Processing for Permanence
Matt:
It's hard to tell what results you will get since you do not list the type of fix you plan to use.
With rapid fix at the "film strength," three minutes is too long!
With conventional fixers, three minutes is not enough.
You can use a rapid fix at "film strength" for one minute and get a good fix. However, the capacity is greatly reduced. I use two weaker fixing baths (rapid fix at "paper strength") for 1.5-2 minutes each. This isn't long. Often, I wash and dry after the first bath and only second fix the "keepers" later, in a "toning session."
The wash is your main weakness here. 15 minutes won't do for permanence. However, it will do for work prints you don't plan on keeping for long. And, you can always complete the processing later by soaking, second fixing, hypo-clearing and washing as described below. Just don't expect them to last a long time if you don't... And, don't sell them as art prints to anyone!
It's not clear from your question if you are addressing your own work or want to ensure permanence for the old family pics. If your concern is to preserve old prints, you can simply re-fix and re-wash them (even tone them if you like).
Simply soak for five minutes and run them through an "archival" process.
My work-flow for fixing (based on lots of research and personal preference) is:
1. Place wet print in a rapid fix mixed "print strength" for 2 minutes (this would be Ilford Hypam or Kodak Rapid Fix 1:9 or equivalent).
2. Transfer print to second fix for 2 minutes (same stuff). The capacity for fixing like this is about 25-30 8x10s per liter (each bath being a liter for 2 liters total). After capacity is reached, mix a new second fix and make the old second fix your first fix. This cycle can be repeated three or four times before mixing both baths fresh. Usually I just use fresh for both. Fixer at this dilution is cheap.
3. (optional) Transfer print directly to selenium toning bath. Tone to desired image change/density increase
4. Transfer print to a hypo-clearing bath. Agitate in this bath for 10 minutes (yep, I know its longer that Kodak's recommendation but there is some science to back up the longer time, and it certainly won't hurt).
5. Wash in archival washer for one hour.
6. Squeegee and dry, face up, on screens.
This should result in very well-processed prints.
Hope this helps,
Doremus Scudder
www.DoremusScudder.com