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Toning and bleaching questions

AFlood

Member
Allowing Ads
Joined
Aug 27, 2009
Messages
42
Location
Suffolk, UK
Format
Medium Format
Hi folks,

Does it make a difference how long I leave my prints before toning and/or bleaching them. Will I be able to tone with good results even if I have left my prints dry for several days after development, or is this best avoided?

Also, I have a packet of Farmers reducer, which includes a sachet of pot ferri and four sachets of sodium thiosulphate. What is the purpose of the sodium thio, is it just a clearing agent? The mixing instructions confuse me.

Thanks,
Alex
 
The sodium thiosulphate is fixer, it removes the silver that is re-halogenated by the pot. ferri. bleach.

As for drying before toning, so far as I know it's not a problem, especially if you're talking days and not months or years.
 
i have toned prints that are over a year old. they have been kept in a box in a protective environment so they are not damages. In fact i never tone in line. I like to spend a day toning and wait until i have enough prints to keep me busy.

nothing wrong with toning in line, but there are always a variety of ways to do things.
 
I have read that some toning processes are better done after at least a brief waiting time, when the print has been fully dried, not when the print is still wet from the original processing. I have no idea why this should be and wonder if anyone has the technical info on whether it is really true or not and why.
 
The sodium thiosulphate is fixer, it removes the silver
that is re-halogenated by the pot. ferri. bleach.

Farmer's reducer is not a re-halogenating bleach.
Image silver is oxidized becoming silver ferrocyanide.
That is then removed by the fixer. Dan