Developer · Black and white
Harman/Ilford Ilfotec LC29
AvailableB&WLiquid Concentrate
Also known as: ILFOTEC LC29, LC 29
High-dilution liquid concentrate based on the Ilfotec HC technology but made to pour easily for small volumes. Sold in 500 ml bottles. On Ilford's film datasheets the LC29 1+9 and 1+19 times match Ilfotec HC 1+15 and 1+31.
- Type
- Liquid
- Process
- B&W
- Temperature
- 20°C
- Dilutions
- 3
- Shelf life
- At 4-20°C: 24 months in full tightly capped bottles, 4 months in half-full bottles.
20–24°C (68–75°F)
concentrate
Characteristics
GrainFine, level 1 of 3
AcutanceNot stated
ContrastNot stated
Not stated
Dilutions
| Ratio | Use | Notes |
|---|---|---|
| 1+9 | Replenishable | Can be reused within one working session without replenishment: 10 films per litre, time increased 10% per film. |
| 1+19 | Replenishable | Can be reused within one working session without replenishment: 5 films per litre. |
| 1+29 | One-shot | One-shot only; Ilford does not recommend reuse at 1+29. |
Shelf life
- Concentrate
- At 4-20°C: 24 months in full tightly capped bottles, 4 months in half-full bottles.
- Working Solution
- Working-strength solutions should not be kept more than 24 hours; discard after the session.
Per 500 ml bottle of concentrate (135-36 films): 1+9 16 one-shot or 50 reused; 1+19 32 one-shot or 50 reused; 1+29 50 one-shot (reuse not recommended).
Development times
| Film | Dilution | ISO | Time | Temp |
|---|---|---|---|---|
| HP5 Plus | 1+9 | 400 | 3m 30s | 20°C (68°F) |
| HP5 Plus | 1+9 | 800 | 5m | 20°C (68°F) |
| HP5 Plus | 1+9 | 1600 | 7m 30s | 20°C (68°F) |
| HP5 Plus | 1+9 | 3200 | 11m | 20°C (68°F) |
| HP5 Plus | 1+19 | 400 | 6m 30s | 20°C (68°F) |
| HP5 Plus | 1+19 | 800 | 9m 30s | 20°C (68°F) |
| HP5 Plus | 1+19 | 1600 | 14m | 20°C (68°F) |
| HP5 Plus | 1+29 | 400 | 9m | 20°C (68°F) |
| FP4 Plus | 1+9 | 125 | 4m | 20°C (68°F) |
| FP4 Plus | 1+9 | 200 | 5m | 20°C (68°F) |
Showing 10 of 70 entries.
Often used for
Small-volume spiral tank processingEconomy at high dilutionFine grain with good sharpness
Limitations & warnings
- Ilford advises against measuring less than 10 ml of concentrate with a cylinder
- Ilford does not recommend push processing in reused developer
Descriptions combine manufacturer specifications with community experience. Subjective assessments reflect common sentiment among photographers and may not match your results.