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Frequently Asked Questions
C-41 and RA-4 Storage Life
How long will my C-41 and RA-4 chemicals last once they've been mixed?
For best results, do not use KODAK FLEXICOLOR or EKTACOLOR Chemicals stored longer than the times given in the table below:
| Product | Mixed Solutions In Processor-No Operation | Replenisher in Covered Tank with Floating Lid |
|---|---|---|
| FLEXICOLOR Developer LORR | 1 week | 4 weeks |
| EKTACOLOR PRIME Developer | 1 week | 3 weeks |
| EKTACOLOR PRIME Regenerator | 1 week | 3 weeks |
| EKTACOLOR RA Developer RT | 1 week | 6 weeks |
| All other EKTACOLOR & FLEXICOLOR Chemicals * | 2 weeks | 8 weeks |
- Store chemical concentrates at 5-30 degrees C (40-86 degrees F) in a dry location. At temperatures lower than 5 degrees C (40 degrees F), parts may come out of solution or crystallize. Temperatures higher than 30 degrees C (86 degrees F) will accelerate chemical reactions and cause the concentrates to deteriorate.
- Store mixed solutions in polyethylene storage tanks at approximately 21 degrees C (70 degrees F)
- Storing a replenisher at too high a temperature accelerates oxidation and evaporation. To reduce oxidation and evaporation, use floating lids on all solutions.
To find further information on the use of KODAK Chemicals, please see the
Kodak Index to Photographic Information
.