Kodak Professional XTOL is a two-part powder developer suitable for most professional black and white films. It is an ascorbic acid-based developer, which yields a very high image quality at full emulsion speed.
Convenient, room-temperature mixing.
Produces fine grain and high sharpness.
Provides more emulsion speed (shadow detail) than most developers for normal and push processing.
Can also be used to replenish working-strength developer