Agitation every minute.
Recipes & dev times using Film Ilford HP5+ 400
Ilford HP5+ 400 in Kodak HC-110 1+7
5 minutes at 20°C/68.0°F
Ilford HP5+ 400 at 6400 in Kodak HC-110 1:31
40 minutes at 20°C/68.0°F
Ilford HP5+ 400 in Kodak HC-110 1+31
6 minutes, 30 seconds at 20°C/68.0°F
Ilford HP5+ 400 in Kodak HC-110 1+63
10 minutes at 20°C/68.0°F