For this melt? My goal is to be able to quantify the values to a (+/- 5%) accuracy with XRF.I really do not know about the Copper content, but I assume it will still be there.
Either stop the cementing before it is complete or leach out the Copper with Nitric (Pt will follow Pd into solution so I do not know if this is good)
or Ammonia (Hope someone chimes in, if it's not sound advice) to remove the excess Copper.
What purity do you aim for?
Long term? Perfection. Few aspects of life and/or science hold my curiosity like this.
Short term? Melted metal, that will allow me to roughly quantify the recovered amount of PGMs from my raw materials.
Edit for clarification
Edited by moderator, removed double quote.
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