JC's Pyro

Pyro film developer

Part A
Water800ml
Phenidone0.75g
Sodium Bisulfite7.5g
Pyro30g
Potassium Bromide4.2g
Cold water to make1000ml
Part B
Water800ml
Sodium Sulfite (anhydrous)150g
Cold water to make1000ml
Part C
Water800ml
Sodium Carbonate (anhydrous)60g
Cold water to make1000ml
Mixing Instructions: Add chemicals in specified sequence. Mix Part B within 24 hours of use.
Dilution: 1+1+1+20 (can be varied to control development time)
Usage: Starting point dev time: 12 mins.

Notes 

Variant of ABC Pyro with less oxidation. Suitable for roll films. Contrast can be controlled by variation of Part C, as with ABC.