Re: Pyro and gloves

Richard Sullivan (richsul@roadrunner.com)
Tue, 27 Jan 1998 15:28:47 -0700

Knoppow sas:
> It seems to me (not a chemist} that anything which reduces the effects of
>oxidation will also reduce the staining. There are a great many Pyro
>formulas in the literature, including several called "non-staining"
>containing large amounts of Sulfite. There was some effort during the era
>of silent movies to devise non-staining and long life oxidation resistant
>Pyro developers for use with the rack-and-tank development method common
>then.

Right Dick. The stain factor goes way overboard. The idea is to give it
just enough vitamin C to bring the oxidation back in line with that which
you'd get with tray development. In the Jobo the stuff exhausts itself. I
think XTOL is nothing more than an MQ or PQ developer doped with Vitamin C
to cut the aerial oxidation factor. I'm gonna give it a go tommorrow in
fake Jobo. We could use rose hips instead, and make it big with the
back-to-nature crowd. The Gypsy Boots Mega Developer.

--Dick Sullivan

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