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LUMIGLAS® synthetic quartz capillary tube is produced from 6N-grade fused silica with all metallic impurities controlled below 20 ppb (total), verified by ICP-MS analysis. OH hydroxyl content is below 1 ppm. The high UV transmittance and low UV absorption of synthetic fused silica make this capillary the standard substrate for optical fiber preform inner bore tubes, specialty fiber capillary components, photonic crystal fiber and precision UV-grade analytical components. Standard dimensions: OD ≤10 mm, WT ≤1.5 mm, length ≤2000 mm. Custom dimensions available on request.
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LUMIGLAS® YT-2120 is an optical fiber-grade synthetic quartz tube produced from 6N fused silica (SiO₂ ≥99.9999%) with OH hydroxyl content <1 ppm and all metallic impurities controlled below 0.005 ppm (wt). Refractive index (Δn) is customisable for specialty fiber preform design. Available in three sub-grades — liner tube, small sleeve and large sleeve — covering OD φ10–90 mm with lengths up to 3000 mm. Used in OVD, VAD, MCVD and PCVD fiber preform processes and specialty optical fiber manufacturing.
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LUMIGLAS® YT-2121 is a fluorine-doped (F-doped) synthetic quartz tube produced from 6N-grade fused silica with customisable relative refractive index Δn from −0.4% to 0. Fluorine doping lowers the refractive index below that of pure silica — enabling depressed-cladding, W-profile and trench-assisted single-mode fiber preform designs including G.657A/B low-bend-loss fiber. OH hydroxyl content is controlled below 1 ppm. All metallic impurities are below 0.005 ppm (wt). Available in three sub-grades covering OD φ10–90 mm with lengths up to 3000 mm. Custom fluorine concentration and dimensions on request.
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LUMIGLAS® YT-220 is a high-purity large-format synthetic quartz tube produced from 6N-grade fused silica (SiO₂ ≥99.9999%) with all metallic impurities controlled below 0.005 ppm (wt). Designed for semiconductor diffusion furnace outer tubes, oxidation furnace jacket tubes and large-OD sleeve assemblies. Standard OD range φ200–350 mm, wall thickness 6–15 mm, maximum length 1500 mm. Custom dimensions available.
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LUMIGLAS® YT-2230 is a semiconductor-grade synthetic quartz tube manufactured from ultra-high purity fused silica (SiO₂ ≥99.9999%). All major metallic impurities are controlled below 0.005 ppm (wt), making it suitable for diffusion furnaces, CVD process chambers, LPCVD reaction tubes and quartz boat holders in silicon wafer fabrication. Available OD range ≤10 mm to 60–90 mm; lengths to 3000 mm. Custom dimensions and precision grades on request.
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LUMIGLAS® YT-2430 is a low-OH synthetic quartz tube engineered for UV electric light source envelope and discharge tube applications. Produced from synthetic fused silica with ppb-level metallic impurities, it delivers high UV transmittance across the 160–300 nm UV band with proven resistance to UV-induced solarisation. OH hydroxyl content is available in two grades — ~200 ppm (standard) or 400–1000 ppm (customisable) — allowing the UV cut-off wavelength to be matched to the specific lamp design. Standard OD range φ1–90 mm, wall thickness ≤30 mm, maximum length 2000 mm.
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LUMIGLAS® YT-2440 is a high-OH synthetic quartz tube engineered for UV electric light source envelopes operating in the 200–400 nm wavelength range. Produced from 6N synthetic fused silica with OH hydroxyl content of 400–1000 ppm and ppb-level metallic impurities, it delivers high UV transmittance and low UV absorption across the UV-A and UV-B bands — directly supporting longer lamp service life. Standard OD range φ1–90 mm, wall thickness ≤30 mm, maximum length 2000 mm. Custom dimensions available on request.
