|
Glass bead on common surface |
glass bead on high roundness surface |
Appearance |
colorless, transparent, without obvious bubbles and impurities |
colorless, transparent, without obvious bubbles and impurities |
Size range |
20-140 mesh (109-830 μm) |
10-40 mesh (380-1700 μm) |
Roundness |
≥ 80% |
≥ 90% |
Reflectivity |
≥ 1.5 |
≥ 1.5 |
Density |
2.4-2.6g/cm3 |
2.4-2.6g/cm3 |
Main ingredients |
SiO2 > 70% |
SiO2 > 70% |