A
Anonymous
Guest
Processed approximately 2 lbs of contacts, from various sources, here are the results.
The silver is in solution waiting filtration/ precipitation, using copper
The heavy contacts from Manitoba Hydro have turned black in color, using side cutters found these to be hard and brittle still metallic inside with some weight left to them, non magnetic.
Then some other large contacts did not dissolve, using side cutters found these to be soft almost what you would expect from pure silver. The outside color is matted with the inside a bright silver color, these have weight to them and are non magnetic.
Then there are some foils, bright and shinny, positive for magnetic.
Then we have some gold buttons with some fines floating.
Here is what I have done, processed the 2lb lot using 50/50 nitric with water. Then when I discovered the undissolved contacts decanted the solution adding 70% nitric to the remaining contacts overnight.
Now I would like to know what metal to expect from these contacts which did not dissolve.
The silver is in solution waiting filtration/ precipitation, using copper
The heavy contacts from Manitoba Hydro have turned black in color, using side cutters found these to be hard and brittle still metallic inside with some weight left to them, non magnetic.
Then some other large contacts did not dissolve, using side cutters found these to be soft almost what you would expect from pure silver. The outside color is matted with the inside a bright silver color, these have weight to them and are non magnetic.
Then there are some foils, bright and shinny, positive for magnetic.
Then we have some gold buttons with some fines floating.
Here is what I have done, processed the 2lb lot using 50/50 nitric with water. Then when I discovered the undissolved contacts decanted the solution adding 70% nitric to the remaining contacts overnight.
Now I would like to know what metal to expect from these contacts which did not dissolve.