320TXP and HC110, Jobo CPP2

[bruce watson]

I'm down to my last box of 4x5 Tri-X (TXT 4164). When I went to order

more, I found that the new stuff (320TXP) has finally arrived. Prior

to ordering, I went to Kodak's website to lookup the new data sheet to

see what's changed. And change there is!

 

The old film:

http://www.kodak.com/cluster/global/en/professional/support/techPubs/f9/f9.shtml#05

 

The new film:

http://www.kodak.com/global/en/professional/support/techPubs/f4017/f4017.jhtml

 

I use a Jobo CPP2 and a 3010 expert drum. I found with some

experimentation that Kodak's recommendation of 8.5 minutes in HC110B

at 68 F was right on the money for me, with the old film.

 

The new recommendation for this combination, if I read it correctly,

is just 3 minutes! That makes it basically unusable if you want

consistent results - the poor-in and poor-out times approach 20% of

processing time, which is way too much in my experience.

 

I wasn't concerned when they said "a little change in processing

times" but this is major in my book.

 

Clearly the only way to use HC110 with this new film is at a higher

dilution. Anyone had any success with this yet?

[bruce watson]

Opps, my bad. I believed the guy on the phone at Calument. Turns out that this new emulsion has not yet shipped and won't ship for 4x5 until sometime in the first quarter. It is out in 220 though - anyone had any experience with a roll film back and the new emulsion in 220?