Agfa/Ansco 20

Positive film developer

Water 125F/52C750ml
Metol2g
Sodium Sulfite (anhydrous)25g
Hydroquinone4g
Sodium Carbonate (monohydrate*)18.5g
Potassium Bromide2g
Cold water to make1000ml
Mixing Instructions: Add chemicals in specified sequence.
Dilution: Use undiluted.
Usage: Starting point dev time: 3-5 mins.

Notes 

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