bengt
Hello
Does anyone have experience using a Jobo CPA2 for developing both colour and black-and-white film?
I’m mainly concerned about contamination – any tips on how to clean the processor between runs? Should I use separate reels and drums?
I haven’t tried black-and-white film yet, so if anyone has tips on development times, I’d be very grateful.
I mostly use Foma 135 and 120 films, developed according to the FOTOIMPEX table with ATM49 1+1 and a 2-minute pre-wet.
Best regards: Bengt Karlsson
MirkoBoeddecker
Hi Bengt,
I’ve been using the same drums for all processes for several years now and haven’t had any problems.
Of course, I’ve used different storage bottles, but the drum has to go through alkaline developer, acidic stop bath, acidic fixer and wash water, with a final rinse in all processes. So Jobo chose the best chemical-resistant plastics. Always wash the drums thoroughly and you should be fine.
Best regards,
Mirko
bengt
Hello Mirko, and thank you for your help!
I have a couple more questions that perhaps you or someone else out there could help me with:
I have a tank for my Cpa2 in which I can develop a maximum of 8 120 or 7 135 films at a time:
To be able to develop this many films, do I have to use the stock solution of ATM49 or is there a way to use it diluted?
If I have to use the stock solution for 5 films, is it possible to work out a starting point for my development times, bearing in mind that I should increase the development time by 1 minute from the 5th film?
Will the films look different in stock solution compared to 1+1? (I like the way they look in 1+1 :D )
I was suggested to use Rollei High Speed developer for Foma films; I believe this would solve the dilution problem (1+7 or 1+15), but does anyone have any experience with this combination?
Lots of questions, I know… and I thank you in advance for your time…
Best regards and have a lovely Midsummer’s Eve!
Bengt Karlsson
