SGS onsite-verified manufacturing delivering dimensional tolerance down to ±0.01 mm, vacuum-grade sealing surfaces, and deep-ultraviolet to near-infrared light transmittances directly to industrial and institutional labs across Malmö and Greater Copenhagen.
99.98%–99.99% high-purity silica carrier with precision slotting, flame welding, and acid-etched finish. Designed for high-temperature calcination and semiconductor wafer thermal processing.
Micron-scale ID/OD tolerance capillary tubing annealed at 1200 °C. Exceptional thermal shock resistance and chemical durability for industrial and medical laser systems.
Synthetic fused silica exhibiting over 90% transmission down to 185 nm. CNC shaped with double-side 20/10 scratch-dig polish for spectroscopy, photolithography, and UV laser heads.
Precision-lapped thin fused silica sheets. Extreme thickness uniformity and zero bubble inclusions for high-energy laser protective windows and microscopic cover slips.
Large-diameter heavy-wall clear fused silica process tube. Withstands continuous operation at 1100 °C without devitrification in photovoltaic and advanced material furnaces.
Acid-resistant digestion cylinders and optical viewing plates. Zero metallic leaching for ultra-trace elemental analysis, environmental testing, and acid matrix digestion.
Standard OD 10mm / 14mm / 20mm precision drawn tubing for corrosive fluid piping, chemical vapor transport, and semiconductor cleaning manifold assemblies.
Special-doped UV-blocking fused quartz helix and sight tubes. Effectively cuts off harmful deep-UV radiation while maintaining maximum visible transmission in intense pulsed light (IPL) lasers.
When specifying precision quartz viewports and optical windows for demanding scientific systems in Malmö, material selection dictates mechanical lifespan, wavefront distortion, and optical transmission bandwidth. Review our comprehensive material physics guide.
Formed via chemical vapor deposition (CVD) of silicon tetrachloride (SiCl₄) in an oxy-hydrogen flame. Characterized by exceptionally low metallic trace impurities (<1 ppm total metal) and a high hydroxyl (OH⁻) content (typically 800–1200 ppm). Delivers flawless transmission from 185 nm to 2500 nm, making it the definitive choice for excimer lasers (193 nm, 248 nm), UV-C sterilization spectroscopy, and synchrotron beamline diagnostics.
Manufactured by thermal fusion of high-purity natural silica sand in an oxy-hydrogen burner. Offers high internal transmission across the near-UV and visible spectra (220 nm to 2500 nm) with an OH⁻ content between 150 and 200 ppm. JGS2 is the standard industrial grade for observation windows, autoclave sight glasses, and photolithography vacuum chambers requiring high optical homogeneity and mechanical rigidity.
Produced via vacuum electric melting of ultra-refined natural silica crystal. This dry process virtually eliminates OH⁻ ions (<5 ppm), stripping away the intense absorption bands normally observed at 2.2 µm and 2.73 µm. Transmits seamlessly from 260 nm to 3500 nm, providing optimal performance for mid-wave infrared thermal pyrometry, CO₂ laser monitoring, and high-vacuum furnace viewports.
| Physical / Optical Parameter | JGS1 (UV Synthetic) | JGS2 (Standard Optical) | JGS3 (IR Vacuum Melt) | Test Standard / Notes |
|---|---|---|---|---|
| Transmission Spectrum Range | 185 nm – 2500 nm | 220 nm – 2500 nm | 260 nm – 3500 nm | Spectrophotometer @ 10 mm path |
| SiO₂ Purity (wt%) | ≥ 99.999% | ≥ 99.99% | ≥ 99.99% | ICP-MS Trace Impurity Analysis |
| Hydroxyl (OH⁻) Concentration | 800 – 1200 ppm | 150 – 200 ppm | < 5 ppm | FTIR Absorption @ 2.73 µm |
| Reflective Index ($n_d$ @ 589.3 nm) | 1.4585 | 1.4585 | 1.4585 | Abbe Refractometer, 20 °C |
| Coefficient of Thermal Expansion (CTE) | 5.5 × 10⁻⁷ / °C | 5.5 × 10⁻⁷ / °C | 5.4 × 10⁻⁷ / °C | Dilatometry (20 °C to 300 °C) |
| Maximum Working Temperature | 1100 °C (cont.) / 1300 °C (short) | 1100 °C (cont.) / 1300 °C (short) | 1150 °C (cont.) / 1350 °C (short) | Annealing Point ≈ 1215 °C |
| Residual Polarization Birefringence | ≤ 5 nm/cm (Class 1) | ≤ 8 nm/cm (Class 2) | ≤ 10 nm/cm (Class 3) | Sénarmont Polarimeter inspection |
| Surface Quality / Scratch-Dig | 20/10 or 10/5 MIL-PRF-13830B | 40/20 commercial precision | 60/40 mechanical standard | Optical pitch polish available |
For process engineers at pharmaceutical and synchrotron installations across the Malmö region, determining minimum optical window thickness for vacuum viewports or pressurized sight cells is safety-critical. Quartz exhibits a compressive strength of over 1100 MPa, but its tensile strength is limited to approximately 48 MPa due to surface micro-flaw propagation (Griffith criteria). Lovri Quartz calculates safe window thickness using the clamped circular plate formulation:
t = d / 2 × √[ (1.06 × ΔP × SF) / σ_rupture ]
Where t is minimum window thickness (mm), d is unsupported clear aperture diameter (mm), ΔP is differential pressure (MPa), SF is the empirical safety factor (industry standard SF = 4 to 6 for life science sight glasses, SF = 8 for synchrotron ultra-high vacuum installations), and σ_rupture represents modulus of rupture (48–50 MPa). Every customized quartz window exported to Malmö is supplied with precise stress-polarization verification to guarantee zero defect propagation under cyclic vacuum stress.
Malmö’s strategic position within the cross-border Medicon Valley corridor, combined with its direct logistical and academic links to Lund University, MAX IV Laboratory, and the European Spallation Source (ESS), generates extraordinary demand for high-integrity quartz products.
With the world-leading MAX IV synchrotron radiation facility and ESS research infrastructure situated just minutes across the Malmö-Lund district border, researchers require synthetic JGS1 quartz windows featuring CF (ConFlat) metal-to-glass seals, zero bubble inclusions (DIN 58927 Class 0), and vacuum leak rates below 1×10⁻¹⁰ mbar·l/s.
Malmö houses a dense cluster of active pharmaceutical ingredients (API) developers, bioprocessing plants, and clinical diagnostic enterprises. Our CNC-machined quartz 96-well microplates and optical flow-through cuvettes allow full ultraviolet protein quantification down to 200 nm without background autofluorescence.
Malmö’s modern robotic manufacturing, maritime repair, and automotive battery pack assembly facilities deploy multikilowatt fiber and disc lasers. We supply protective quartz cover slides with laser-damage thresholds (LDT) exceeding 15 J/cm² at 1064 nm, providing robust resistance against high-temperature weld spatter.
Sweden's environmental mandates drive Malmö's municipal and industrial water treatment installations. Our clear ozone generator quartz tubes and high-pressure microwave digestion vessels offer absolute chemical inertness to boiling nitric, hydrochloric, and sulfuric acids.
Technical buyers in Southern Sweden face distinct regulatory and operational considerations when importing high-purity quartz apparatus. Here is how modern procurement workflows are evolving.
Scandinavian engineering groups are increasingly mandating full chemical origin verification under EU REACH (EC 1907/2006) and RoHS directives. Sourcing quartz from Lovri guarantees complete material pedigree—each delivery includes spectroscopic purity analysis and polarization birefringence testing certificates to verify annealing compliance.
Malmö's connection across the Öresund link allows seamless multimodal routing. Urgent prototyping batches reach Malmö laboratories within 48 to 72 hours via Copenhagen International Airport (CPH), clearing Swedish customs (Tullverket) efficiently with pre-cleared TARIC classification codes.
R&D spin-offs from Malmö University and Medeon Science Park frequently require bespoke prototypes (1–5 units) before committing to production volumes. We eliminate steep mold charges by employing 5-axis CNC diamond grinding and specialized manual flame lathes directly from STEP/DWG drawings.
Headquartered in Lianyungang—China's global epicenter for silica raw material refinement—Lovri Quartz Products Co., Ltd. controls the complete manufacturing chain from natural crystalline rock to ultra-precision finished optics.
Our comprehensive production infrastructure underwent thorough onsite factory assessment by SGS Group. With over a dozen production steps located within one facility, we guarantee that every batch of quartz glass tubes, plates, rods, and wafer boats adheres to tight dimensional and structural tolerances.
Unlike downstream glass fabricators who purchase third-party blanks, we pulverize, rescreen, and acid-pickle silica sand in-house to guarantee ≥99.99% purity. Our CNC machining center handles complex drilling, slotting, threading, step flanges, and high-precision double-sided optical polishing.
Internal stress is the primary cause of spontaneous failure in quartz viewports subjected to thermal cycling. Every optical component undergoes an extended thermal annealing cycle up to 1215 °C followed by strict polarization stress tester inspection to guarantee low residual stress (<5 nm/cm).
We directly ingest customer technical drawings in 3D STEP, IGES, SolidWorks, or 2D DXF/DWG/PDF formats. Our in-house engineering team conducts complete design-for-manufacturability (DFM) reviews, providing tolerance optimization recommendations that balance cost and optical performance.
Brittle precision quartz components require robust packaging to survive air and sea transport. Every shipment is individually wrapped in anti-static, dust-free barrier foil, encapsulated within custom multi-density polyethylene (EPE) foam, and crated in fumigated export-grade plywood crates.
Technical questions frequently answered for research laboratory managers, equipment manufacturers, and procurement specialists in Malmö and the Skåne region.
Whether you need deep-UV JGS1 windows for spectroscopy, heavy-wall quartz tubes for high-temperature diffusion furnaces, or custom-machined laboratory apparatus, our engineering team is ready to review your drawings and provide technical advice and quotations.