retro 400s, not 400! @20C with continuous agitation during the first minute, ...
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Ilford HP5+ 400 in Tetenal Ultrafin Plus 1:4
7 minutes, 30 seconds
Ilford HP5+ 400 in Ilford Ilfosol 3 1:9
7 minutes
Kodak HIE 25 at 400 in Kodak Microdol-X 1+1
10 minutes, 30 seconds at 24°C/75.2°F