Ilfotec HC
B&W developer
Liquid concentrate
In production
Reusable at some dilutions
Replenishable
Development times
| Film | Dilution | EI | Temp | Time | Agitation | Source |
|---|---|---|---|---|---|---|
| Pan F Plus | 1+31 | 50 | 20.0 °C | 4:00 | Ilford — 4 inversions every 60 s | |
| Pan F Plus | 1+11 | 25 pull 1 stop | 24.0 °C | 0:50 | Machine — continuous | |
| Pan F Plus | 1+11 | 50 | 24.0 °C | 1:05 | Machine — continuous | |
| FP4 Plus | 1+15 | 125 | 20.0 °C | 4:00 | Ilford — 4 inversions every 60 s | |
| FP4 Plus | 1+15 | 200 push 0.75 stops | 20.0 °C | 5:00 | Ilford — 4 inversions every 60 s | |
| FP4 Plus | 1+31 | 50 pull 1.25 stops | 20.0 °C | 6:00 | Ilford — 4 inversions every 60 s | |
| FP4 Plus | 1+31 | 125 | 20.0 °C | 8:00 | Ilford — 4 inversions every 60 s | |
| FP4 Plus | 1+31 | 200 push 0.75 stops | 20.0 °C | 9:00 | Ilford — 4 inversions every 60 s | |
| Ilford Delta 100 Pro | 1+31 | 50 pull 1 stop | 20.0 °C | 5:00 | Ilford — 4 inversions every 60 s | |
| Ilford Delta 100 Pro | 1+31 | 100 | 20.0 °C | 6:00 | Ilford — 4 inversions every 60 s | |
| Ilford Delta 100 Pro | 1+31 | 200 push 1 stop | 20.0 °C | 8:00 | Ilford — 4 inversions every 60 s | |
| Ilford HP5+ | 1+15 | 400 | 20.0 °C | 3:30 | Ilford — 4 inversions every 60 s | |
| Ilford HP5+ | 1+15 | 800 push 1 stop | 20.0 °C | 5:00 | Ilford — 4 inversions every 60 s | |
| Ilford HP5+ | 1+15 | 1600 push 2 stops | 20.0 °C | 7:30 | Ilford — 4 inversions every 60 s | |
| Ilford HP5+ | 1+15 | 3200 push 3 stops | 20.0 °C | 11:00 | Ilford — 4 inversions every 60 s | |
| Ilford HP5+ | 1+31 | 400 | 20.0 °C | 6:30 | Ilford — 4 inversions every 60 s | |
| Ilford HP5+ | 1+31 | 800 push 1 stop | 20.0 °C | 9:30 | Ilford — 4 inversions every 60 s | |
| Ilford HP5+ | 1+31 | 1600 push 2 stops | 20.0 °C | 14:00 | Ilford — 4 inversions every 60 s | |
| SFX 200 | 1+15 | 200 | 20.0 °C | 5:00 | Ilford — 4 inversions every 60 s | |
| SFX 200 | 1+15 | 400 push 1 stop | 20.0 °C | 7:00 | Ilford — 4 inversions every 60 s | |
| SFX 200 | 1+15 | 800 push 2 stops | 20.0 °C | 10:30 | Ilford — 4 inversions every 60 s | |
| SFX 200 | 1+31 | 200 | 20.0 °C | 9:00 | Ilford — 4 inversions every 60 s | |
| SFX 200 | 1+31 | 400 push 1 stop | 20.0 °C | 13:00 | Ilford — 4 inversions every 60 s | |
| SFX 200 | 1+31 | 800 push 2 stops | 20.0 °C | 19:00 | Ilford — 4 inversions every 60 s | |
| Delta 400 Professional | 1+15 | 320 pull 0.25 stops | 20.0 °C | 4:00 | Ilford — 4 inversions every 60 s | |
| Delta 400 Professional | 1+15 | 800 push 1 stop | 20.0 °C | 5:30 | Ilford — 4 inversions every 60 s | |
| Delta 400 Professional | 1+15 | 1600 push 2 stops | 20.0 °C | 7:30 | Ilford — 4 inversions every 60 s | |
| Delta 400 Professional | 1+15 | 3200 push 3 stops | 20.0 °C | 13:00 | Ilford — 4 inversions every 60 s | |
| Delta 400 Professional | 1+31 | 200 pull 1 stop | 20.0 °C | 5:00 | Ilford — 4 inversions every 60 s | |
| Delta 400 Professional | 1+31 | 400 | 20.0 °C | 7:30 | Ilford — 4 inversions every 60 s | |
| Delta 400 Professional | 1+31 | 800 push 1 stop | 20.0 °C | 10:00 | Ilford — 4 inversions every 60 s | |
| Delta 400 Professional | 1+31 | 1600 push 2 stops | 20.0 °C | 13:30 | Ilford — 4 inversions every 60 s | |
| Delta 400 Professional | 1+15 | 800 push 1 stop | 24.0 °C | 4:30 | Ilford — 4 inversions every 60 s | |
| Delta 400 Professional | 1+15 | 1600 push 2 stops | 24.0 °C | 5:30 | Ilford — 4 inversions every 60 s | |
| Delta 400 Professional | 1+15 | 3200 push 3 stops | 24.0 °C | 8:00 | Ilford — 4 inversions every 60 s | |
| Delta 400 Professional | 1+31 | 200 pull 1 stop | 24.0 °C | 4:00 | Ilford — 4 inversions every 60 s | |
| Delta 400 Professional | 1+31 | 400 | 24.0 °C | 5:00 | Ilford — 4 inversions every 60 s | |
| Delta 400 Professional | 1+31 | 800 push 1 stop | 24.0 °C | 7:00 | Ilford — 4 inversions every 60 s | |
| Delta 400 Professional | 1+31 | 1600 push 2 stops | 24.0 °C | 10:00 | Ilford — 4 inversions every 60 s | |
| Delta 3200 Professional | 1+15 | 1600 pull 1 stop | 20.0 °C | 5:00 | Ilford — 4 inversions every 60 s | |
| Delta 3200 Professional | 1+15 | 3200 | 20.0 °C | 8:00 | Ilford — 4 inversions every 60 s | |
| Delta 3200 Professional | 1+15 | 6400 push 1 stop | 20.0 °C | 13:00 | Ilford — 4 inversions every 60 s | |
| Delta 3200 Professional | 1+31 | 400 pull 3 stops | 20.0 °C | 6:00 | Ilford — 4 inversions every 60 s | |
| Delta 3200 Professional | 1+31 | 800 pull 2 stops | 20.0 °C | 7:30 | Ilford — 4 inversions every 60 s | |
| Delta 3200 Professional | 1+31 | 1600 pull 1 stop | 20.0 °C | 9:00 | Ilford — 4 inversions every 60 s | |
| Delta 3200 Professional | 1+31 | 3200 | 20.0 °C | 14:30 | Ilford — 4 inversions every 60 s | |
| Delta 3200 Professional | 1+15 | 3200 | 24.0 °C | 5:30 | Ilford — 4 inversions every 60 s | |
| Delta 3200 Professional | 1+15 | 6400 push 1 stop | 24.0 °C | 8:30 | Ilford — 4 inversions every 60 s | |
| Delta 3200 Professional | 1+31 | 400 pull 3 stops | 24.0 °C | 5:00 | Ilford — 4 inversions every 60 s | |
| Delta 3200 Professional | 1+31 | 800 pull 2 stops | 24.0 °C | 6:00 | Ilford — 4 inversions every 60 s | |
| Delta 3200 Professional | 1+31 | 1600 pull 1 stop | 24.0 °C | 7:00 | Ilford — 4 inversions every 60 s | |
| Delta 3200 Professional | 1+31 | 3200 | 24.0 °C | 10:30 | Ilford — 4 inversions every 60 s | |
| Pan 100 | 1+31 | 100 | 20.0 °C | 6:30 | Ilford — 4 inversions every 60 s | |
| Pan 100 | 1+31 | 200 push 1 stop | 20.0 °C | 8:00 | Ilford — 4 inversions every 60 s | |
| Pan 200 | 1+15 | 200 | 20.0 °C | 4:00 | Ilford — 4 inversions every 60 s | |
| Pan 200 | 1+15 | 400 push 1 stop | 20.0 °C | 7:30 | Ilford — 4 inversions every 60 s | |
| Pan 200 | 1+31 | 100 pull 1 stop | 20.0 °C | 4:45 | Ilford — 4 inversions every 60 s | |
| Pan 200 | 1+31 | 200 | 20.0 °C | 6:00 | Ilford — 4 inversions every 60 s | |
| Pan 200 | 1+31 | 400 push 1 stop | 20.0 °C | 10:00 | Ilford — 4 inversions every 60 s | |
| Ortho Plus | 1+15 | 80 | 20.0 °C | 4:00 | Ilford — 4 inversions every 60 s | |
| Ortho Plus | 1+31 | 80 | 20.0 °C | 6:00 | Ilford — 4 inversions every 60 s | |
| Pan 100 | 1+15 | 100 | 20.0 °C | 4:00 | Ilford — 4 inversions every 60 s | |
| Pan 100 | 1+15 | 200 push 1 stop | 20.0 °C | 5:00 | Ilford — 4 inversions every 60 s | |
| Pan 100 | 1+31 | 50 pull 1 stop | 20.0 °C | 6:00 | Ilford — 4 inversions every 60 s | |
| Pan 100 | 1+31 | 100 | 20.0 °C | 8:00 | Ilford — 4 inversions every 60 s | |
| Pan 100 | 1+31 | 200 push 1 stop | 20.0 °C | 9:00 | Ilford — 4 inversions every 60 s | |
| Pan 100 | 1+11 | 100 | 24.0 °C | 1:10 | Machine — continuous | |
| Pan 400 | 1+15 | 400 | 20.0 °C | 3:00 | Ilford — 4 inversions every 60 s | |
| Pan 400 | 1+15 | 800 push 1 stop | 20.0 °C | 5:00 | Ilford — 4 inversions every 60 s | |
| Pan 400 | 1+15 | 1600 push 2 stops | 20.0 °C | 7:00 | Ilford — 4 inversions every 60 s | |
| Pan 400 | 1+15 | 3200 push 3 stops | 20.0 °C | 11:00 | Ilford — 4 inversions every 60 s | |
| Pan 400 | 1+31 | 200 pull 1 stop | 20.0 °C | 5:00 | Ilford — 4 inversions every 60 s | |
| Pan 400 | 1+31 | 400 | 20.0 °C | 6:00 | Ilford — 4 inversions every 60 s | |
| Pan 400 | 1+31 | 800 push 1 stop | 20.0 °C | 9:00 | Ilford — 4 inversions every 60 s | |
| Pan 400 | 1+31 | 1600 push 2 stops | 20.0 °C | 14:00 | Ilford — 4 inversions every 60 s | |
| Pan 400 | 1+11 | 200 pull 1 stop | 24.0 °C | 0:50 | Machine — continuous | |
| Pan 400 | 1+11 | 400 | 24.0 °C | 0:55 | Machine — continuous | |
| Pan 400 | 1+11 | 800 push 1 stop | 24.0 °C | 1:10 | Machine — continuous | |
| Pan 400 | 1+11 | 1600 push 2 stops | 24.0 °C | 1:30 | Machine — continuous | |
| Pan 100 | 1+15 | 100 | 20.0 °C | 4:00 | Ilford — 4 inversions every 60 s | |
| Pan 100 | 1+15 | 200 push 1 stop | 20.0 °C | 5:00 | Ilford — 4 inversions every 60 s | |
| Pan 100 | 1+31 | 50 pull 1 stop | 20.0 °C | 5:00 | Ilford — 4 inversions every 60 s | |
| Pan 400 | 1+15 | 400 | 20.0 °C | 4:30 | Ilford — 4 inversions every 60 s | |
| Pan 400 | 1+15 | 800 push 1 stop | 20.0 °C | 6:30 | Ilford — 4 inversions every 60 s | |
| Pan 400 | 1+31 | 400 | 20.0 °C | 8:00 | Ilford — 4 inversions every 60 s | |
| Pan 400 | 1+31 | 800 push 1 stop | 20.0 °C | 12:30 | Ilford — 4 inversions every 60 s |
Reuse
Checked 21 October 2026
Ilford says whether Ilford Ilfotec HC may be reused depends on how it is used. It can also be replenished.
- 1+11 use once
- 1+15 may be reused
- 1+31 may be reused
1+15: +10 % development time for each successive film in a litre (N, N+10 %, N+20 % ...), up to N+90 % for film 10.
1+31: +10 % development time for each successive film in a litre (N, N+10 %, N+20 % ...), up to N+40 % for film 5.
Capacity, as the maker states it: Reused working solution: 10 films per litre at 1+15, 5 films per litre at 1+31.
ILFOTEC HC 1+15 and 1+31 working strength developer in spiral tanks without replenishment to process either a number of films individually or multiple films in batches. ... The table below gives the number of 135/36 or 120 roll films a litre of working strength ILFOTEC HC can process provided that the developer is reused. ... ILFOTEC HC 1+15: 10 films/litre; ILFOTEC HC 1+31: 5 films/litre. ... We do not recommend reusing diluted developers, 1+47, always use fresh solutions on each occasion. ... Do not use ILFOTEC HC developer as replenisher.
ILFORD ILFOTEC HC Technical Information (Harman, June 2010, 13 pp.) ↗
Dilutions
- 1+11 1 + 11 water
- 1+15 1 + 15 water
- 1+31 1 + 31 water
Link to this page
Specification
- Type
- B&W developer
- Form
- Liquid concentrate
- Capacity rolls per litre
- —
- Shelf life, unopened
- —
- Shelf life, opened
- —
A dash means the figure has not been read off the maker’s sheet. A guess here would produce wrong answers silently.
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