Re: Correct time for TXT in Rollo on Jobo?

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From: Carl Weese (cweese@earthlink.net)
Date: 12/06/01-08:22:59 AM Z

Tox,

The dilution affects time. 8' is what I worked out for TXT in the
'standard' ABC+ dilution of 15/30/1000. Stronger would be faster, weaker
would be slower. Also, that development is powerful enough to yield
negatives that print in POP (zia) without contrasting agent. If you want
to print 50/50 Pt/Pd, developed out, 6 minutes may be enough. So you
might as well try 7' for starters.

In any case you have to work out your own times for your own equipment
and procedures. Pyro developments show more lab-to-lab variation than
with regular developer formulas. Negatives at any of these times should
print fine on VC silver papers, at somewhere from 1.5 to 3
filtration.---Carl

Tox Gunn wrote:
>
> I've exposed a box of Tri-X at 200, and have a Rollo
> kit to run it through my Jobo. I also have two conflicting
> times to choose from..;) The goal is a set of sheets
> I can contact to 50/50 Pt/Pd w/ small amounts of chlorate,
> and still enlarge onto standard multigrade silver paper..

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