Oxidation. The only two techniques I've had success with are as follows...
1. Fill tank with two litres of solution (in my case a 3006 Jobo drum) and use a rubber plug to plug off opening and then hand rolled in the trough of my cpp.
2. Nitrogen gas fed in through the "nostrils" of the lift at a rate of 1000 ml/minute during development.
The rib markings are weird as they're not on the emulsion side of the neg. right? How you pre-wash seems to have an effect. I found that, for the pre-wash, filling up drum to the lip with distilled water and then inserting sheet film in slots was the only solution to this problem.
Last edited by frotog; 02-15-2010 at 07:39 PM. Click to view previous post history.