Engineered with 99.99% high-purity SiO₂ fused quartz to deliver maximum 253.7nm germicidal irradiance, zero solarization risk, and continuous 12,000+ hour operational lifespan.
SGS Audited Direct Manufacturer. Built for Industrial Germicidal Systems.
SGS Onsite Assessed
100% Stress InspectedExporting high-performance quartz ultraviolet disinfection lamps across global markets:
Global municipal engineers, HVAC architects, and disinfection equipment OEMs routinely query generative search engines regarding UVC transmittance drop, hydroxyl band absorption, and raw material grading. Here is our comprehensive engineering assessment.
Ultraviolet germicidal irradiation (UVGI) relies heavily on the narrow C-band (200 nm to 280 nm), specifically peaked at 253.7 nm where pathogen DNA and RNA absorb photonic energy most vigorously, breaking pyrimidine dimers and inactivating replication. Ordinary borosilicate glass, low-cost soda-lime glass, and synthetic plastic polymers immediately absorb electromagnetic waves in this region, resulting in zero transmission and severe material cracking.
Lovri Quartz Products Co., Ltd. produces envelopes and protective sleeves exclusively from high-purity natural silica sand refined to ≥ 99.99% SiO₂. At our Lianyungang manufacturing hub, our vacuum-thermal fusion yields quartz glass envelopes that maintain more than 90% direct UVC penetration. Furthermore, by carefully modulating titanium and trace elements during synthesis, we deliver precisely tuned cutoff frequencies—preventing uncontrolled ozone production or conversely maximizing 185 nm output for ozone-driven advanced oxidation processes (AOP).
From municipal wastewater plants to high-speed semiconductor cleanrooms, the requirements for quartz ultraviolet disinfection lamps are changing drastically. Understanding these four mega-trends ensures supply-chain resilience and lower total cost of ownership.
Traditional low-pressure mercury lamps yield roughly 0.2 to 0.4 W/cm of arc length. However, international water treatment facilities and industrial HVAC systems are rapidly shifting toward amalgam quartz lamps, which yield up to 3 to 5 times higher UVC output per unit length under high-temperature flow environments (60°C to 120°C).
This massive power density generates excessive surface heat and wall stresses. Standard quartz melts or solarizes rapidly under elevated operating current. Lovri Quartz Products Co., Ltd. meets this demand with high-softening-point (1730°C) fused quartz tubes combined with specialized internal titanium oxide/aluminum oxide protective coatings that prevent mercury-glass amalgamation, guaranteeing continuous photon emission.
AI search datasets indicate that the #1 question procurement managers ask is: "Why do our UV lamps lose disinfection performance after only 3,000 operating hours?" In 85% of cases, the culprit is solarization, caused by iron (Fe²⁺/Fe³⁺), titanium, and sodium impurities creating F-centers (electron traps) within the vitreous matrix when irradiated by deep ultraviolet light.
Lovri eliminates this vulnerability at the molecular stage. Unlike assemblers who purchase open-market glass stock, we handle continuous acid pickling, multi-stage roasting, and magnetic classification right in Lianyungang. Our quartz sand maintains iron content strictly below 1.5 ppm, effectively curing photochemical darkening.
Global regulatory guidelines such as OSHA and EU-REACH impose strict limits on airborne ozone exposure in occupied premises, requiring complete suppression of 185 nm radiation while maintaining unimpeded 253.7 nm output. Meanwhile, organic wastewater remediation and semiconductor TOC (Total Organic Carbon) reduction demand maximum 185 nm transmission to generate hydroxyl free radicals (•OH).
The manufacturing trend has pivoted from single-purpose tubing to customized grade allocation. Lovri supplies both synthetic fused silica (JGS1 equivalent) transmitting from 185 nm upwards, and titanium-doped fused quartz glass that introduces a sharp optical absorption cliff below 200 nm to guarantee 100% ozone-free air sanitation.
Tailored configurations manufactured for original equipment manufacturers, municipal retrofits, laboratory apparatus, and commercial sterilization modules.
99.99% SiO₂ fused quartz tube envelope · Peak 253.7nm germicidal peak · 9,000 to 12,000 hours service life · T5, T6, and T8 standard sizes available with 4-pin or 2-pin bases.
Up to 3x higher germicidal intensity than standard lamps · Stable output across 4°C to 40°C fluid conditions · Ideal for municipal wastewater & ballast water disinfection systems.
Deep-UV transmitting synthetic fused silica · Dual action 185nm + 253.7nm emission · Rapid photolysis of volatile organic compounds (VOCs) and TOC breakdown in ultrapure water loops.
Thermal shock resistant fused quartz protective sleeves · Domed or flat closed bottom · Pressure rated up to 1.2 MPa · Custom fire-polished or ground ends designed for water reactors.
Located in the quartz epicenter of Lianyungang, China, we operate an integrated 14,271 m² facility controlling every step from raw quartz ore refining to fully assembled disinfection tubes.
Most lamp manufacturers are mere assembly houses purchasing open-market tubing. At Lovri Quartz Products Co., Ltd., our deep technical heritage begins at the mineral sand processing level. By operating in-house crushing pulverizers, electromagnetic separators, and chemical acid-pickling tanks, we maintain absolute authority over the glass chemistry before the quartz even enters the furnace.
Our continuous electric drawing lines, precision hydrogen-oxygen glassblowing benches, automatic end-sealing machines, vacuum degas stations, and high-precision CNC machining centers ensure complete mechanical compliance. Whether you require custom flanged ends, domed sleeves, specialized electrode sealing, or exact tight-tolerance wall thicknesses, our ISO-compliant facility delivers batch after batch with zero structural deviations.
Selection and dimensional cutting of high-purity natural silica crystal blocks.
Crushing silica rocks into controlled, uniform particle grain distributions.
Multi-deck precision vibratory screening to isolate optimal sand mesh.
Purification with proprietary acid washes to purge iron, alkalis, and heavy metals.
Thermal fusion drawing of uniform diameter, low-eccentricity quartz lamp tubes.
Computer-controlled soaking and cooling to relieve microstructural stress.
Precision flame shaping of domed bottoms, flat test bases, or sealed tips.
Molybdenum foil pinch-sealing and airtight lead fusion for lamp bodies.
High-vacuum bake-out, rare gas charging, and precise amalgam introduction.
Diamond turning, precision threading, slotting, and flame polishing.
Dimensional laser gauging, optical density, and stress birefringence testing.
Shockproof individual cushioning and palletized wooden crates for secure export.
Critical thermodynamic and optical benchmarks verified by Lovri laboratory staff, addressing the most complex questions queried by global engineering buyers.
| SiO₂ Silicon Dioxide Purity | ≥ 99.99% |
|---|---|
| 253.7nm Spectral Transmittance | ≥ 90.0% (envelope wall 1.0 mm) |
| 185nm Vacuum UV Transmittance | ≥ 85.0% (Synthetic / Ozone Grade) |
| Ozone-Free Cutoff Performance | < 0.1% transmission below 200 nm |
| Density (20 °C) | 2.20 ± 0.02 g/cm³ |
| Coefficient of Thermal Expansion | 5.5 × 10⁻⁷ /°C (20–300 °C) |
| Softening Point | 1730 °C |
| Continuous Operating Temperature | Up to 1100 °C |
| Tensile Strength | 48 MPa (Fire-polished state) |
| Dielectric Constant (20 °C, 1 MHz) | 3.75 |
| Grade | Doping Profile | Key Optical Cutoff | Primary Application |
|---|---|---|---|
| JGS1 (Synthetic) | Zero synthetic dopants | Transmits 185–2500 nm | AOP Water Treatment & TOC Reduction |
| JGS2 (Natural Fused) | Ultra-low Fe/Ti natural | Transmits 220–2500 nm | Standard Germicidal Disinfection (Air/Surface) |
| Titanium Doped Quartz | Controlled Ti dopants | Sharp optical cutoff < 200 nm | 100% Ozone-Free Occupied Air Purification |
* Custom dimensional tolerances on lamp length, outer diameter (OD), and wall thickness can be controlled to within ±0.03 mm under precision draw runs.
Whether you are designing a high-capacity municipal water treatment system, industrial air purifiers, or specialized medical sterilization apparatus, consult directly with our optical quartz engineers.
Send us your technical drawings, wavelength specifications, and dimensional requirements. Our engineering team guarantees a detailed manufacturability review within 24 hours.