Developer · C-41 colour
Unicolor Unicolor C-41
AvailableC-41Processing KitBlix
Also known as: Arista C-41
Unicolor K-2 powder C-41 kit (Photo Systems, Inc., catalogue 10123). Hand tank 102 F (38.9 C); rotary tube 75-104 F with times from 17.5 min (75 F) down to 3.5 min (104 F). Does not state keeping times.
- Type
- Kit
- Process
- C-41
- Temperature
- 38.9°C
- Dilutions
- 1
- Capacity
- 8
- Shelf life
- Not stated in the instructions
24–40°C (75–104°F)
rolls per litre
concentrate
Dilutions
| Ratio | Use | Notes |
|---|---|---|
| stock | Replenishable | 1 litre powder kit: developer, blix and stabiliser mixed from powders (developer and blix in 800 ml of water at 110 F / 43.5 C, made up to 1000 ml). |
Shelf life
- Concentrate
- Not stated in the instructions
- Working Solution
- Not stated in the instructions
Unicolor: 8 rolls of 135-36 or 120 per 960 ml (32 oz) of working solution, 4 per 480 ml; the maker says more is possible with test-film checks.
Development times
| Film | Dilution | ISO | Time | Temp |
|---|---|---|---|---|
| Portra 400 | stock | 400 | 3m 30s | 38.9°C (102°F) |
| Portra 400 | stock | 800 | 4m 23s | 38.9°C (102°F) |
| Portra 400 | stock | 1600 | 5m 15s | 38.9°C (102°F) |
| Portra 400 | stock | 400 | 8m | 32.2°C (90°F) |
| Portra 400 | stock | 400 | 17m 30s | 23.9°C (75°F) |
| Portra 160 | stock | 160 | 3m 30s | 38.9°C (102°F) |
| Portra 800 | stock | 800 | 3m 30s | 38.9°C (102°F) |
| Ektar 100 | stock | 100 | 3m 30s | 38.9°C (102°F) |
| Gold 200 | stock | 200 | 3m 30s | 38.9°C (102°F) |
| Ultramax 400 | stock | 400 | 3m 30s | 38.9°C (102°F) |
Showing 10 of 22 entries.
Often used for
Budget home C-41BeginnersQuick 2-bath processing
Limitations & warnings
- Blix-based (less archival than separate bleach/fix)
- White-label product with limited official documentation
Descriptions combine manufacturer specifications with community experience. Subjective assessments reflect common sentiment among photographers and may not match your results.