Yes Dan, I know what conditions are like in OZ.
That is why I am trying my best to design a fixer that uses less water!
More on that sometime soon, but it has taken several years of work.
BTW, if Mason repudiates his work, what does that say about it? It works, just not well enough in some cases for archival work perhaps? I suggest that people "trust but verify". Do you? I check all prints for retained hypo and retained silver.