Chemical
Reversal Bath.
This reversal bath may be used
instead
Proprionic Acid.
7 5m1.
of exposure to white light. Rinse film
Stannous Chloride (2H20)
1g.
for half a minute after D.1, then treat film
Sod. Hydroxide.
2.5g.
in the reversal bath for two to three
Water to
500m1.
minutes before washing for two minutes:.
Procedure.
Wash.
D.1
5 & a Half Minutes
My method for washing is to fill
Wash.
See note.
tank, shake for a few seconds, then empty
Reversal by white light. Two minutes each
and repeat. I use a total of four litres
side No. 2 Photoflood (If
chemical
of water which will fill and empty a Durst
reversal see paragraph.above. tank
about 14 or so times.
D 2.
6 Minutes
Wash.
see note.
Bleach/Fix.
10 Minutes.
Wash.
See note.
If
the chemical reversal bath is used, as I know some members dislike the
exposure to light method, the film should be rinsed for a minute before
the Colour developer. If the Bleach/Fix bath is substituted by the
conventional separate Bleach and Fixer baths then a Stop bath must be used
following both developers.
Following
tests after writing the above advise Filtration Of the ‘solutions
“PARTICULARLY - the BLIX. At one stage I had tiny specs of dust-like
clusters or almost the length of the film it Was NOT dust as the film was
perfectly smooth both sides. Soaking didn’t move it, even with gentle
rubbing. Then I found a fine scum-like deposit in the BLIX. After
extensive filtration, followed by a long soak in the same BLIX, the film
cleared.. Obviously minute particles of one of the ingredients had decided
not to go completely into solution. A further tip. The D1used in this
formula will have a cloudy deposit after standing. So shake well before
pouring into tank. It has no adverse effect.
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I must point out, in fairness, that this
formula, and the procedure entailed has
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worked Out
specifically with Konica film. Fuji, at the time of my tests, didn’t
appear to be available anywhere.
==============================
As Ron
explained, he sent me some samples of Konicachrome as processed in this
kit. This proved very well processed and Ron is to be congratulated on
bringing a 3 bath and Chemical reversal formula so quickly Since then ~ton
has sent me a sample of Fuji 3 bath processed and this too appears
to have come off well As Ron says, YOU must experiment first with your own
working methods to sort out any variations you may need to make, The Committee
members at Worcester all agreed that the film was well processed.
Ron
will be pleased to give further advice. Please let us know how you get on,
Your experience and comments will be most welcome.