fluorescents

["Stan Patz" <skp113@xxxxxxxxxxx>]

 >Date: Thu, 25 Mar 1999 18:16:49 -0600
 >From: Ken Sinclair <photo1@xxxxxxxxxxxxxxx>
 
>While there are "tube" filters available for fluorescent lights in >the 
print darkroom, I might hesitate installing fluorescent light in >a 
"film-loading/unloading" darkroom since the tubes continue
>to emit non-visible radiation for a few minutes after they have been 
>turned off.
>If you "must", then be prepared to wait until the tubes have cooled 
>down to ambient temperature before "exposing" the undeveloped film.
 
 Dear Ken,
 
I heard that about "glowing" fluorescents, but I went ahead and
installed two 8' white tubes on my darkroom ceiling. That was 25  years 
ago; no fog yet on any emulsion. My safelights are red-sleeved 4' 
fluorescents, and they also work well.

The only time I had problems was with a red LED digital clock that I
thought would be "safe". Despite the fact that it looked dim, it fogged 
everything!
 
 Stan Patz   NYC
 

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