I have a jobo cpa2 with out the instructions what rotation speed should i use for 8x10 b&w.
Thanks Terry
I have a jobo cpa2 with out the instructions what rotation speed should i use for 8x10 b&w.
Thanks Terry
On your CPA2's rotation speed dial, "F" for film. Some recommend even slower with certain developers which are prone to rapid oxidation. However, depending on the amount of chemistry used, speeds slower than "F" introduce the possibility of overloading the motor; something to keep in mind.
I've standardized on the number 4 setting for B&W sheet film processed in standard developers like D-76 or HC-110B. Works fine for me.
Depends on what motor your processor has. See my second post in
this thread.
I'm not sure what tanks you are using but the instructions on an Expert Tank is to aim for 50 rpm.
You need to move the white finger lever to prevent it from reversing the drum direction and then count the number of rotations of the drum in 60 s.
For what it's worth - I use speed setting F on a CPP - but as others have said - it depends on which motor your processor has been fitted with.
Martin
I wish someone hadn't stolen my CPA2 and the 3K in accessories and tanks and bottles with it. I REALLY miss, and NEED it desperately. It's really a fantastic processor. I've run literally more than ten thousand rolls of 220 and 35mm color negative film in it.
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