rolllog

Development times

Ilford FP4 Plus in Ilford Ilfotec HC

5 times for 1+31, 1+15, EI 50–200, 20 °C. From HARMAN technology FP4 PLUS Technical Information (2018-11).

Box speed (EI 125), 20 °C, 1+15, intermittent
4:00
Box speed (EI 125), 20 °C, 1+31, intermittent
8:00

Times

1+31 · intermittent

Ilford FP4 Plus in Ilford Ilfotec HC 1+31 · intermittent: time in minutes:seconds by exposure index and temperature
EI20 °C
506:00
1258:00
2009:00

1+15 · intermittent

Ilford FP4 Plus in Ilford Ilfotec HC 1+15 · intermittent: time in minutes:seconds by exposure index and temperature
EI20 °C
1254:00
2005:00

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

Time in min:sec. A dash means the source gives no time for that combination; rolllog doesn't fill gaps. These are starting points: test with your own process.

Ilford FP4 Plus in other developers

Other films in Ilford Ilfotec HC

Same data from the API

curl "https://rolllog.io/api/v1/films/ilford-fp4-plus/dev-times?developer=ilford-ilfotec-hc"

All of Ilford FP4 Plus: exposure, reciprocity, formats and prices.