Re: [Leica] help pls - tech pan dev. advise?

["Dan Post" <dwpost@email.msn.com>]

Tahnks for the info- I'll see what shakes out. Sounds like an opportunity to
play mad scientist and mix up some chemicals. If you see a low, dull glow on
the horizon one night, figure I failed....   :)
Dan'l
dwpost@msn.com
- -----Original Message-----
From: TTAbrahams <TTAbrahams@aol.com>
To: leica-users@mejac.palo-alto.ca.us <leica-users@mejac.palo-alto.ca.us>
Date: Saturday, January 10, 1998 1:51 AM
Subject: Re: [Leica] help pls - tech pan dev. advise?

>Dan. the divided D-76 doesn't work on the tech-pan. At least the times I
have
>tried it out it gave me REALLY thin negs and even by extending the times it
>did not work.
>Tech-Pan is a strange film and requires different procedures than most
other
>thin emulsion films.
> The divided D-76 works very well on older, thicker emulsions like the
Tri-X,
>PlusX and even on Neopan 1600, but I suspect there isn't enough absorbtion
of
>the A bath into the film to allow the B bath to activate it in the newer
thin-
>emulsion T-grain films.. I use it as one of my standards for Tri-X, it does
>compensate nicely for excess contrast and you cant overdevelop the film
>either. It is also really cheap, you are looking at a 10 cents/roll with
it.
>The A bath last a long time, it is depleted by the 5-7 ml that is soaked
into
>the film, and the Borax is available in your local drugstore as " 20 Mule-
>team" Borax from Death valley,CA. Even in low value Can$ it is $3,99 for 5
>lbs. Thats enough to do about 65 litres of B bath or about 200 rolls!
> You should try the Tech-Pan, it is a great film. For the first run I would
>use the Kodak Technidol and establish the film for you and then start
playing
>with other developers.
> Tom A