Ilford ID-35

High contrast film developer

Part A
Water750ml
Hydroquinone37.5g
Sodium Sulfite (anhydrous)94g
Potassium Bromide9g
Cold water to make1000ml
Part B
Water750ml
Sodium Carbonate (monohydrate*)217g
Cold water to make1000ml
Mixing Instructions: Add chemicals in specified sequence.
Dilution: Mix equal parts A + B.
Usage: Starting point dev time: 5-7 mins.

Notes 

*multiply amount by 0.833 if using Sodium Carbonate in anhydrous form.