Quote:
Originally Posted by NonSportDaniel
About two minutes with an FTIR and you would know. Easy peasy.
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That's true.
So you have access to an FTIR machine? Lots of questions out there that could be answered.
The stamp guys are using xrf and sometimes one other, But the sample area isn't usually big enough to get info without having to wreck an already damaged stamp as a reference (Like to have the data for the paper so it can be backed out of the overall stamp leaving the spectrum for the ink.)