How long can Rollei/Compard digibase c41 kit last?

Heisenberg · Mar 11, 2018

Hi Folks,
How long can Rollei/Compard digibase c41 kit last?
in the working solution, opened concentrate or unopen concentrate.
I cant find in its manual.

Thanks

Down Under · Mar 11, 2018

In my experience with both Tetenal and Rollei C41 kits -

Mixed - I've never kept mixed C41 chemistry longer than 1-2 days. My workflow is to mix up a 250 ml batch (I process in a Jobo), use it to do four or (at most) five rolls in one session, and then discard. Anything else is, I believe, false economy.

Unopened/opened concentrate - Up to six months should be okay, depending on storage conditions - room temperature is important. Someone in another thread wrote about keeping the concentrate chilled in a refrigerator. This is worth exploring as these kits aren't exactly cheap in Australia.

Lots of information online. In this case, Google is your best friend.

thuggins · Mar 15, 2018

I can't comment on C-41, but the Tetenol E-6 kit lasts at least a month mixed. The concentrate was exposed to air in the original containers and that lasted at least six months. My next kit was all decanted into 100ml bottles and I'm hoping this increases the shelf life.

eatfrog · Mar 19, 2018

I got around 3-4 months from the Rollei kit with protectan in the bottles after each use, with a constant increase in blixing time and small increases in dev time. At around 5 months it just was all dead and negs were too thin to salvage.

Peter308 · Mar 21, 2018

I purchased a 1ltr kit in June 2017 and stored it in my wine chiller (red section at 13C!). 7 months later working solution was made up and then over the next 3 weeks I processed 16 rolls of 35mm and 120 of various speeds (50, 100, 200, 400). All came out absolutely fine with negligible change between the 1st and 16th roll. The working solution was stored in full 1 litre plastic bottles in my cellar.

Sirius Glass · Mar 21, 2018

ozmoose said:
In my experience with both Tetenal and Rollei C41 kits -

Mixed - I've never kept mixed C41 chemistry longer than 1-2 days. My workflow is to mix up a 250 ml batch (I process in a Jobo), use it to do four or (at most) five rolls in one session, and then discard. Anything else is, I believe, false economy.

Mixed - I've never kept mixed C41 chemistry longer than 1-2 days. I use the 1 liter UniColor kit.

Truzi · Mar 21, 2018

I'd not keep it too long, but people have various results. The difference can be what is acceptable to you versus correct lab results (personally, I'd probably not notice the difference).

There was a very long thread on the subject a while ago. There are many different things in the thread, but capacity and longevity are mentioned. Take your time and sift through it, and keep in mind opinions vary.
https://www.photrio.com/forum/threads/rollei-digibase-c-41.62287/

How long can Rollei/Compard digibase c41 kit last?

Heisenberg

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