Originally Posted by brucemuir
Henry, the formula for reversal 1st developer calls for adding some sodium thiosulphate to clear highlights but Mr Datsuns recipe in the OP seems way excessive.
Sorry I'm also unfamiliar with D94a
You mean a 1L of a 10% solution is excessive? That's just as I remember reading it. I see that D94a has Sodium Sulfite (anhydrous) 60.0 g in it. I'm a bit out of my depth with chemistry.