There was no published time for this. I used times for D76 and Rodinal for t...
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ORWO NP27 400 at 100 in HC 110 1+31
10 minutes at 20°C/68.0°F
ILFORD XP1 400 in Agfa R09 One Shot 1+100
1 hour, 30 minutes (Stand developed) at 20°C/68.0°F