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Development time

Foma Bohemia Fomapan 100 Classic in Fomadon P

7:00 at 20°C (68°F), stock dilution, box speed.

Start timer · 7:00
Time
7:00
Standard
Dilution
Stock
Temperature
20°C
68°F
Box speed
ISO 100
B&W

All 2 times

DilutionEITimeTempAgitationEvidenceTimer
Stock1007:0020°C / 68°FStandardManufacturerChecked Oct 2026Start timer
Stock1004:0030°C / 86°FStandardManufacturerChecked Oct 2026Start timer

EI is the speed the film was rated at when shooting. Evidence says where each time comes from: the manufacturer’s own data, a named test, a compilation or several agreeing reports (community consensus), or one person’s report. Times marked “not yet verified” come from secondary sources and haven’t been checked against a manufacturer datasheet. Where sources give different times, every one is listed and marked “sources differ”.

Other temperatures

18°C64°F19°C66°F20°C68°F21°C70°F22°C72°F23°C73°F24°C75°F
8:457:507:006:185:365:024:33

Calculated from the 20°C (68°F) time using Ilford’s temperature compensation factors, not taken from a datasheet. Most B&W developers behave well between 18–24°C (64–75°F).

Mixing

Dilution300 ml (10.1 fl oz) (one 35mm roll)500 ml (16.9 fl oz) (one 120 roll)
StockUse as mixed, undilutedUse as mixed, undiluted

How they work together

Foma Bohemia Fomapan 100 Classic
Traditional cubic-grain emulsion with high resolving power and a wide range of halftones (Foma datasheet: RMS 13.5, 110 lines/mm). Rated ISO 100/21 but the maker says it gives good results one stop over (EI 50) or two stops under (EI 400) with no change in development.
Notes on this pairing
  • Fomadon P. Datasheet gives 7 to 8 min; lower figure used.
  • Fomadon P. Datasheet alternative at 30 °C.

Fomapan 100 Classic in other developers

Other films in Fomadon P