Compensating developer for rotary processor?

[alanrockwood]

Is there any developer that works as a compensating developer in a rotary processor, ideally one that works at 75 degrees?

Yes, I know the basic ideas behind stand and semi-stand developing, but I am still wondering if compensation is possible with continuous agitation.

Also, might as well throw edge effect into the discussion as well...

Thanks.

 

[dancqu]

Yes, I know the basic ideas behind stand and semi-stand
developing, but I am still wondering if compensation is possible
with continuous agitation.
Also, might as well throw edge effect into the discussion as well...
Thanks.

Compensation with continuous agitation is much compromised.
Local depletion of developer is minimal and bromide inhibition
lessened while high ph levels are maintained. Dan

 

[MikeSeb]

Dan is correct of course, However, I've used divided D76 in a Jobo with good results. It may not meet everyone's definition of a true compensating developer, but it's worth a try.

 

[Baxter Bradford]

Yes there are Alan. There's plenty of info in the archives, suggest you search using Pyrocat and Jobo.

 

[frotog]

I've done tri-x and ab 55 in a jobo. It works.

 

[Edwardv]

I've done tri-x and ab 55 in a jobo. It works.

Do you increase water by 50% for solution A or not? Thank you.

 

[Philippe-Georges]

Apologize me for my ignorance, but what is "ab 55"?
I did a search on this forum and there were no matches.

Philippe

 

[frotog]

Cachet's ab55 is a phenidone version of divided d76. It's panthermic meaning temp has little effect on development. In tanks it's a true compensating developer, giving superior results to diafine and formulary's divided d76. Development can be controlled by making more dilute or less dilute working solutions of the "A" bath. While best results are obtained in tank inversion processing it will indeed work with a jobo. I use mine at the slowest rpm (except when introducing the "b" bath) and yes, I do dilute the "a" solution...anywhere from 1:1 to 1:.5.

 

[steve simmons]

Try Rollo Pyro. It is designed for rotary processing.

steve simmons
www.viewcamera.com