Quote Originally Posted by Michael R 1974 View Post
I haven't said anything about fix rate, just wash rate. I don't know what I have backwards regarding pH and swell. If you're referring to the longer diffusion path slightly slowing down the washing of the emulsion layer as swell increases, I'm just pointing out it does say that in the text. The only definitive reference to an alkaline pH increasing wash efficiency is in the section on alkaline baths which I cited above. I guess what you're saying is the effect of an alkaline bath can essentially be combined with the fixing process in an alkaline fixer. Fair enough I guess.
Michael, you keep quoting Haist's book as if it was a comprehensive collection of everything he knew about photochemistry. It simply isn't and Ron already told you why it couldn't. There is a long chapter on miracle tricks how to boost film speed by two stops, but besides its historical value there is little merit in that whole chapter. Many other chapters are outdated , incomplete or even misleading because of the restrictions Kodak forced onto Grant Haist. Think about the following facts:
  • The first edition was published in 1979 with the title "Modern Photographic Processing"
  • C41 was introduced in 1972, yet the book only mentions C-22
  • E6 was introduced in 1976, yet the book doesn't mention it
  • HC-110 was introduced in 1965, yet the book doesn't mention it

The list could go on and on. And rest assured that Grant knew all these things very well considering his position!

Fact is there is no easy to follow book or path into photochemistry, and a lot of research will have to be replicated by us or will be lost eventually.