20C Agitation: first 30, five seconds every minute.
Easily compare recipes with the FilmDev Recipe Finder
All FilmDev Recipes
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