Hi
I have several copper-tin-lead alloy standards with varying Pb contents(5, 10, 15, 20).
I analyzed them by the SEM-EDS, but it keeps giving me lower Pb concentrations(around 2, 5, 7, 10 individually).
The totals are good around 100 precents, but just inaccurate(tin is the same, bur Pb is...