"Lloyd Erlick" <Lloyd at @[EMAIL PROTECTED]
dot com> wrote in
message news:s0c4h3hj61fr04lmgt2b9obvj3ieg4ibog@[EMAIL PROTECTED]
> October 14, 2007, from Lloyd Erlick,
>
> Some time ago I posted about a darkroom
> material called Colorine bulb dipping paint,
> made by Rosco, the company that makes gels
> and color filters. It comes in many colors,
> and is meant to paint light bulbs specific
> colors.
>
> The color I liked was number 27, safelight
> red. I bought a little can, twenty bucks for
> a half pint, and coated a number of small
> light bulbs.
>
> I've been very slow to actually test any of
> these, and I've only placed them distant from
> photosensitive materials so far.
>
> Yesterday I did the simple 'CD darkroom
> safelight test' on them. I held a CD under a
> safelight, room lights off, and observed the
> light reflected from the surface. There was a
> definite blue component. Lights that have
> proved safe reflect no blue light.
>
> I realize the test is not definitive (in the
> case of a light that seems safe and reflects
> no blue) but as far as I am concerned these
> lights are not safe and I'm not bothering
> with painting light bulbs any more. It's
> possible they need a second or third coat,
> but I'm not sniffing that stuff any more just
> to see if it works, and I'm sorry I brought
> it up.
>
> regards,
> --le
Colored bulbs have always been suspect although those
sold as "ruby" lamps, with colored glass envelopes are
better. I still use Kodak "beehive" safelights. They need to
be checked occasionally since the filters can fade. Both
Kodak and Ilford have procedures posted on their websites
for testing, I think the Kodak one is called Publication
K-4.
The beehive and also the large, square, safelight lamps
show up used quite often, usually at pretty low prices.
I prefer the OC type safelight to red ones although red
safelights are probaby "safer".
--
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Richard Knoppow
Los Angeles, CA, USA
dickburk@[EMAIL PROTECTED]
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