Quote Originally Posted by john_s View Post
And a sodium sulphite rinse, with maybe a pinch of metabisulphite and citric acid is very cheap and known to work.
It is well established that hypo clearing bath helps in washing out Thiosulfate (and possibly its insoluble Silver complexes), but what Doremus understandably challenges is something different: that a wash step in hypo clearing agent after fixing allows a single bath fixer setup to process as many sheets as normally a two bath fixer setup.