Quote Originally Posted by revdocjim View Post
So I wonder how much silver was in that 5 liter jug of fixer that I recently threw out. I developed more than 25 rolls of 120 film in it!
25 rolls is only 25% of the capacity of 5L of (rapid) fixer at working (1+4) dilution; no need to throw it out just yet!

It can get up to about 7g/L (starts to slow right down) so yours probably had about 1g/L in there, or $3.75 worth at $24/oz. Plus or minus a factor of at least two depending on your choice of film and how heavily it was exposed.