DO NOT AGITATE THIS BATH.
To relate an experience during the Christmas break, A colleague of mine,
a Weekly Newspaper Photographer, asked me if I would process a 120
Ektachrome 200 film as all the Labs were closed for the break and he
wanted the transparencies urgently.
Well I am only geared to 35mm as my Photoworld Kit 7 bath is made up in
200cc bottles and only had enough left of the Reversal and Bleach, Fixer
and Stabiliser in these sizes but, did have two sets of First Developer
and Colour Developer. One set. Partly-used. So I went ahead and used the
Developers as a 400cc unit, which covers the Spiral and Film in the
Thirst 120 size tank. But with only 200cc Chemicals for the rest of the
process I had to continually agitate, by keeping the tank rolling in the
tempered bath. Finally on inspection of the dry film, when viewed on my
light box, all transparencies were perfect. I suppose if I had seen
Bob’s letter first I would have to have given Light Reversal.
Changing the subject now, also over the Christmas period, I have been
printing some 16" x 12” Pearl Cibachromes from 35mm
transparencies, and not wanting to waste paper, I decided to cut one
sheet up for test strips, cutting the sheet in half. I returned half the
sheet to its package (in total darkness) cut the remaining half sheet to
6” x 4” then cut to 2” x 6” strips for test.
Placed the test strip, on enlargement of face and colour and placed in
the Durst 35mm tank and used 20cc of chemicals in the us Cibachrome
instructions, dried and examined and apart from slight adjustments did
the finished enlargement, and results were perfect.
What I am suggesting is you can have up to 16 Test Strips from one sheet
and it seems to me quite an economical way to get the most from your
Chemicals and Paper. I expect one could get away with using less than
20cc from this small tank. But I have never tried it yet.