I ended my initial post ended with the words “Just curious really.” - having read the above and again the James piece I am now concerned or even in a bit of a panic. I am just coming to the end of a 25 print project and now wonder if all the prints are badly compromised. My washes consisted of 4 x 1m 30 sec washes in the citric acid/salt water; does that mean that all the excess silver and salt are locked in the paper and unlikely to be released?
My only possible saviour might be that instead of giving just 1 minute of 10% hypo as James suggests, all my prints have had 2 x 3 minute fixes in 10% hypo., then sodium sulfite and full wash.
Might that go some way in nullifying the salt wash predicament I find myself in? Or have I got a full re-print to do?
What is the reason for putting the print in salt water?
What is the reason for putting the print in salt water?
Just to repeat – I am not a chemist, obviously!
From what you say Niranjan, doesn’t the first fix do the necessary conversion to silver sulfide which is then removed by the fresh second fix? (That is sort of what I thought was the idea for having 2 baths). Or is this where the use of a later salt bath, pre-fix, supposedly does the job?
I’m not getting any obvious stain anywhere but my concern was long term effects from my process using salt baths – which now seem dubious. I have made test pieces of normal coated paper and then put them through varying processes - first washes with acid /without acid, 5 x 10 minute final sloshing trays /full ‘archival’ Nova washing, with/without salt.
Once dry I put spots of neat KRST from the bottle on the papers, left them for 10 minutes then washed them. To varying degrees they all have stains on them, one was very feint but it is still there. I have run out of thiocarbamide for sepia tone.
I know salt prints are notoriously difficult to get right but as this is likely to be a historical project for the long term, as close to archival is where I am aiming. I am binding the final prints into a book so in general, daylight will not get them but internal chemicals might/will.
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