Ilford's ID-13 H.Q.-caustic Developer

This developer is for dish processing of high contrast graphic arts films and plates where maximum contrast is desired. Also recommended for the development of certain special plates used for scientific purposes, when maximum contrast is desired.

STOCK SOLUTION A
Hydroquinone . . . 25g
Potassium Metabisulphite . . . 25g
Potassium Bormide . . . 25g
Water to make . . . 1 litre

STOCK SOLUTION B
Potassium hydroxide (caustic potash) . . . 50g
Water to make . . . 1 litre

working strength
Dish: Mix equal parts of A and B immediately before use.