Potassium ferricynide question.

[phritz phantom]

Amm thiosulphate is 'rapid fixer'. It works fine with bleach too - but you will find that the ferri activity is short lasting (yellow colour goes too) and the mix needs topping up with PF as you go along.
Tim

thanks for the answer.
i noticed that before. when the yellow colour turns blue-ish/turquoise, it's exhausted. doesn't take long usually, 10 - 15 minutes for appr. 50ml.

 

[phritz phantom]

another question:
is somebody successfully using pot.ferri bleach with rc-papers?
are paper especially suitable?

i've only tried maco multispeed paper so far and it only responded to very strong solutions and gave a very ugly brown tone.

 

[tim rudman]

another question:
is somebody successfully using pot.ferri bleach with rc-papers?
are paper especially suitable?

i've only tried maco multispeed paper so far and it only responded to very strong solutions and gave a very ugly brown tone.

Any emulsion (containing metallic silver ) will bleach in PF or PF/BR etc.
From a practical point of view I find that for local 'lightening' with 'liquid sunshine' that I get better results with FB than with RC (- but then I rarely use RC.) with less staining, more control etc.
For bleach & redevelop either works well.
Tim