1. Scientific Foundations Of Hollow Glass Microspheres one.one Composition and Microstructure 1.one.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are principally composed of borosilicate glass, a fabric renowned for its reduced thermal growth coefficient and chemical inertness. The chemical make-up generally consists of silica (SiO₂, fifty-ninety%),... https://500px.com/photo/1117584681/elementary-by-okok-okok