Physical & Chemical Specification
Physical & Chemical Specification
1.)Impurites: [See Table III ]
Table III --- Impurites Table of Clear Fused Quartz Tubing and UV Quartz Tubing Unit:ppm
| Elements |
Al, Ca, Mg, Ti, Fe |
| Clear Fused Quartz Tubes |
60 |
| Elements |
K, Na, Ca, Mg, Fe, Cu, Ni |
| UV Quartz Tubes |
100 |
2.) Thermosstability:
Clear Fused Quartz Tubes: heated for 15 minutes under 1200°C, and than be put into 20 ±5°C water, no cracks, no brokerage, chipout: 3mm Max.
3.) Transmission Rate: ( Spectral Transmission at 1.0mm Thickness ) ( See Table IV )
Table IV
|
Wavelength (nm) Transmission Rate Product |
190-220 | 230-280 | 290-320 | 550 | 760 |
| Clear Fused Quartz Tubes ( % ) | 80 Min | 90 Min | 92 Min | 92 Min | 93 Min |
| UV-1 Quartz Tubes ( % ) | 8 Max | 2 Max | 90 Min | 93 Min | |
| UV-2 Quartz Tubes ( % ) | 0 | 8 Max | 2 Max | 90 Min | 93 Min |
| UV-3 Quartz Tubes ( % ) | 0 | 8 Max | 2 Max | 90 Min | 93 Min |
| UV-4 Quartz Tubes ( % ) | 3 Max | 1 Max | 80 Min | ||
| UV-5 Quartz Tubes ( % ) | 253.7 (nm) 68 - 73 |
90 Min | 93 Min |
4.) Heating Transmission:
Clear Fused Quartz Tubes heated for 2hrs under 1000°C, transmission difference comparing to room temperature less than 4% for 290nm.
5.) Anti- Crystalization:
Clear Fused Quartz Tubes heated for half hours under 1200°C, transmission: 85% Min 500nm wavelength