Quote Originally Posted by CBG View Post
Hypo eliminators are completely different; they
destroy hypo within the paper rather than
helping it be removed from the paper.
"What hypo is not washed out is then turned to sodium
sulfate, which is harmless." He is writing of potassium
permanganate and the washing of film.

After a first wash the film is further washed in water
tinted with the permanganate. If the the tinted water
goes colorless further washing is needed. Dan