UV blocking quartz tube OD range 2.2mm-80mm,UV-1blocking quartz tube ,clear or slight blue ,cut surface light blue .The UV1virtually blocks the UV wavelenghth between 190-320nm,while still has the high tranmittance in visible wavelenghth .UV1 is widely used in many kinds of Human-friendly
　　Dehydroxyl UV blocking quartz tube Dehrodyolization available upon customer request, OH content less than 70ppm.20ppm,10ppm or 5ppm.
　　Low hydroxyl UV blocking quartz tube Dehrodyolization available upon customer request, OH content ess than 70ppm.20ppm,10ppm or 5ppm.