Ilford ID-16

Special lantern plate developer

Part A
Water 125F/52C750ml
Sodium Sulfite (anhydrous)50g
Cold water to make1000ml
Part B
Cold Water750ml
Sodium Hydroxide10g
Potassium Bromide4g
Cold water to make1000ml
Mixing Instructions: Add chemicals in specified sequence. Always use cold water when mixing potassium or sodium hydroxide due to risk of heat reaction.
Dilution: Mix equal parts A + B immediately before use.
Usage: Starting point dev time: 2 mins.