Agitation for first minute, then three inversions every minute.
Recipes & dev times using Developer Kodak XTOL
Kodak Tri-X 400 at 6400 in Kodak XTOL stock
15 minutes at 21°C/69.8°F
Kodak Tri-X 400 in Kodak XTOL neat
7 minutes at 20°C/68.0°F
Kodak Tri-X 400 at 1600 in Kodak XTOL
11 minutes at 21°C/69.8°F