Ilford ID-19

X-ray and Aerial film developer

Water 125F/52C750ml
Metol2.3g
Sodium Sulfite (anhydrous)72g
Hydroquinone8.8g
Sodium Carbonate (monohydrate*)56g
Potassium Bromide4g
Cold water to make1000ml
Mixing Instructions: Add chemicals in specified sequence.
Dilution: Use undiluted.
Usage: Starting point dev time: 4 mins.

Notes 

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