Continuous first 60 secs, then 4 inversions per minute.
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Ilford HP5+ 400 in Agfa R09 One Shot 1+50
11 minutes at 20°C/68.0°F
Ilford HP5+ 400 in Ilford Ilfotec LC29 1+19
6 minutes, 30 seconds at 20°C/68.0°F
Kodak Tri-X 400 in Photographers' Formulary Pyrocat HD 1+1+100
16 minutes at 22°C/71.6°F
Ilford HP5+ 400 in Foma Fomadon R09 1:40
12 minutes, 20 seconds at 20°C/68.0°F