Introduction
FLH331 is a quartz material made of synthetic sand. Thanks to the high purity, few bubbles, no inclusions, high transmittance, etching resistance, high temperature resistance and other characteristics,FLH331 could be used in advanced semiconductor manufacturing process, optics, chemical processing, ultraviolet and high temperature windows,etc.
Chemical purity
FLH331 Typical Mean Value (ppm)
Al
0.14
B
0
Ca
0.41
Co
0
Cu
0
Fe
0.13
K
0
Li
0
Mg
0.06
Mn
0
Na
0.29
Ni
0
Ti
0
OH
200
UV spectral transmittance
Bubbles and inclusions
The allowable number of bubbles and foreign matter per 100g of glass
The diameter(mm) and number of bubbles
0.03~0.30
0
0.31~0.70
0
>0.7
0
number
0
The diameter (mm) and number of transparent or opaque impurities
0.3~0.7
0
0.8~1.0
0
1.1~3.0
0
number
0
FLH331
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