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Home > Spherical Particles > By Material > Glass Spheres and Microspheres > Solid Glass Particles > Borosilicate Glass Microspheres and Spheres

Borosilicate Glass Microspheres and Spheres

Borosilicate Glass is well-known for its durability, low coefficient of expansion, low density, high softening point, high resistance to acids and thermal shock, compared to other glass formulations. The chemical composition consists primarily of silicon oxide (SiO2) and boron oxide (B2O3). Coefficient of thermal expansion for borosilicate glass is about one third of other glass compositions making it resistant to thermal shock, which is critical for those applications where minute deviations in shape might matter.

Specific physical properties vary by product and lot number. The numbers below are general for borosilicate glass and to be used for reference only:

  • True Particle Density: ~2.2g/cc
  • Index of Refraction: ~1.48
  • Annealing Temperature: ~560C
  • Softening Temperature: ~820C
  • Thermal Expansion: ~30x10-7/C
  • Chemical Resistance: resistant to corrosive environments
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Borosilicate glass spheres are known for their superior chemical and thermal resistance, especially critical in demanding applications with harsh environments.

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Products 1-8 of 8
Borosilicate Solid Glass Microspheres 2.2g/cc<br>Many Sizes 20micron to 6150mm
Product Line: BSGMS-2.2
Classified Grades of Borosilicate Solid Glass Microspheres 2.2g/cc
>90% spherical and >90% in size range. Particle Sizes Between 25micron and 6150um (6.2mm)
[more info...]
Price: $131.25-$313.95


Borosilicate Solid Glass Spheres 2.2g/cc<br>Many Sizes 850micron to 6.15mm
Product Line: BSGS-2.2
Classified Grades of Borosilicate Solid Glass Microspheres 2.2g/cc
>90% spherical and >90% in size range. Particle Sizes Between 850um to 6.15mm
[more info...]
Price: $131.25-$183.75


Precision Polished Borosilicate Glass Spheres 2.00mm
Product Line: P-BSGS-2.2
Precision Polished Grades of Borosilicate Solid Glass Spheres.
>99% spherical +/-20um Diameter Tolerance
[more info...]
Price: $91.00-$151.00


Blue Fluorescent Hemispherical Coating on Solid Glass Microspheres 45-53 micron - 100X magnification
Product Line: HCMS-FMB
Fluorescent Blue Hemispherical Coating on Borosilicate, Soda Lime or Barium Titanate Solid Glass Spheres
Color: Bright Blue under daylight and UV illumination (445nm peak emission)
[more info...]
Price: $295.00-$495.00


Green Fluorescent  Hemispherical Coating on Solid Glass Microspheres 45-53 micron - 100X magnification
Product Line: HCMS-FMG
Fluorescent Green Hemispherical Coating on Borosilicate, Soda Lime or Barium Titanate Solid Glass Spheres
Color: Bright Green under daylight and UV illumination (515nm peak emission)
[more info...]
Price: $295.00-$600.00


Orange Fluorescent Hemispherical Coating on Solid Glass Microspheres 45-53 micron - 200X magnification
Product Line: HCMS-FMO
Fluorescent Orange Hemispherical Coating on Borosilicate, Soda Lime or Barium Titanate Solid Glass Spheres
Color: Bright Orange under daylight and UV illumination (606nm peak emission)
[more info...]
Price: $495.00


Red Fluorescent Hemispherical Coating on Solid Glass Microspheres 45-53 micron - 200X magnification
Product Line: HCMS-FMR
Fluorescent Red Hemispherical Coating on Borosilicate, Soda Lime or Barium Titanate Solid Glass Spheres
Color: Bright Red under daylight and UV illumination (607nm peak emission)
[more info...]
Price: $495.00-$550.00


Violet Fluorescent-Coated Glass Microspheres - Various sizes and densities fluorescent Violet glass, fluorescent Violet glass spheres, microspheres, particles, microparticles, beads, UV
Product Line: HCMS-FMV
Fluorescent Violet Hemispherical Coating on Borosilicate, Soda Lime or Barium Titanate Solid Glass Spheres
Color: Bright Violet under daylight and UV illumination (636nm peak emission)
[more info...]
Price: $495.00


Products 1-8 of 8

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About the Company:

Cospheric is a global leader in manufacturing and distribution of precision nanospheres, microspheres, and larger precision spherical particles. Scientists and engineers worldwide rely on us as a proven source to fulfill their needs for microparticles in narrow size ranges, wide selection of colors, densities, properties and formulations. We leverage our extensive technical expertise in micropowders to help each customer find an optimal microparticle solution for their needs. We ship worldwide daily out of our Santa Barbara, CA manufacturing facility.
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