Autosports - the best copper I know of is zero crystal 9N copper that is 99.9999999% pure or 7N silver that is 99.99999% pure.
Kenobi -testing for purity is very easy - just weight your banana plug (just the metal part) and then drop into water to calculate volume. Once you get density you know what it is. If banana plug won't give you accurate reading of displaced water - then use 1000 of them. I hope it was helpful.
Kenobi -testing for purity is very easy - just weight your banana plug (just the metal part) and then drop into water to calculate volume. Once you get density you know what it is. If banana plug won't give you accurate reading of displaced water - then use 1000 of them. I hope it was helpful.