unfiltered florecent light

[PRinspector]

Can someone point me in the right direction? I’m trying to figure out what is the difference between filtered and unfiltered florescent light. I have few photo-luminescent exit signs that requires a minimum of 5 foot candle of unfiltered florescent light at all times that the building is occupy. So my question is where or how can I tell when the florescent light is filtered or unfiltered. I try to look it up in NFPA 70 with not avail. Thanks

 

[cdafd]

Unfiltered Explained: Different kinds of fluorescent light tubes are available. Blacklights, are often used in discos or nightclubs, is one form of fluorescent lighting, but it is coated with a blue-purple color. Such "filtered" fluorescent lighting is NOT acceptable for proper UL924-EXIT sign charge.

On the other hand, many offices use white fluorescent lighting and cover the fixtures with diffusers. Such diffusers more evenly distribute the white fluorescent light in the room. Such diffusers are OK. They are NOT filters and therefore do NOT diminish or change the bright fluorescent wavelength.



Source;;;,

http://www.budgetlighting.com/permalight.html

 

[stookeyfpe]

Your provision is not cited in the US model building codes. Is this a UFC-3-600-1 provision because if it is, you need to be talking to DoD logistics command for these lamps.

 

[PRinspector]

CDAFD, thanks for the link that what I was looking for.

Stookeyfpe, This was a DECA project that was approved by someone else. I know third parties need to comply with the UFC but sometimes things get over look. I just need to know if the diffuser in the light will meet the unfiltered classification. I ran across this site and I got more confused (

http://www.ergomart.com/fluorescent-light-filters/light-filters.htm.)

I don’t like this kind of exit sign especially in warehouse area, I just don’t trust them to provide the proper lighting.