Development time
Kodak Plus-X Pan 125 in XTOL
5:30 at 20°C (68°F), stock dilution, box speed.
Start timer · 5:30- Time
- 5:30
- Dilution
- Stock
- Temperature
- 20°C
- Box speed
- ISO 125
All 10 times
| Dilution | EI | Time | Temp | Agitation | Evidence | Timer |
|---|---|---|---|---|---|---|
| Stock | 125 | 5:30 | 20°C / 68°F | Standard | ManufacturerChecked Oct 2026 | Start timer |
| Stock | 125 | 5:00 | 21°C / 70°F | Standard | ManufacturerChecked Oct 2026 | Start timer |
| Stock | 125 | 4:00 | 24°C / 75°F | Standard | ManufacturerChecked Oct 2026 | Start timer |
| 1+1 | 125 | 8:15 | 20°C / 68°F | Standard | ManufacturerChecked Oct 2026 | Start timer |
| 1+1 | 125 | 7:30 | 21°C / 70°F | Standard | ManufacturerChecked Oct 2026 | Start timer |
| 1+1 | 125 | 6:00 | 24°C / 75°F | Standard | ManufacturerChecked Oct 2026 | Start timer |
| Stock | 500+2 stops | 8:15 | 20°C / 68°F | Standard | ManufacturerChecked Oct 2026 | Start timer |
| 1+1 | 500+2 stops | 11:15 | 20°C / 68°F | Standard | ManufacturerChecked Oct 2026 | Start timer |
| Stock | 1000+3 stops | 10:00 | 20°C / 68°F | Standard | ManufacturerChecked Oct 2026 | Start timer |
| 1+1 | 1000+3 stops | 13:30 | 20°C / 68°F | Standard | ManufacturerChecked Oct 2026 | Start 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°F | 19°C66°F | 20°C68°F | 21°C70°F | 22°C72°F | 23°C73°F | 24°C75°F |
|---|---|---|---|---|---|---|
| 6:53 | 6:10 | 5:30 | 4:57 | 4:24 | 3:58 | 3:35 |
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
| Dilution | 300 ml (10.1 fl oz) (one 35mm roll) | 500 ml (16.9 fl oz) (one 120 roll) |
|---|---|---|
| Stock | Use as mixed, undiluted | Use as mixed, undiluted |
| 1+1 | 150 ml developer + 150 ml water | 250 ml developer + 250 ml water |
How they work together
- XTOL
- Fine grain, high acutance, full film speed, normal contrast. Excellent shadow detail with wide latitude.
- Kodak Plus-X Pan 125
- Medium-speed, very fine-grain classic Kodak panchromatic film (1954-2011); discontinuation announced 2010 with final stock in 2011.
- Notes on this pairing
- Small tank, agitation every 30 s; 135 Plus-X 125 (125PX). J-109 gives 6:00 at 20 °C for 120/220.
- Small tank, agitation every 30 s; 135 Plus-X 125 (125PX). J-109 gives 6:00 at 20 °C for 120/220. Kodak warns tank times under 5 min may give uneven development.
- Small tank, agitation every 30 s; 135 Plus-X 125 (125PX). Same times for 120/220.
- Two-stop push. Small tank, agitation every 30 s; 135 film.
- Three-stop push. Small tank, agitation every 30 s; 135 film.
Plus-X Pan 125 in other developers
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