Re-Washing Fiber-based paper

Hi, Folka,

I'm sure this question has come up in the past, but I've not been able to find where it has.

Recently I noticed the image of a fiber-based print I created about 2 years ago has begun to change as if it had not been washed thoroughly. I've only been using fiber-based paper for about that long and fear my washing technique has been insufficient. For instance--I've never used a wash aid before and just washed the prints for a very long time in running water.

My question is: can I rewash recent prints after they have dried and hanging for a couple of months, or is it too late? I'm hoping I can just get them wet, wash in a wash-aid and wash in water for the regular time and will possibly be able to avoid the trouble I described above. Is this possible?

Also--as a wash aid I'm planning to use a tablespoon of sodium sulfite to a liter of water. I've seen where people suggest using a little sodium carbonate as well. Also I've seen where people suggest using baking soda, although I'm not sure about ratios to water. What is the best approach here? I'm using Ilford rapid fixer if that is important.

Thanks!

Sean

You can always rewash photographic materials, but the changes you already see will most likely remain. The second wash will at least prevent further image deterioration.

About the HCA: from a technical standpoint, the best compound for this purpose is Sodium Sulfite. Depending on where exactly you are located, this is not always easily available, therefore people used all kinds of compounds like Sodium Carbonate, Sodium Bicarbonate or Sodium Chloride. At this point any of these ingredients will likely do the job, especially now, that you will probably wash the paper very thoroughly.