I. Application
Mainly used for Tanning lamps.
II. Product Features
It is a kind of clear quartz glass tube doped with titanium. Different from PQ221, it can absorb all the UV-C, which protect against harmful ultraviolet radiation.The extremely low OH (OH less than 1ppm) prolongs the lamp’s life.
III. Product Type
WGQ342，Deep Cutoff Ozone
IV. Typical Size
| OD Range | ODTolerance | Thickness | WTTolerance | Out ofRound | Siding | Bow |
| 3＜Ф≤10 | ±0.1 | 1～2.0 | ±15% | 2% | 12% | 0.15% |
| 10＜Ф≤20 | ±0.2 | 1～2.5 | ±15% | 1.25% | 12% | 0.15% |
| 20＜Ф≤30 | ±0.25 | 1.5～3.0 | ±15% | 1.25% | 12% | 0.15% |
| 30＜Ф≤40 | ±0.35 | 1.5～4.0 | ±15% | 1.25% | 12% | 0.15% |
| 40＜Ф≤50 | ±0.2 | 2.0～4.0 | ±15% | 1.25% | 12% | 0.15% |
| 50＜Ф≤60 | ±0.5 | 2.5～5.0 | ±15% | 1.25% | 12% | 0.15% |
| 60＜Ф≤80 | ±0.7 | 3.0～5.5 | ±15% | 1.25% | 12% | 0.15% |
| 80＜Ф≤100 | ±0.8 | 3.0～10.0 | ±15% | 1.25% | 12% | 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（℃） |
| 2.1*103 | 5.8*10-7 | 1630 | 1180 | 1070 |
ii. Impurity Value
| Impurity | Na | K | Mg | Li | Ca | Fe | Al | Ti | Cu |
| Typical value | 1.1 | 1.2 | 0.5 | 0.9 | 1.0 | 0.5 | 16.2 | 1.5 | 0.05 |
iii. OH Content
| Typical Value without Baking | After baking |
| 130 | ＜1 |
iv. Optical Properties
