Ozone free quartz tube

Ozone free quartz tube-clear quartz tube doped with it. Has a strong ability to prevent dense UV radiation but release no ozone
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
(×10
3
)
2.2
Coefficient of expansion 25-300
-1
(×10
-6
)
0.56
Softening point
1630
Annealing point
1180
Strain point
1070
Youngs modulus Pa
7.3×10
5
Spectral Transmission at 1.0mm Thickness
Nm
185
220
230-280
550
590
780
%
0
0
≥85
≥90
≥92
≥92