30s initial agitation, after that one inversion every minute.
Easily compare recipes with the FilmDev Recipe Finder
All FilmDev Recipes
Rollei Rpx 400 in Agfa R09 One Shot 1:25
9 minutes at 20°C/68.0°F
Ilford HP5+ 400 at 1600 in Ilford Microphen 1+0
11 minutes at 20°C/68.0°F