Jobo 3010 Maximum Capacity?

[Brian C. Miller]

You can develop one 135-3 roll (80 square inches) in 473 mL (16 ounces) or two rolls together in 946 mL (one quart) of diluted developer. If you process one 135-36 roll in a 237 mL (8-ounce) tank or two 135-36 rolls in a 473 mL (16-ounce) tank, increase the development time by 10 percent (see the following tables).

Sal, I think that Oren might be using a longer development time for his film. 4oz diluted 1:1 is 8oz, so +10% to development time and then discard.

[Oren Grad]

"Works fine" is a subjective judgement.

Agreed! As always, it's important to run one's own tests.

Brian, I've found that the ISO 400 times for D-76 in the Ilford HP5 Plus data sheet, used for rotary development in Jobo Expert drums on a CPA-2, give me negatives that contact print to my taste with generally near-neutral color head filter settings on Ilford VC papers. Yes, the times are correspondingly longer, per the chart, on those occasions when I use diluted developer. I'm generally using D-76 straight for whole plate and larger, 1+1 for 5x7 and smaller.

[Bruce Watson]

A 3010 drum can at least handle 1 liter. I process 10 sheets of TMY-2 using 1 liter of XTOL 1:3 in mine all the time. That is 250ml of XTOL stock and 750 ml of distilled water. Works a treat.

[mandoman7]

No one has mentioned wear and tear on the machinery, which is a consideration since repair of these is problematic. My machine handles 500ml way better than one liter or more. Yes, there are manufacturer's quantities of developer to address, but testing, IMO, is more conclusive than corporate advice in general.

[venchka]

A 3010 drum can at least handle 1 liter. I process 10 sheets of TMY-2 using 1 liter of XTOL 1:3 in mine all the time. That is 250ml of XTOL stock and 750 ml of distilled water. Works a treat.

I switched from D76 1:1 to Xtol 1:3 for this and other reasons. Works like a charm. Rodinal 1:100 (700ml for 7 sheets) works fine too.

[Keith Tapscott.]

Considering that Kodak no longer recommend dilutions weaker than 1+1 for Xtol and that Bruce and Venchka are happy with their results with the 1+3 dilution, I think that a litre of D-76 diluted 1+1 should be OK.

[venchka]

I'm sure it is. You will know after the first batch. There were other reasons why I tried Xtol and am staying with it. And working my way back to Rodinal as well.
There is no replacement for testing.

[Keith Tapscott.]

Another option for me would be buying the 3006 drum instead, but that means processing only 6 film-sheets at a time.

[dsphotog]

No one has mentioned wear and tear on the machinery, which is a consideration since repair of these is problematic. My machine handles 500ml way better than one liter or more. Yes, there are manufacturer's quantities of developer to address, but testing, IMO, is more conclusive than corporate advice in general.

I agree with John,
I think a litre will strain the Jobo motor...
Might be better to use an expendable Uniroller or Beseler motor base.

[venchka]

By the way, in recent years, Kodak dropped the 8ozs/80 sq. in. notice in the D76 tech. information. I forget how it reads now, but the 8/80 warning was gone the last time I looked.