Sorry to disagree. It only works with proper calibration std and your specimen plating is relatively flat.  If your surface is very rough, you got error in reading (unless you use another method to validate)
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----- Original Message -----
From: Kevin Glidden [mailto:[log in to unmask]]
Sent: Thursday, November 01, 2012 10:35 AM
To: [log in to unmask] <[log in to unmask]>
Subject: Re: [TN] ImAg thickness measurement / verification methods

Thanks, everyone, for your responses.  It appears XRF is a valid tool for measuring ImAg thickness.

I still have a need to have a few PCB samples analyzed.  I have some PCBs that show ImAg copper-like discoloration after only 1 reflow cycle on the non-populated side.  I would like to confirm what this discoloration is, and investigate / confirm if it is due to ImAg plating thickness or porosity issues.

Offline responses ok.
Thank you.

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