This one's got me puzzled
- Thread starter Chameleon 12
- Start date
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Please tell us what went in the mason jar and we may be able to help assist with what you are seeing.
Elemental.
Elemental.
Chameleon 12
Member
Apologies.
Hot hcl bath twice to remove any lead/tin/x
Complete rinses.
In nitric:
Circa 1957 caps(incinerated, reduced,sifted)
And what I thought were silver on copper pins. Although, 130g or so of said pins were not an alloy/plate but appeared nothing like pt/pd stannous did hit on pt And pd when pins in question were desolved (15g pins in hot nitric and only pins) but when in solution with caps sn2 went from no pd to...
Hot hcl bath twice to remove any lead/tin/x
Complete rinses.
In nitric:
Circa 1957 caps(incinerated, reduced,sifted)
And what I thought were silver on copper pins. Although, 130g or so of said pins were not an alloy/plate but appeared nothing like pt/pd stannous did hit on pt And pd when pins in question were desolved (15g pins in hot nitric and only pins) but when in solution with caps sn2 went from no pd to...
Attachments
Chameleon 12
Member
Now that I think about it, I was low on space so I poured off filtration of my first run in to this vessel (all materials came from same machine) which contained 400g of this board(contents unknown)
Attachments
As far as I can see on screen, there is no values in there.
Dissolved copper that's it.
What is the origin of the source?
Any reason to expect valuables?
You said caps as in capacitors?
What kind, how old and so on.
Modern mlcc, do most of the time not contain precious metals.
We need more information to get a more complete picture of what is happening here.
Dissolved copper that's it.
What is the origin of the source?
Any reason to expect valuables?
You said caps as in capacitors?
What kind, how old and so on.
Modern mlcc, do most of the time not contain precious metals.
We need more information to get a more complete picture of what is happening here.
kurtak
Well-known member
because your solution is green - which is also the color of a stannous test for Pd - instead of doing your stannous test in a spot plate - do this ------
put two "different" drops of your solution on a filter paper - then on one of those drops - put one drop of stannous
take a pic of that & post & tell us which of those drops is the solution "only" & which one is the solution plus stannous
Also - because solution can (often) be green - & Pd stannous tests are green - you can get false positives for Pd when testing with just stannous
Therefore - as a refiner - you should always have DMG in your tool box for testing with to confirm Pd when you think stannous is telling you have Pd
As a refiner of PMs - DMG is a MUST have in order to confirm Pd when you think it's Pd - it will save you from chasing your tail because you think stannous says Pd
Go on line & get it (DMG)
once you get it - this is the way to prepare it for testing
https://goldrefiningforum.com/threads/preparing-dmg.30838/#post-323496
Kurt
put two "different" drops of your solution on a filter paper - then on one of those drops - put one drop of stannous
take a pic of that & post & tell us which of those drops is the solution "only" & which one is the solution plus stannous
Also - because solution can (often) be green - & Pd stannous tests are green - you can get false positives for Pd when testing with just stannous
Therefore - as a refiner - you should always have DMG in your tool box for testing with to confirm Pd when you think stannous is telling you have Pd
As a refiner of PMs - DMG is a MUST have in order to confirm Pd when you think it's Pd - it will save you from chasing your tail because you think stannous says Pd
Go on line & get it (DMG)
once you get it - this is the way to prepare it for testing
https://goldrefiningforum.com/threads/preparing-dmg.30838/#post-323496
Kurt
