High purity&heating-resistance OD range 1.2mm-360mm, Silicon Dioxide> ... -12mm3. type:transparent,translucent,milky-white,red,u-shape,twin tube, special shape, etc.4. OEM allowed5. certificate :CE 6. application ... >90%,OH content less than 50ppm,20ppm,15ppm,10ppm,5ppm Clear Fused quartz rod with CE