Quote Originally Posted by StigHagen View Post
can I mix parts of the package, or is it nescessary to mix it all at once?
Mix potassium ferricyanide and fixer only as needed, as the mixture has a very low shelve life. That's why I never buy Farmers Reducer. I just buy the potassium ferricyanide, prepare a 1% solution and mix it with fixer as needed or use them in sequence.