4x5 TMax in Jobo 3006 drum

[MarkL]

I have a 20 year old Jobo CPP2 and a 3006 drum, which holds 6 sheets of 4x5 film. The drum says to use a minimum of 210ml and a maximum of 450ml of solution. I want to develop TMax 100/400 in TMaxRS, and will be testing for my personal film speeds so I'll be nailing down a time and temp later. But I am looking for how much total solution agitates well, and also how much developer is needed to develop 6 sheets (used 1-shot)? I saw somewhere that John Sexton recommends a 1+9 dilution. From this I assume I mix the stock solution of 1 gallon and dilute that 1+9.

I figured on a pre-soak of maybe 2-3 minutes, then lots of water rinse, 2 separate TF-4 fixes at 3 minutes each, and probably Kodak Hypo Clearing for the fun of it before final rinse and 5 minutes in an archival washer. Any advice/comments appreciated. If anyone can tell me how to find the former Jobo forum I would like to look there also.

Thanks!

 

[lee]

I figured on a pre-soak of maybe 2-3 minutes

Jobo I believe recommends at least a 5 minute pre-soak.

dont forget to use developer to develop the film

lee\c

 

[MarkL]

Yeah, forgot to put that in there!

 

[AllenR]

Mark,

I've been processing TM100 in the 3006 drum for a good while. One of keys to dealing with TM films is consistency. You need to do everything exactly the same, every time. Consequently, whether I'm processing 2 sheets or 6 I use the same developer volume. In my case, that's 500ml, one-shot. As for pre-soak, 3 minutes is what I use and it's plenty. I also use 500ml of fixer, and it just stays in the drum for the entire fixing time.

Whatever times and volumes you decide upon, just stick with them and you'll find that TM is pretty easy to control with the Jobo.

Allen

 

[MarkL]

Thanks Allen!