Hello all, I have a problem on my pd prints. It's going to be a bit long as I'll try to describe te process in a comprehensible english The pure palladium prints are covered with a witish veil. Surprinsingly, this veil is much stronger always in the same corner of the print, at the upper right. The paper is Crane's cover. I used the same paper batch for one year and have first encountered the problem at the fall of autumn. I thought it could be a cold snap variant and tried to solve it. It disappeared (I don't know exactly why), and I met it again some days ago. Here are the complete very common process and materials used. I tried of course to isolate the variables, but I don't understand. - Darkroom is about 21-23 degrees C. - Humidity is 55-60 %, now controlled with an ultra-sonic humidifier in the room. I had no u-s humidifier the first time the problem happened and humidified the paper in a humidifying box before coating. - Paper is Crane's cover, single-coated wit rod. I have not the problem with other papers, Simili Japon or COT. The paper is stored at least 12 hours before printing in the darkroom. Sometimes I give some more slow additional humidification after coating with a humiification chamber or a faster one over the u-s humidifier. I sometimes use Crane's paper stored in an another room with lower humidity, humidifying slowly the paper just before coating. Nothing changed. - I use fresh FO, or 8 days old max. - Pd is home made PdCl. Chemicals from Artcraft, 15+15 drops for a 8x10 negative. - Developer is potassium oxalate at 40 degrees C. I thought the problem could occur because when using it hot, the developer could oxydize more quickly, and that it would be better to discard it frequently. As I use it hot, I shortened the time in developer. I tried 30 and 45 seconds, 1 minutes and 2 minutes. No changes : veil. - There is one corner always more withish than other. I understood it was the corner that was directly under tap water when I washed the print after developing (of course the paper is not directly under water, water flows in the tray, always in the same corner) . But here I always forget to watch the temperature of the washing : could it be the problem ? Does one with hot PO use cold or rather hot water for washing after developing ? - As I used HCA for clearing, I thought it could be the problem with pure pd. Usually 1 citric acid bath + 2 HCA baths, 5' each with washing between baths. I tried 3 acid citric baths and EDTA baths : no change, it veils. - Final wash is 30 mn max in a vertical washer. I see 4 possibilities : 1/ Paper. But I printed many times with it without problem. 2/ Hot developer. I changed once and met again the problem. 3/ Washing just after developing. 4/ Clearing. I guess the answer is 2 or 3. Maybe the solution is very simple, but what makes me crazy is that I don't always meet the problem, and I can't isolate the problem. I would be happy to read your comments and suggestions. Thank you.