Discussion:
E6 Chemical Formulas?
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Pier Paolo
2003-08-07 19:21:24 UTC
Permalink
What are the chemical formulas for the E6 process?

First Developer
Reversal Bath
Color Developer
Pre-Bleach
Bleach
Fixer
Final Rinse
Robert Feinman
2003-08-08 15:58:42 UTC
Permalink
Photo Techniques magazine has published equivalent formulas several times.
Contact them for back issues or some of their special publications.
Photographer's Formulary may also sell kits.
Post by Pier Paolo
What are the chemical formulas for the E6 process?
First Developer
Reversal Bath
Color Developer
Pre-Bleach
Bleach
Fixer
Final Rinse
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Robert D Feinman
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Landscapes, Cityscapes, Panoramic Photographs: http://robertdfeinman.com
Pier Paolo
2003-08-14 17:57:39 UTC
Permalink
I've done research of both newsgroups, the web, books, etc. No one has any
answers as to what of all the chemicals and to what amount in Kodak's E6,
Fuji's CR-56, Agfa's AP-44, etc. they are the same. What I am interested in
finding is a formula that does not require flashing the film mid-process,
rather a chemical reversal versus a light reversal.

I'll post the processes I already know here for future reference of people
looking through the newsgroups on the same issue; they are all of the
flashing revesal type.

P.S. I had the wrong email reply-to posted on my last two posts, this post
has correct one.
The responses to my post are helpful but not what I am looking for. I
will
look into the resources mentioned. Buying a premixed chemical kit hasn't
and
Do a google search. Both google groups and google web. The info is
there.
Now I doubt any of these are 100% the kodak formulas. The goal would be to
provide formulas that work right not formulas that are indentical.
Nick
friend
2003-08-15 05:52:52 UTC
Permalink
All of them are equivalent. One day I will create a web page with E6,
C41 etc formulae, but now I am too busy.

E6 Reversal Bath

Propionic acid 12 mL
Stannous chloride anh. SnCl2 - 1.5 g
p-aminophenol 0.5 mg
Nitrilo-NNN-trimethylenephosphonic acid penta-sodium salt 45% 15 mL
water to 1L
pH=5.8

you may try something like this -
hydroxylamine sulfate 0.1g
citric acid 18g
stannous chloride 1.6g
sodium acetate 10g
water to 1 L

adjust pH to 6.0 (NaOH)

I used that bath with other than E6 films with success.

Remember that if pH goes up, you may have some tin salt hydolysed
(while flakes), just filter it, but most of all keep pH right.

On Thu, 14 Aug 2003 12:57:39 -0500, "Pier Paolo"
Post by Pier Paolo
I've done research of both newsgroups, the web, books, etc. No one has any
answers as to what of all the chemicals and to what amount in Kodak's E6,
Fuji's CR-56, Agfa's AP-44, etc. they are the same. What I am interested in
finding is a formula that does not require flashing the film mid-process,
rather a chemical reversal versus a light reversal.
I'll post the processes I already know here for future reference of people
looking through the newsgroups on the same issue; they are all of the
flashing revesal type.
P.S. I had the wrong email reply-to posted on my last two posts, this post
has correct one.
The responses to my post are helpful but not what I am looking for. I
will
look into the resources mentioned. Buying a premixed chemical kit hasn't
and
Do a google search. Both google groups and google web. The info is
there.
Now I doubt any of these are 100% the kodak formulas. The goal would be to
provide formulas that work right not formulas that are indentical.
Nick
Michael Scarpitti
2003-08-15 02:25:42 UTC
Permalink
Post by Pier Paolo
What are the chemical formulas for the E6 process?
First Developer
Reversal Bath
Color Developer
Pre-Bleach
Bleach
Fixer
Final Rinse
You may want to look in the British Journal of Photography Annual
after 1977, though it hardly seems worthwhile to do the mixing of the
formula from raw chemicals (some of which are hard to obtain). It will
also be a challenge to achieve consistency in the weighing and mixing.
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