Distilled water 750ml
Sodium Metabisulfite 10g
Pyrocatechin 50g
Phenidone 2g
Potassium Bromide 1g
Water to make (68 degrees F) 1000ml
Solution A
Solution B
Distilled water 750ml
Potassium Carbonate 750g
Water to make (68 degrees F) 1000ml
Dilute 1 part A and 1 part B into 100 parts water for use. The shelf life of the stock solutions is a year or more. Once it's mixed, it should be used one-shot and discarded. For an increase in contrast, mix 1:2:100. Pyrocat also makes a great developer for stand developing negatives. Dilute 1:1:500 for this procedure.
 

 

Pyrocat HD