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Old 11-22-2007, 12:38 PM   #1 (permalink)
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Default Metal Halide and UV B & C

Any info on the adverse effect of UV in these BULBS?
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Old 11-22-2007, 01:03 PM   #2 (permalink)
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some/most MH bulbs have a uv protection film on them already. Goggle it


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Old 11-22-2007, 03:29 PM   #3 (permalink)
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All the new Moguls are safe the HQI's need to have a lens to filter the U/V


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Old 11-24-2007, 09:32 AM   #4 (permalink)
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http://www.who.int/ipcs/publications/en/ch_3b.pdf
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