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Glass microspheres, also known as glass beads, have been used for at least 100 years, with solid glass beads being manufactured in New York as far back as 1914. In 1922 large quantities of high refractive-index glass beads were produced to coat movie screens. Hollow glass microsphere technology was developed in 1950s as an outgrowth of manufacture of solid glass beads. Since that time, many industries started to rely on solid and hollow glass microspheres as a major component in their products and processes. Initially used primarily as a filler for plastics in the 1960s, glass microspheres found applications in in many industries and thousands of applications including aerospace and military materials, molded plastic components, retroreflective highway signs, oil and gas, recreation, paints and coatings, transportation, construction, mining explosives, personal care, cosmetics and consumer products, amongst others.

In recent years, glass microspheres have experienced excellent growth due to new high-value, high-growth industries that have emerged and the availability of high quality glass microspheres with perfectly sphericity, tight tolerances and particle size distributions available on the market. These industries include biomedical, life sciences, microscopy, automotive, high-tech equipment and specialty applications.

For scholarly articles involving our glass spheres see our Research with Glass Microspheres page.


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Bulk Grades of Solid Soda Lime Glass Microspheres 2.5g/cc. Optional Fluorochemical and Silane Coatings.<br>Mean Diameters 3-6um, 8-12um, 35-45um, 65-75um.
Item #: P2000 -
Price: $52.50-$174.00
Item #: P2000 - View

P2011SL: Average diameter between 3 and 6 microns, with a top size of 20 microns. P2015SL: Average diameter between 8 to 12 microns, with a top size of 36 microns. P2050SL: Average diameter between... [more info...]

Spacer Spheres - Monodisperse Solid Soda Lime Microspheres - Calibration Grade
Item #: S-SLGMS -
Price: $131.25-$312.50
Item #: S-SLGMS - View

Bondline spacer grade solid soda lime glass microspheres are available with tight particle size ranges to achieve bondline thickness (gap) from 15um to 219micron. Bondline spacers are supplied as a... [more info...]

Borosilicate Solid Glass Microspheres 2.2g/cc<br>Many Sizes 20micron to 6150mm
Item #: BSGMS -
Price: $131.25-$313.95
Item #: BSGMS - View

Solid borosilicate glass microspheres are available in a large variety of particle size ranges from 10um to 6150um. Microspheres are supplied as a dry powder. [more info...]

Retroreflective Half-Shell Aluminum Coated Solid Glass Microspheres
Item #: P2453BTA -
Price: $103.95-$557.00
Item #: P2453BTA - View

The spheres are offered in dry powder form with the following coating options: Uncoated - no surface treatment Silane Coating (S2) - for improved dispersion in aqueous systems (~76 degree contact... [more info...]

Hollow Glass Microspheres - Density 0.14g/cc
Item #: HGMS -
Price: $103.95-$215.00
Item #: HGMS - View
Barium Titanate Solid Glass Microspheres and Spheres
Item #: BTGMS -
Price: $52.50-$895.00
Item #: BTGMS - View

Barium Titanate glass spheres offer a higher Refractive Index (n) than most other glass formulations. Depending on the grade of material, reflecting index of Barium Titanate glass is between 1.9 to... [more info...]

Aluminum-Coated Solid Barium Titanate Glass Microspheres 4.2g/cc - 30-100um Diameter
Item #: BTGMS-Al -
Price: $131.25
Item #: BTGMS-Al - View

Physical Characteristics: Coating: Fully Aluminum Coated (~500nm thickness) Core: Solid Barium Titanate Glass Spheres Density: ~4.2g/cc Appearance: Grey powder [more info...]

Conductive Silver-Coated Glass Microspheres, Beads, Particles
Item #: SLGMS-AG -
Price: $103.95-$261.00
Item #: SLGMS-AG - View

Also see: Other Conductive Spheres: Conductive Silver Metal Coated Microspheres Other Soda Lime Spheres: Solid Soda Lime Glass Spheres and Microspheres ... [more info...]

Conductive Silver Metal Coated Hollow Glass Microspheres
Item #: HGMS-AG -
Price: $103.95-$1,555.05
Item #: HGMS-AG - View

Conductive hollow glass microspheres have low particle densities and so provide a significant weight reduction when used in place of conventional conductive fillers such as solid silver particles. A... [more info...]

Precision Polished Soda Lime Glass Spheres - Calibration Glass Spheres - Reference Polished Glass Particles
Item #: P-SLGS -
Price: $47.25-$179.55
Item #: P-SLGS - View

Diameter Tolerance: ±20um Roundness/Sphericity: ≤20um; >99% (Ratio of Width/Length) Density: 2.5g/cc+/-0.1g/cc Index of Refraction: 1.5284 Softening Temperature: 718°C Melting Point: 1445°C... [more info...]

Blue Fluorescent Hemispherical Coating on Solid Glass Microspheres 45-53 micron - 100X magnification
Item #: HCMS-FMB -
Price: $295.00-$495.00
Item #: HCMS-FMB - View

Produced under Pat. 8,501,272 [more info...]

Green Fluorescent  Hemispherical Coating on Solid Glass Microspheres 45-53 micron - 100X magnification
Item #: HCMS-FMG -
Price: $295.00-$600.00
Item #: HCMS-FMG - View

Produced under Pat. 8,501,272 [more info...]

Red Fluorescent Hemispherical Coating on Solid Glass Microspheres
Item #: HCMS-FMR -
Price: $495.00-$550.00
Item #: HCMS-FMR - View

Produced under Pat. 8,501,272 [more info...]

Violet Fluorescent-Coated Glass Microspheres - Various sizes and densities fluorescent Violet glass, fluorescent Violet glass spheres, microspheres, particles, microparticles, beads, UV
Item #: HCMS-FMV -
Price: $495.00
Item #: HCMS-FMV - View

Produced under Pat. 8,501,272 [more info...]

Black Paramagnetic Coated Glass Microspheres - Various sizes and densities Black Paramagnetic glass, glass spheres, microspheres, particles, microparticles, beads
Item #: HCMS-BLK -
Price: $495.00-$595.00
Item #: HCMS-BLK - View

Produced under Pat. 8,501,272 [more info...]

Glass is a natural sustainable material. Glass is “generally recognized as safe” by the U.S. Food and Drug Administration. It is 100% recyclable and can be reused with no loss in quality or purity in most applications.