Ilford FP4 Extended Minimal Agitation
These development times are based on the Extended Minimal Agitation routine using Pyrocat-HD developer.
Using the Extended Minimal Agitation routine can give you excellent results and in some cases you will see enhanced mid-tone contrast.
The following times and agitation schemes are based on Ilford FP4 sheet film using 500ml of working solution at a working temperature of 21 degrees centigrade (70°F)
Pre Soak
It is recommended that you first pre-soak the film in clean water for around 3 – 5 minutes.
| Dev | A | B | Agitate To | Rest To | Agitate To | Rest To | Agitate To | Rest | Total Time | |
|---|---|---|---|---|---|---|---|---|---|---|
| N | 3 | 2 | 2:00 | 9:30 | 9:50 | 17:00 | 17:20 | Rest To End | 24:30 | 7.5x3(20) |
| N + 1 | 3 | 2 | 2:00 | 12:30 | 12:50 | 23:00 | 23:20 | Rest To End | 33:30 | 10.5x3(20) |
| N + 2 | 3.5 | 2.5 | 3:00 | 15:00 | 15:25 | 27:30 | 27:55 | Rest To End | 39:00 | 12x3(25) |
| N + 3 | 3.5 | 2.5 | 3:00 | 21:00 | 21:30 | 39:30 | 40:00 | Rest To End | 57:00 | 18x3(30) |
| N + 4 | 4 | 3 | 5:00 | 20:00 | 20:40 | 35:40 | 36:20 | Rest To End | 50:00 | 15x3(40) |
| N - 1 | 3 | 2 | 2:00 | 8:30 | 8:50 | 15:00 | 15:20 | Rest To End | 21:30 | 6.5x3(20) |
| N - 2 | 3 | 2 | 1:30 | 6:30 | 6:50 | 11:50 | 12:10 | Rest To End | 16:30 | 5x3(20) |
| N - 3 | 2.5 | 2 | 1:30 | 9:30 | 9:45 | 17:50 | 18:05 | Rest To End | 25:30 | 8x3(15) |
| N - 4 | 2.5 | 2 | 1:30 | 8:00 | 8:15 | 14:45 | 15:00 | Rest To End | 21:00 | 6.5x3(15) |
| N - 5 | 2.5 | 2 | 1:25 | 6:30 | 6:40 | 12:05 | 12:15 | Rest To End | 17:00 | 5.25x3(10) |
| N - 6 | 2.5 | 2 | 1:25 | 5:30 | 5:40 | 10:05 | 10:15 | Rest To End | 15:15 | 4.5x3(10) |