Originally Posted by Mainecoonmaniac
The stain is brownish and usually in the left side. It's in the same shape as the puddle. It intensifies when I wash the print.
May I suggest that you don't put a puddle of Silver Nitrate solution on the paper and if coating by brush redip the brush in the solution as you coat.
“The contemplation of things as they are, without error or confusion, without substitution or imposture, is in itself a nobler thing than a whole harvest of invention”