Caffenol first time ???

[joho]

Had tried Caffenol first time, But roll 120 FomaPan 100asa as is __came out with color cast ??
the tint is purple--[deep] --but with the exposures in very good overall tone curve.
temp 26cel.
8,5 min -9,5 min
wash - fix

will upload a sample

just a quick idea as to the purple tint ????
did not use table salt or any thing as retardant...

 

[RalphLambrecht]

Had tried Caffenol first time, But roll 120 FomaPan 100asa as is __came out with color cast ??
the tint is purple--[deep] --but with the exposures in very good overall tone curve.
temp 26cel.
8,5 min -9,5 min
wash - fix

will upload a sample

just a quick idea as to the purple tint ????
did not use table salt or any thing as retardant...

It's most likely the left over of the film's anti-halation layer. The good news is: it's harmless, and if you use a pre-wash, a washing aid bath or an extended final wash next time, it will be gone because that washes it out. You may have noticed a pink tint when you poured out the developer or fixer. That was part of it.

 

[loccdor]

Not many people do this, but I like 5-7 agitated prewashes before I start a development, and like Ralph says, you'll notice that different films have all sorts of different colors that come off them during this stage.

 

[joho]

As this is the first time - I used caffenol - so asking
I did a dry run with with out pre-wash -for the green anti-halation layer.
just asking anyone with that gas had problems like this ??? too much of coffee ? [instant] too much S.carbonate? too much Asorbic acid??
in the att. see the out come-

 

[koraks]

the film's anti-halation layer

That's green on fomapan 100, not magenta/pink, and washes out very easily.

You may have noticed a pink tint when you poured out the developer or fixer.

Ilford, Kodak etc - yes. Fomapan, no. No pink.

IDK what this is. Caffenol can stain, but I've never seen it stain this strong or in this color. Looks as if red wine was used instead of coffee...that does give a result similar to this.

Maybe try and wash those negatives again. Add some sulfite to the first wash water, let it soak for 5 minutes or so. Then wash some more.
Or just embrace it. It's kind of a nice color. Frame the negatives as they are.

 

[Pioneer]

No big deal. Just needs more washing. Keep washing until the purple or blue is gone.

 

[Andrew O'Neill]

Most likely the colour is uncleared AH or other layers. I found that it's due to developers lacking in Sodium Sulphite. I just soak the film longer in water, and apply HCA.

 

[Donald Qualls]

Caffenol can produce staining (especially if you use a formula that lacks ascorbate) that can even mimic a color negative. I have a roll of scans of 35 mm Tri-X (from 2003) that I scanned as color and look very much like 2-color Technicolor -- reds and greens and their combinations, but no blues. As others have noted, the antihalation in 120 Fomapan is bright blue/teal when it pours out, and I've never seen it stay in the film -- but I haven't developed Fomapan in a while; it may have changed. A combination of the reddish/brown stain from Caffenol and a tiny bit of residual blue AH would give a purple tone.

Alternatively, could you have gotten a T-Max in place of Fomapan by mistake? Those are famous for pink base, especially if fix in non-rapid fixer. Ilford XP2 Super also has a pink cast, and develops fine in B&W developers (I haven't tried it in Caffenol, however, so I don't know what staining effects it might get).

 

[joho]

From curiosity I did a snip test from the end part of the film.
I used iodine solution to see if the removal of residual silver or emulsion -
well the iodine [lightly added ] redeveloped the unexposed part of the tab see bottom left -
where as a full load of some drops eliminated the emulsion to clear film base !! and the tint still persists !
???? strange that the iodine redeveloped and gone was the tint.
As I was writing this I just saw D-Qualls post, and to A O'Neill -that S.Sulphite would help ---or salt ????