Sorry about that, posted before I was finished.
Solution B 5 gm Sodium Hydroxide to 100 cc water
Solution C 8.4 gm Potassium Fericyanide to 100 cc water
These three stock solutions should be stored separately in brown bottles before use and mixed in the following proportion 1 oz A to 1 cc of B to 4 cc of C. If a slower action is desired you may add 1 oz of water. This is a very fast acting formula that will work on upper midtones and highlights.