Re: Thomas Duplex Sodium Vapor Safelight

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From: Phillip Murphy (pmurf@bellsouth.net)
Date: 04/06/03-11:53:56 AM Z


Something to keep in mind when doing a coin test for "safe" lights, be
sure that you "flash" the paper or film first to the
inertia point of the material before beginning the coin test. Leaving
this step out is a common mistake.

-Phillip

Gumprint@aol.com wrote:

> In a message dated 4/5/2003 9:00:17 PM Pacific Daylight Time,
> jefulton1@attbi.com writes:
>
>
>> >Dear Group,
>> >Is anyone using the Thomas Duplex safelight for Alternative
>> processes?
>> >I have a small darkroom, 7.5x11 feet, and I've gotten mixed
>> information
>> >about whether it is safe to use in this size room.
>> >I would like to put mine to use.
>> >Any comments.
>> >Thanks in advance,
>> >Don Bryant
>
> I use a Thomas Duplex in a dedicated alt photo darkroom that is 8X10.
> With the doors open on the second notch using the red filters I have
> had no difficulty with Van Dyke, Gums or Cyanotype during processing.
> However, I do not dry the emulsions in that room. I put the papers in
> a completely dark room (or turn out the lights completely).
>
> One more thing, my room is painted semi gloss white so there is a lot
> of light being reflected (no spams here, I just take pitchers) but I
> still have no trouble.
>
> I do agree about the coin test for ANY process in any darkroom. One
> simple test in the beginning of any new emulsion will save a lot of
> hours and head scratching.
>
> Carole


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