Platinum/Palladium Printing – Issues and Solutions

As a photo educator, I want to make sure I have the best information to pass along to students when it comes to troubleshooting processes. A friend of mine and one of the best platinum printers out there today wrote this excellent pair of articles on a common problem – the dreaded “black spots”.

https://ianleake.com/blog/black-spots/

close-up-of-a-black-spot-320x258

And a viable solution to the problem, at least part of the time:

https://ianleake.com/blog/why-oxalic-acid-combats-black-spots/

Ian does an excellent job of explaining the chemistry behind the issue in a simple, straightforward manner that even a non-chemist like me can understand.

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