| Type | JGS1 (ZS-1) | JGS2 (ZS-2) | JGS3 (HS) |
|---|---|---|---|
| Spectral Characteristics | 180-2500nm | 200-2500nm | 260-3500nm |
| Average Transmittance | 90% | 85% | 85% |
| Bubble Class | 0 | 2 | 2 |
| Birefringence | 1-2 | 1-2 | 1-2 |
| SiO₂ Content | 99.9% |
| Density | 2.2 g/cm³ |
| Hardness (Moh's Scale) | 6.6 |
| Melting Point | 1732℃ |
| Working Temperature | 1100℃ |
| Short-term Max Temperature | 1450℃ |
| Visible Light Transmittance | Above 93% |
| UV Transmittance | 80% |