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1.9mm cubes plus uncut discs. Composition = NIST nominal matrix.
National Bureau of Standards
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Polished SRM610 in T100-52 mount
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NIST silicate glass SRM 614 is widely used as a reference material for various microanalytical techniques, and has been nominally doped with 61 trace elements at the 1 ppm level.
A discussion of this SRM, and other glasses of this series, can be found in Hinton (1999).
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