|Caffenol Strong + 1:60 fixer|
Next time I raised the dilution to 1:30 and, accidentally, I did not wash very well between developer and fixer. I got images like this:
|Caffenol Strong + 1:30 fixer, bad wash in between|
So, I did another experiment, keeping the dilution and film and washing very well between developer and fixer.
|Caffenol Strong + 1:30 dilution and a 15min. wash in between|
Analizing with an enlarging lens the film, I could see that these points were a kind of grains that could be cleaned out with a soft cloth, giving then:
|The same as above + cleaning with soft cloth|
Observations: For the films I used until now, Fomapan 100 and Ilford FP4, a 1:30 solution of the liquid concentrated fixer (Fomafix) needs one hour to fix, i.e., half an hour to clear.