Ozone-free quartz tubing.clear,cut surface slig-ht purple.The product blocks wavelength&lt;220nm,while transmit over 70% in 253.7nm.Good for all kinds of germcidal lamps.<br>
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Dimensional Tolerance <br>
Range of OD WT Siding Out of Round Bow/1220mm <br>
5.0±0.08 1.0±0.06 10% 1.5% 2.5% <br>
12.0±0.10 1.0±0.10 10% 1.5% 2.5% <br>
15.0±0.12 1.0±0.12 15% 1.5% 2.5% <br>
17.0±0.15 1.0±0.15 15% 1.5% 2.5% <br>
18.5±0.15 1.0±0.15 15% 1.5% 2.5% <br>
19.0±0.20 1.0±0.15 15% 1.5% 2.5% <br>
25.0±0.30 2.5±0.20 15% 1.5% 2.5% <br>
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Chemical Composition&nbsp;&nbsp;&nbsp;Unit: ppm<br>
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Al Fe K Na Li Ca Mg Cu Mn Pb B cr OH <br>
25 1.5 2.5 2.5 0.6 2.3 0.5 0.1 0.5 0.01 0.2 0.1 ＜10 <br>
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Physical Properties<br>
Density&nbsp;&nbsp;20℃ kg.m-3 (×103) 2.2 <br>
Coefficient of expansion&nbsp;&nbsp;25-300℃&nbsp;&nbsp;℃-1 (×10-6) 0.56 <br>
Softening point&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;℃ 1630 <br>
Annealing point&nbsp;&nbsp;&nbsp;&nbsp;℃ 1180 <br>
Strain point&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;℃ 1070 <br>
Youngs modulus&nbsp;&nbsp;&nbsp;&nbsp;Pa 7.3×105 <br>
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Spectral Transmission at 1.0mm Thickness<br>
Nm 185 ＜220 230-280 550 590 780 <br>
% 0 0 ≥85 ≥90 ≥92 ≥92 <br>
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