Black vertical lines of spots on 8x10" negative

[malcao]

I got very small black spots running vertical across the negative 8x10".
Seems the verical spots follow the inside "ribbs" of the Jobo 2870 Drum.
This problem occurred the last two times of developing, what could cause this?

The last time I had a new fresh developer.
Film: Fomapan 100
x-tol
Could it be the fix?

 

[bsdunek]

We need a picture to help.

 

[malcao]

Photo
http://gallery.me.com/ifotograf#100059/lines_klr

Note that the dots/lines starts above the emulsion

 

[Vaughn]

Is anything visible on the back of the film -- thinking of incomplete removal of the anti-halation layer where the ribs were touching. Are you using a fix with a hardener?

 

[malcao]

Tetenal Superfix, don't know if it's with hardener.
When I now examine the negative more carefully, I can see that there are very, very small dots all over the negative.
The fix was on it's last run, if that matters.

 

[malcao]

Make sense, made some new fixer hope the problems goes away.
Greg, do you use a drum? If so with what or how do you clean it?

 

[heespharm]

emulsion side was backwards in the drum (emulsion out instead of emulsion in)?????

 

[malcao]

New run today and the negatives looks great, it must have been exhausted fixer, thanks for the help!