster than you would imagine. Keeping it a luminaire or wearing safety goggles is not a bad idea with these if they are nekkid. The UV filter to eliminate the visible light comes in a longwave and shorter wave version. The shortwave version is very expensive and difficult to find. I would be skeptical about its presence in a cheap UV source.

The white one is the same as above but with a fluorescent coating formulated to emit in the mid and/or longwave. It also needs a filter to eliminate the magenta visible glow.

The BLB with the blue jacket has a tube made of woods glass and emits longwave but not too much short wave so it can be used without additional filtration. If you use it with additional filtration you get a little less UV but you also can have truly invisible "black" light (more correctly known as UV radiation)


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 Post subject: Re: GIA UV Lamps
PostPosted: Sat Oct 27, 2018 2:54 pm 
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Right!
Bulbtronics is where I got the replacements.


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 Post subject: Re: GIA UV Lamps
PostPosted: Sat Oct 27, 2018 4:58 pm 
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thank you Gene i will give them a call

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