Borosilicate glass

The Standard Reference Material (SRM) consists of wafers measuring approximately 32 mm (1 1/4 in) in diameter and 6 mm (1/4 in) in thickness. For more information, please refer to the SDS and COA.
SRM 93A_cert

SRM 93A_SDS

Borosilicate glass is intended for use in the verification of chemical analysis methods and for calibration of optical emission and x-ray spectrometric analysis methods.

Example analytes are listed below as a reference. Please download a current certificate at nist.gov/SRM for current analytes and certified values.
Silicon dioxide (Si0₂), Boric Oxide (B₂O₃), Sodium oxide (Na₂O), Aluminium dioxide (Al₂O₃), Chlorine (Cl), Zirconium dioxide (ZrO₂), Iron oxide (Fe₂O₃), Iron oxide (FeO), Potassium oxide (K₂O), Titanium dioxide (TiO₂), Calcium oxide (CaO), Magnesium oxide (MgO)

See certificate for values and more details at nist.gov/SRM.

NIST is a registered trademark of National Institute of Standards and Technology

SRM is a registered trademark of National Institute of Standards and Technology