MH Mogul bulbs & UV lens question

[Stpatrick]

Hi Friends. If you are running a 250 watt radium about 12" AWL do you need a piece of tempered/UV glass? Or can you run the open pendant?

Thank you

 

[Stpatrick]

Hi Friends. If you are running a 250 watt radium about 12" AWL do you need a piece of tempered/UV glass? Or can you run the open pendant?

Thank you

I think I found me answer. Can anyone confirm?

"What I was wondering: I have a 250 Watt HQI bulb, do I need to use a lens to filter out UV rays? or is this optional? Thanks, Eugene. <AdamC here. Thanks for the kind words! Ordinary glass blocks UV, but quartz glass does not. Although it is not technically correct, HQI has become synonymous with "double ended". All double ended lamps require UV shielding because the outer cover is quartz and does not block UV. All double ended fixtures should include an ordinary glass cover which will safely block the UV. Single ended lamps are build with ordinary glass, so they don't require shielding. Best Regards! AdamC.>"