Glasses Group

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

# AS7180-AB

Element	Wt %	Oxide	Wt %
O	42.76 ą 0.18
Mg	11.66 ą 0.12	MgO	19.33 ą 0.20
Al	4.91 ą 0.11	Al₂O₃	9.27 ą 0.20
Si	21.20 ą 0.09	SiO₂	45.35 ą 0.20
Ca	10.90 ą 0.14	CaO	15.25 ą 0.20
Fe	7.74 ą 0.16	FeO	9.96 ą 0.20

Sum	99.2 ą 0.3	Sum	99.2 ą 0.4

2mm x 1.5mm x 1mm black prisms

National Bureau of Standards

Name	Description	SPI #	Each
K-0412 Glass	SPI SuppliesŽ Individual Mounted Microanalysis Standard Item	AS7180-AB	$
K-0412 Glass	SPI SuppliesŽ Individual Loose Microanalysis Standard Item	AS7185-AB	$

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