Development times
Showing 1 of 48 published times.
| Film | Dilution | EI | Temp | Time | Agitation | Source |
|---|---|---|---|---|---|---|
| Ilford HP5+ | stock 20.0 °C | 800 push 1 stop | 6:30 | Ilford — 4 inversions every 60 s |
Reuse
Checked 21 October 2026
Acufine says Acufine may be used for more than one film. It can also be replenished.
Longer time for reuse: Four rolls at the normal time, then +2 % for each additional roll, up to 16 rolls per quart.
Capacity, as the maker states it: Without replenishment: four rolls at normal times, then +2 % for each additional roll; no more than 16 rolls per quart.
Replenishment can be continued until a volume equal to the volume of the original developer has been added. Without replenishment, four rolls of film may be developed at normal times. Increase the developing times by 2% for each additional roll. Develop no more than 16 rolls per quart in this manner.
Dilutions
- stock undiluted stockStock solution The concentrated form of a chemical, or a developer used undiluted. Read more in the glossary ›
- 1+3 1 + 3 water
Link to this page
Specification
- Type
- B&W developer
- Form
- Powder
- 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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