Th’ Gaussling is getting an eye-opening introduction to the maddening world high purity products and trace element analysis.  Multiple analytical methods seems to translate to multiple layers of confusion.  I’m a 3-Nines pilgrim in a 4-Nines land of opportunity.  Ya picks yer analytical method and ya stays with it.  Cripes.

It’s an alphabet soup of methods- GDMS, ICPMS, and XRF.  Gonna hafta crack the books again. Watch out. That shadow darkening the library stacks could be cast by a trustee of the f-block.