Quartz Furnace Tube
Oversized Quartz Tube
Quartz Boat
Quartz Plate
Quartz Lamp Holder
Quartz Rod
Quartz Ring
Customized Quartz Products
Plasma-Fused Quartz Ingots
Quartz Irregular Shaped Sheets
Quartz Crystal Singing Pyramid
Half-white Coated Short-wave Infrared Quartz Heating Lamp
Leave Your Message
menu
-
Phone
-
Email
-
Whatsapp
top
Phone
top
Engineered from premium fused silica with SiO2 content exceeding 99.995%, these high-performance quartz products support analytical chemistry, laser physics, and material science.
Modern experimental procedures demand strict material compliance. Fused quartz rods deliver irreplaceable thermo-mechanical stability and optical clarity.
Features a continuous operating threshold of 1100°C to 1200°C with a softening point above 1680°C. An ultra-low thermal expansion coefficient of 5.5×10−7/K ensures zero structural fracturing during rapid thermal quenching.
Fabricated through refined multi-step chlorination and vacuum refining to maintain metallic impurities (Fe, Al, Ti, Ca, Cu) under 10-20 ppm, preventing unwanted catalytic bias or background ion contamination in quantitative analytical assays.
Exceptional light transmission exceeds 92% across Deep Ultraviolet (DUV 190nm), Visible (400-750nm), and Near-Infrared (NIR up to 2500nm), making our quartz rods premier optical wave guides for laser spectroscopy and photochemistry.
In modern laboratory automation, advanced semiconductor development, quantum physics, and specialized chemical synthesis, the demand for ultra-pure synthetic and natural fused silica components has surged exponentially. High purity quartz rods serve not merely as basic stirring elements or mechanical supports, but as foundational substrate carriers, optical light guides, vacuum feedthroughs, and structural reaction arrestors. With scientific instruments operating under increasingly aggressive conditions—such as atomic layer deposition (ALD), high-temperature vacuum sintering, plasma-enhanced chemical vapor deposition (PECVD), and sub-ppb trace element digestion—standard borosilicate glassware and commercial grade glasses frequently fail due to devitrification, trace metal leaching, and structural deformation.
The global high purity quartz market has witnessed rapid evolution, propelled by tighter contamination controls in 3nm and 2nm semiconductor fabrication, clean energy photovoltaic wafer slicing, and synthetic biotechnology. High purity quartz rods engineered with silica purities of 99.99% to 99.999% (4N5 to 5N) provide an chemically non-reactive barrier against nearly all concentrated mineral acids (with the exception of hydrofluoric and hot concentrated phosphoric acid), ensuring zero analytical baseline drift during prolonged heating cycles.
When selecting structural or optical rods for research apparatus, laboratory directors and precision engineers evaluate thermo-mechanical fatigue, optical absorption, dielectric strength, and chemical durability. Fused quartz is an amorphous form of silica which differs significantly from polycrystalline alumina ceramics or crystalline sapphire in thermal shock response and micro-machining versatility.
| Physical & Chemical Parameter | High Purity Fused Quartz Rod | Borosilicate Glass 3.3 | Sapphire (Al2O3 Single Crystal) | Alumina Ceramic (99.5% Al2O3) |
|---|---|---|---|---|
| SiO2 Purity Level | > 99.995% (Optical / High-Purity Grade) | ~ 81% (Contains B2O3, Na2O, Al2O3) | N/A (>99.99% Al2O3) | N/A (Polycrystalline) |
| Max Continuous Working Temp (°C) | 1150°C – 1200°C | 450°C – 500°C | 1700°C | 1600°C |
| Softening / Transition Temp (°C) | 1683°C (Softening point) | 820°C (Softening point) | 2040°C (Melting point) | 2050°C (Melting point) |
| Thermal Expansion Coeff. (20-300°C) | 5.5 × 10−7 K−1 | 33 × 10−7 K−1 | 58 × 10−7 K−1 | 72 × 10−7 K−1 |
| Spectral Range (Transmission > 80%) | 190 nm – 2500 nm (DUV to NIR) | 350 nm – 2200 nm | 200 nm – 5500 nm | Opaque / Non-transmissive |
| Dielectric Constant (1 MHz, 25°C) | 3.75 | 4.6 – 5.0 | 9.4 – 11.5 | 9.8 |
| Chemical Resistance to Boiling Acids | Exceptional (Hydrofluoric Acid excluded) | Moderate (Alkali leaching occurs) | High | High |
Within semiconductor epitaxial growth and chemical vapor deposition research, high purity quartz rods serve as wafer push-pull rods, sample boat carriers, and substrate suspending rods. In these vacuum or reactive gas environments (such as silane, ammonia, and hydrogen chlorides at 1000°C+), any standard metal or low-grade glass would introduce heavy metal contamination or collapse under stress. Quartz rods maintain absolute structural straightness and dimensional integrity without outgassing volatile components.
Thanks to their high optical transmission across UV and near-infrared spectra and virtually negligible bubble inclusion ratings (ISO Class 0/1), high purity quartz rods function as critical optical conduits. In laser-induced fluorescence, photochemical water splitting, and Raman spectroscopy, these rods guide intense laser beams into pressurized or corrosive sample chambers without experiencing UV solarization or refractive distortion.
In geochemical, environmental, and pharmacological trace analysis (e.g., ICP-MS and ICP-OES), sample digestion using boiling nitric, perchloric, or sulfuric acid easily leaches boron, sodium, and heavy metals from standard labware. High purity fused silica rods provide an inert tool for sample homogenization, evaporation stirring, and ultrasonic probe shielding, guaranteeing pristine experimental blanks at sub-ppb levels.
Precision thermal dilatometers and high-temperature viscometers depend on quartz rods to transmit displacement and torque from sample furnaces to external transducers. The remarkably low thermal expansion coefficient of fused quartz (5.5×10−7/K) minimizes instrumental baseline errors caused by temperature fluctuations, delivering unmatched measurement repeatability.
As nanoscience and advanced manufacturing advance, the quartz industry is evolving rapidly toward synthetic chemical vapor fusion (yielding purity levels up to 6N with zero OH absorption), ultra-precision CNC laser micro-machining, and automated fire-polishing with robotic arms. These technological improvements enable tight geometrical tolerances (±0.02 mm on diameter, ≤0.05 mm/m camber), defect-free surface finishes, and custom micro-grooved or threaded geometries tailored for next-generation automated laboratory analyzers.
Lianyungang Southeast Quartz Products Co., Ltd., established in 2015, is located in Donghai County, Lianyungang City, Jiangsu Province—a national base for silicon material industry. As a professional manufacturer integrating R&D, design, production, sales and import & export trade, the company relies on the superior high-quality quartz ore resources in Donghai County, deeply engages in the deep processing of quartz glass, and has become a core supplier of quartz consumables for photovoltaic, semiconductor, laboratory, chemical, lighting and other industries with mature production technology, strict quality control system and complete customized services.
The company has standardized production workshops, advanced quartz processing equipment and a professional R&D team, with full-process production capacity from quartz raw material processing to finished product manufacturing. It can produce a full range of quartz products, including high-purity fused quartz tubes, quartz furnace tubes, quartz bell jars, quartz boats, quartz lamp holders, quartz crucibles, quartz instruments (beakers, condensers, distillers, etc.), and tri-acid purification equipment. All products are made of high-purity fused quartz raw materials, featuring excellent high-temperature resistance (up to 1200°C), thermal shock resistance, corrosion resistance, high light transmittance and good electrical insulation performance, which can meet the demanding working conditions such as vacuum environment, high-temperature sintering, atmosphere control and precision experiments.
Adhering to the philosophy of "Quality First, Customer Supreme, Innovation-Driven, Integrity Management", the company has established a complete quality inspection system. All products undergo multiple tests such as helium mass spectrometry leak detection, pressure resistance test and purity test before leaving the factory to ensure stable performance, no impurities and no leakage. Meanwhile, the company provides flexible customized services, and can customize product sizes, structures and specifications according to customers' equipment parameters and process requirements, quickly responding to personalized orders.
With reliable product quality, efficient delivery capacity and thoughtful after-sales service, the products of Lianyungang Southeast Quartz Products Co., Ltd. not only cover all provinces and cities in China, but also are exported to many countries and regions in Europe, America, Southeast Asia, the Middle East, etc., winning wide recognition and trust from customers at home and abroad. In the future, the company will continue to deeply cultivate the field of quartz products, continuously improve technological innovation and production technology levels, and strive to provide global customers with higher-quality and more professional quartz product solutions, contributing to the high-quality development of high-end manufacturing and scientific research fields.
From raw silica refining, flame fusing, and precision CNC cutting to high-temperature vacuum dehydroxylation and cleanroom packaging, every stage guarantees optimal molecular purity.
A professional manufacturer with over 10 years of experience in the quartz industry providing custom components across high-tech industries.
Key technical considerations for laboratory researchers and procurement specialists selecting high-purity quartz rods.
Fused quartz is composed of pure silicon dioxide (>99.99% SiO2) with no added fluxes, giving it continuous operating thermal thresholds up to 1200°C (compared to ~450°C for borosilicate), near-zero thermal expansion (5.5×10−7/K vs 33×10−7/K), superior DUV light transmission down to 190nm, and non-reactive chemical stability without alkali leaching during acid exposure.
Devitrification (crystallization of amorphous SiO2 into cristobalite) is catalyzed by alkaline surface impurities (Na, K, Ca) at elevated temperatures (>1000°C). Our high purity quartz rods undergo strict chemical leaching, fire-polishing, and cleanroom vacuum packaging, minimizing surface trace contaminants and preventing nucleation crystallization even under extended heating cycles.
Yes. Lianyungang Southeast Quartz Products Co., Ltd. provides customized rod diameters from 1mm up to 150mm with diameter tolerances controlled within ±0.05 mm (or ±0.01 mm upon request). End configurations include optical flame polishing, precision ground flat faces, spherical domed ends, conical tips, custom threading, and laser-slotted grooves for specialized research fixtures.
Immerse the rods in a 5% to 10% high-purity nitric acid or hydrochloric acid bath for 1-2 hours to remove trace metal residues, followed by multiple rinses in ultra-pure deionized water (18.2 MΩ·cm) and drying in a Class 100 laminar flow hood. Avoid using abrasive pads or concentrated alkaline solutions which can etch the optical surface finish.
Premium quartz glass products engineered for high-temperature synthesis, semiconductor wafer fabrication, optical analysis, and demanding laboratory research.
