I. Application
Ultra high pressure projection lamp, high purity capillary lamp and cinema lamp
II. Product Features
Extremely high purity (the total impurity content is about 10ppm), very low content of alkali metals (the content of alkali metals is less than 0.5 PPM) and the ultimately low OH level (can reach less than 0.5 PPM), very strong anti-crystallization performance. After making lamp, it has merit of small volume, high brightness and long life performance.
III. Product Type
- WQPQ183,UHP quartz tube (medium and low power)
- WQPQ183A,UHP quartz tube (high power)
IV. Typical Size
| OD Range | ODTolerance | Thickness | WTTolerance | Out ofRound | Siding | Bow |
| 6～10 | ±0.15 | 2.0～2.5 | ±0.08 | 0.08 | 0.08 | 0.15% |
V. Physical and Chemical Properties
i. Mechanical and Thermal Properties
| Density（20℃kg/m3） | Thermal Expansion（200-300℃℃-1） | Softening Point（℃） | Annealing Point（℃） | Strain Point（℃） |
| 2.2*103 | 5.6*10-7 | 1670 | 1210 | 1110 |
ii. Impurity Value
| Impurity | Na | K | Mg | Li | Ca | Fe | Al | Ti | Cu |
| PQ183 | 0.3 | 0.4 | 0.2 | 0.6 | 0.5 | 0.3 | 13.0 | 1.1 | 0.05 |
| PQ813A | 0.2 | 0.3 | 0.2 | 0.5 | 0.5 | 0.3 | 8.0 | 1.1 | 0.05 |
iii. OH Content
| Typical Value without Baking | After baking |
| 160 | ＜0.5, ＜1 |