Every single source agrees that 30 minutes for film, and maybe less for RC in that device will give archival washing. The RC papers have thinner emulsions. Also, the fixer is important, the use of hypo eliminator, toning.... All of this is crucial in making high quality prints.
The articles allude to 1 hour for FB.
That's also Steve Peterson's recommendation for FB. (The other times you mention also match his. For other readers, Steve is the owner of Summitek.)
Originally Posted by Photo Engineer
He quit manufacturing for reasons of low volume, but his web page says that his fabricator may take direct orders on some items.
At least you do not run the water for 5, 10, or more
Originally Posted by Tim Gray
minutes. A running water wash, film, RC, or FB, is a
Most Inefficient use of water.
The Ilford method, fill & dump, is very efficient and
comes with a considerable amount of agitation; 5, 10,
and 20 inversions. In effect the time of each soak/wash
is increased with each change of water.
The first wash is short, removing primarily surface
fixer. Five spaced inversions should be plenty. The
second and third washes, IMO, should be more soak
and certainly no more in agitations; the 10 and 20.
Spacing those 10 and 20 I believe to be a good
idea. Since the method uses so little water
there is no reason to use it other than
at Room temperature. Dan
The wash you suggest may or may not be good depending on operator technique and water supply. That is why I have given the original suggestion by Kodak and others here of a use of continuous water washing. If you use your method, it is virtually mandatory that the person test for residual silver salts and hypo if they wish to get maximum permanence.
I have given the data from Mason earlier in this thread. I also suggest that you consider that most people refer to two levels of wash, normal and archival. You should give some information on the differences if you are to "approve" a given method.
I have found, over the years, that the so called Ilford method is much more intolerant of error. Sorry. I still have to disagree with you.
So long story short...what is the recommended way to wash fiber prints for archival permanance?
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You didn't read the entire thread? Post 41 summarizes part of it.
OMG, then why did we have 5 pages?
Me thinks Mr. Photo has a dry sense of humor. Naughty boy!
sorry, no offense meant at all. This is a great thread!
Sorry PE, I just couldn't resist.
What is it that we're washing out of film anyways?
What's it more soluble in? Water or gelatin?
Originally Posted by jim appleyard
Dry does not go with analog photography! (well, except for Polaroid)