Dental castings

[Thinksilver]

I have about 3 lbs of dental casting bases and sprues. Scratch tests have been positive for pt acid and 22 kt gold acid. I assume there is also palladium and silver in the alloys. What is the best way to proceed to recover the pmg?

 

[lazersteve]

Check out the sticky post I made called 'Stephan's Dental Gold Experiment'.

It was originally written by a German member (Garage Chemist ?) in his native tongue and I translated it with his permission.

I believe there is also a pdf of the experiment on my website in the documents section.

Steve

 

[Thinksilver]

Thanks for the suggestion. I will attempt the process with 100 g of castings and see how it goes.