3 or 4 inversions (in 10 seconds) alternating each minute. Water stop, Ilford...
Recipes & dev times using Film Kodak Tri-X 400
Kodak Tri-X 400 in Kodak D-76 1+1
6 minutes, 30 seconds at 20°C/68.0°F
Kodak Tri-X 400 at 800 in Kodak D-76 1+1
9 minutes, 45 seconds at 20°C/68.0°F
Kodak Tri-X 400 at 1600 in Kodak D-76 1+1
13 minutes, 25 seconds at 20°C/68.0°F