Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Preparation and Certification of K-411 Glass Microspheres

Published

Author(s)

Ryna B. Marinenko, S V. Roberson, J S. Small, Barbara B. Thorne, Douglas H. Blackburn, D Kauffman, Stefan D. Leigh

Abstract

The production and characterization of NBS K-411 glass microspheres in the 3-40 um range for certification as a NIST Standard Reference Material (SRM) are described. EDS quantitative analysis and heterogeneity evaluations of the microspheres were made with an EPMA automated particle analysis procedure. Results for the trimmed and normalized compositions produced mean compositions for the elements Mg, Si, Ca, Fe, and O (determined by stoichiometry) that are in good agreement with the certified values for the K-411 bulk glass (NBS SRM 470 Glasses for Mineral Analysis), but with uncertainties about twice as large. Differences from the bulk are attributable to microsphere geometry and size effects.
Citation
Microscopy and Microanalysis
Volume
6
Issue
No. 6

Keywords

automated EPMA particle analysis, certification of microsphere standards, K-411 glass microsphere standards

Citation

Marinenko, R. , Roberson, S. , Small, J. , Thorne, B. , Blackburn, D. , Kauffman, D. and Leigh, S. (2000), Preparation and Certification of K-411 Glass Microspheres, Microscopy and Microanalysis (Accessed April 16, 2024)
Created December 1, 2000, Updated February 19, 2017