Standard Reference Materials (NIST SRMs) Group

From the standards library of the SPI Supplies and the C. M. Taylor Company

# AS9010-AB

SRM93a Borosilicate Glass

National Bureau of Standards origin with Certificate of Analysis

Now the National Institute of Standards and Technology, NIST, Gaithersburg, MD USA
ElementWt % OxideWt %
B 3.90B2O3 12.56
O 53.8
Na 2.95Na2O 3.98
Mg 0.003MgO 0.005
Al 1.21Al2O3 2.28
Si 37.8SiO2 80.8
Cl 0.060Cl 0.060
K 0.012K2O 0.014
Ca 0.01CaO 0.01
Ti 0.008TiO2 0.014
Fe 0.020Fe2O3 0.028
Zr 0.031ZrO2 0.042

Sum 99.8 Sum 99.8

2 x 2 x 1.2mm prisms and uncut slices
National Bureau of Standards

Name Description SPI # Each
SRM93a Borosilicate Glass SPI SuppliesŪ Individual Mounted Microanalysis Standard Item AS9010-AB $
SRM93a Borosilicate Glass SPI SuppliesŪ Individual Loose Microanalysis Standard Item AS9015-AB $

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