Thanks, I'll experiment a bit with this.

And yes pure palladium prints can be exquisite, but more usually they are too brown and heavy for my taste. I've settled on an 85-90% platinum / 10-15% palladium coating with potassium oxalate and potassium dichromate. This gives a beautiful, delicate, warm-black with nice clean highlights and good shadows. I've spent a few years getting this process optimised, and I have no desire to lose it. I use pure palladium mostly for teaching or when I want to smother the shadow details.