Minimum volume for Jobo 2523

[Don Wallace]

The minimum volume of developer for 6 sheets of 4x5 in a Jobo 2523 tank is 270 ml. At the risk of sounding like an idiot, is the minimum the same for 1 sheet?

:confused:

[Nick_3536]

Assuming rotary then yes.

[Baxter Bradford]

I have used 200ml for 2 or 3 sheets, but ensure that use outer slots in 2509N holder. Just need to ensure film get covered, use the wings to splash it all over.

[Don Wallace]

use the wings to splash it all over.

Is THAT what those things are for! Thanks folks. Much appreciated.

[dslater]

You can use a 2820 Print Test drum instead of a 2523 drum. The 2509N reel fits inside it the same way and it uses the same 270ml minimum. However, if you only want to process 1 or 2 sheets, then you can take out the reel and use the drum alone for processing. In this configuration, the minimum solution is 40ml. I have done this quite successfully with both PMK Pyro processing and E-6 processing

[Ole Tjugen]

Also check your 2523 drum before buying a 2820: Mine is a 2820! The only difference is the low ribs on the inside of the print drums, and it turns out that many of the film drums have these. They've just put a different sticker on the same drum!

[Mark Carney]

I always use a bit more than the minimum. For this set up I always used 300mm. The math and the measurements were much easier. I standardized on this for all jobo processes with this drum size. It made life simpler.

Mark