Ozone-free quartz tubing.clear,cut surface slig-ht purple.The product blocks wavelength<220nm,while transmit over 70% in 253.7nm.Good for all kinds of germcidal lamps.

Dimensional Tolerance
Range of OD WT Siding Out of Round Bow/1220mm
5.0±0.08 1.0±0.06 10% 1.5% 2.5%
12.0±0.10 1.0±0.10 10% 1.5% 2.5%
15.0±0.12 1.0±0.12 15% 1.5% 2.5%
17.0±0.15 1.0±0.15 15% 1.5% 2.5%
18.5±0.15 1.0±0.15 15% 1.5% 2.5%
19.0±0.20 1.0±0.15 15% 1.5% 2.5%
25.0±0.30 2.5±0.20 15% 1.5% 2.5%

Chemical Composition   Unit: ppm

Al Fe K Na Li Ca Mg Cu Mn Pb B cr OH
25 1.5 2.5 2.5 0.6 2.3 0.5 0.1 0.5 0.01 0.2 0.1 ＜10


Physical Properties
Density  20℃ kg.m-3 (×103) 2.2
Coefficient of expansion  25-300℃  ℃-1 (×10-6) 0.56
Softening point     ℃ 1630
Annealing point    ℃ 1180
Strain point        ℃ 1070
Youngs modulus    Pa 7.3×105


Spectral Transmission at 1.0mm Thickness
Nm 185 ＜220 230-280 550 590 780
% 0 0 ≥85 ≥90 ≥92 ≥92