http://www.mamut-photo.com/eshop/en/chemicals/88-gold-chloride-1g.htmlI'm not sure where to get the gold chloride here in the UK
Could it be your paper? I recently used a newer batch of a favored paper,and nothing about it was like the previous case. It has now been relegate to the "Do Not Use" drawer.
If it is not your paper,I still strongly suspect your clearing baths. Some papers work well with one clearing chemical, and not with others. Some work well with 3 different baths of 3 different chemicals, and some don't. It does seem necessary to insure the paper is acidic in order to clear. My favorite scheme for most papers is to add a small amount of citric acid to the first rinse after development, followed by 3 baths of EDTA + sodium sulfite. Approximately 75-80% of the stain goes away in the first rinse.
Jim,
The problem only shows itself when I tone (which I pretty much always do) but if I process a print without toning it comes out fine? I have tried three different types of paper (Cot320, Platine & Buxton) and all stain the entire sheet (front & back)
I have tried using EDTA Disodium to clear for an additional 4 minutes and also tried using filtered water to wash before I tone.
I had been toning with Gold Thiourea Toner and it was working fine, but wanted to get more of a brown tone for a particular image.
From what I have read, it's either silver nitrate which is still in the paper reacting with the palladium salts or it's something in the tap water?
I am starting to think that maybe it's the toner itself? The palladium solution is from B&S but it is getting a little old (2006).
David
Please, David, would you mind telling the percent solution of palladium chloride?I am only getting staining when I use toner, and it's the entire sheet of paper.
Your palladium toner recipe, Thomas, is the same as the first one I tried except much more dilute. That one calls for 2g of citric acid + 2g sodium acetate + 30 drops of palladium chloride per 400 ml distilled water.
How long do you tone for?
I also use one shot in a glass flat bottom tray.
David
Please, David, would you mind telling the percent solution of palladium chloride?I am only getting staining when I use toner, and it's the entire sheet of paper.
Your palladium toner recipe, Thomas, is the same as the first one I tried except much more dilute. That one calls for 2g of citric acid + 2g sodium acetate + 30 drops of palladium chloride per 400 ml distilled water.
How long do you tone for?
I also use one shot in a glass flat bottom tray.
David
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