Ozone Free Quartz Tube(For UV Disinfection Lamp)

OH<8ppm ,
UV wavelength at 253.7nm,
pass through rate average > 93.5%.

Ozone free quartz tube is used for making Ozone free UV sterilizing lamp. it is transparent, cut surface is slight purple. doped with Ti , can prevent radiation of high-density UV rays but generate no ozone. Spectrum transmission at 185 nm is 0 and no ozone generated . UV transmission at 254 nm is more than 90% . the UV sterilizing lamps made by electric melting quartz tube have much longer life than fused quartz tube..

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 Wall Thickness
Nm
185
<220
230-280
550
590
780
%
0
0
≥90
≥90
≥92
≥92