Cinestill C-41 Development Times
Chemical Reuse
Below you’ll find my table of development times for color negative film using the Cinestill C-41 kit at 102 degrees F. These notes should work with Arista C-41 as well since the instructions are nearly identical for chemical reuse. Heck, it might even be the same stuff, just repackaged.
Tips
It’s handy to print this out and save it in your lab for quick references. It’s also a good idea to put a piece of gapher tape on your chemistry bottles used for storage and mark how many rolls have been developed with them by a sharpie.
| Rolls Processed | Time | |
|---|---|---|
| 0 | new chemistry | 3:30 |
| 1 | 3:34 | |
| 2 | 3:38 | |
| 3 | 3:43 | |
| 4 | 3:47 | |
| 5 | 3:51 | |
| 6 | 3:30 | |
| 7 | 3:59 | |
| 8 | 4:04 | |
| 9 | 4:08 | |
| 10 | 4:12 | |
| 11 | 4:16 | |
| 12 | 4:20 | |
| 13 | 4:25 | |
| 14 | 4:29 | |
| 15 | 4:33 | |
| 16 | 4:37 | |
| 17 | 4:41 | |
| 18 | 4:46 | |
| 19 | 4:50 | |
| 20 | 4:54 |
Usage
The way to read this is not by how many rolls you are going to develop, but how many rolls have already been developed. For example, if I were going to develop 5 rolls with fresh chemistry then I would start at 0. The next batch will start at 5 and so on.