High quality glass microspheres for research and development are always in high demand.? In an effort to better serve scientists Cospheric recently added a complete line of high quality borosilicate microspheres, and microbeads.

Borosilicate glass offers? advantages over standard soda lime glass microbeads.

• Roundness is >90%?? (Soda lime >85%)
• Density is the lowest of most glasses at 2.2g/cc? (Soda Lime 2.5g/cc)
• Very low thermal expansion coefficient? 32×10^-7/?C?? (for 30-300?C)?? (Soda Lime:? 90×10^-7/?C)

The high roundness, and low thermal expansion make borosilicate spheres an excellent candidate for use as spacers in epoxy bond lines, or other applications which require stability over a wide temperature range.

Borosilicate glass spheres are now offered in narrow size ranges from 0.03mm to 0.2mm with greater than 90% of the particles in range.

• 27-32 micron? (0.3mm)
• 32-38 micron (0.035mm)
• 38-45 micron (0.04mm)
• 45-53 micron (0.05mm)
• 53-63 micron (0.06mm)
• 63-75 micron (0.07mm)
• 75-90 micron (0.08mm)
• 90-106 micron (0.1mm)
• 106-125 micron (0.12mm)
• 125-150 micron (0.15mm)
• 150-180 micron (0.18mm)
• 180-212 micron (0.2mm)

Visit Cospheric’s solid glass microspheres product line for more details.