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  BSGMS - Borosilicate Glass Spheres - Classified Grades
  Clear Solid Glass Borosilicate Microspheres 30um - 10g
45-53um glass microspheres
  
Borosilicate Glass Microspheres
Clear Solid Glass Spheres
  • Supplied as dry powder
  • Material: Borosilicate glass
  • Degree of Roundness >90%
  • Particles in range >90%
  • Density: ~2.2g/cc
  • Index of refraction: 1.48-1.49
  • Particle sizes: 27um to 212micron
  • Crush Strength: >27,000psi  (90% survival)
  • Information on Borosilicate Glass
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Item# Item Name Price: Qty Add
BSGMS 20-27um - 1g 1.0g - Borosilicate Glass Microspheres 20um-27um $197.00
BSGMS 27-32um - 10g 10g - Borosilicate Glass Microspheres 27um-32um $184.00
BSGMS 32-38um - 10g 10g - Borosilicate Glass Microspheres 32um-38um $169.00
BSGMS 38-45um - 10g 10g - Borosilicate Glass Microspheres 38um-45um $138.00
BSGMS 45-53um - 10g 10g - Borosilicate Glass Microspheres 45um-53um $125.00
BSGMS 53-63um - 10g 10g - Borosilicate Glass Microspheres 53um-63um $125.00
BSGMS 63-75um - 10g 10g - Borosilicate Glass Microspheres 63um-75um $125.00
BSGMS 75-90um - 10g 10g - Borosilicate Glass Microspheres 75um-90um $125.00
BSGMS 90-106um - 10g 10g - Borosilicate Glass Microspheres 90um-106um $125.00
BSGMS 106-125um - 10g 10g - Borosilicate Glass Microspheres 106um-125um $125.00
BSGMS 125-150um - 10g 10g - Borosilicate Glass Microspheres 125um-150um $125.00
BSGMS 150-180um - 10g 10g - Borosilicate Glass Microspheres 150um-180um $145.00
BSGMS 180-212um - 10g 10g - Borosilicate Glass Microspheres 180um-212um $175.00
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Technical Specs:
Chemical Composition (by weight):
  • Silica (SiO2)....................70-80%
  • Boron Oxide (B2O3)........10-15%
  • Sodium Oxide (Na2O).......5-10%
  • Aluminum Oxide (Al2O3)...2-5%
Physical Properties:
  • Specific Gravity............................2.2g/cc
  • Bulk Density................................1.2g/cc (71lbs/ft3)
  • pH in water @25°C:......................7.0
  • Softening Temperature.................830°C
  • Index of Refraction......................1.47-1.48(nd)
  • Coefficient of Thermal Expansion...32x10-7/°C (30-300°C)
  • Crush Strength (90% Survival).......27,210 psi using Carver Press

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