Developer 20 C Agitation: first 30 seconds, then five sec every minute for ...
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Ilford HP5+ 400 in Kodak T-MAX 1:4
9 minutes, 30 seconds
Ilford HP5+ 400 at 1600 in Kodak T-MAX 1:4
9 minutes, 30 seconds
Ilford HP5+ 400 at 800 in Kodak T-MAX 1:4
Unspecified duration