TriX wrote:
Has anyone tried the CineStill 2 bath C-41 color negative processing chemicals? I’ve usually used the 4-5 chemical process, but this is getting excellent reviews and the pricing is very reasonable.
https://cinestillfilm.com/products/cs41-simplified-color-processing-at-home-quart-kit-c-41-chemistry?variant=30376678593
If you have some form of water bath temperature control for tanks and chemical bottles, go for it. I haven't personally used it, but watched a video on it on YouTube by a guy I trust. https://youtu.be/kU2vLRITu7A?
The keys are
> accurate temperature control in the developer (±0.5°F) (use a sous vide temperature control device)
> accurate timing and precise agitation technique
> CLEAN containers and mixing equipment, and follow mixing instructions precisely
> total darkness when loading film into the tank
> wearing chemical-proof gloves throughout (most videos don't show people wearing gloves, which with C41 is a Very Bad Practice)
> proper bottle labeling
> if you reuse chemicals, proper recording of the number of equivalent rolls of film developed
> proper calculation of the new developing time for subsequent batches/rolls.
I would use distilled water to mix chemicals, to avoid any reactions with residual dissolved water treatment chemicals and minerals.
Most of this is covered in the PDF instructions you can find at the link you listed.
No matter whose kit you use, C41 solutions are nasty and dangerous, so avoid getting them on skin or clothes or countertops. BLIX can stain, and it smells funny. I always used funnels, separate measuring beakers for developer and bleach/fix, and permanently labeled dark brown glass bottles. I had gloves that went half-way to my elbows. My Nikor tanks didn't leak if I twisted the tops after pressing them on. I preferred stainless steel tanks because they conduct heat quickly.
I did a lot of E6 back in the 1980s, which is harder than C41 because it has more steps. But C41 bleach fix (BLIX) is nastier stuff. Protect thyself...
Dry film in a dust-free place like a bathtub with a shower curtain I hung a clothesline from the shower head to a cuphook on the opposite wall, and used spring-loaded clothespins on the line, with additional clothespins as weights at the opposite end of the film.