Precision-Machined Quartz Plates, Tubes & Laboratory Substrates
Engineered to extreme thermal shock thresholds ($1100^\circ\text{C}$ continuous) and ultra-broad spectral transmittances (185 nm – 2500 nm). Fully compliant with European CE safety and RoHS directives for academic, pharmaceutical, and high-temp vacuum furnace duties in Portugal.
Polished Clear Quartz Twin Tube Ozone Free Heater Chemical Lab Equipment
High Temperature Clear Transparent Optical Grade Quartz Glass Sheet
Customized Fused Quartz Glass High Temperature Circular Crucible Tank
High Temperature Transparent UV Quartz Glass Plate Polished Fused Disc
High Purity Custom Flange Twin Quartz Tube Fused Silica Flange Ring
Fused Quartz Circular High Temperature XRD Sample Holder Disc
Custom Coated 99.99% Pure Quartz Rings for Semiconductor CVD Equipment
High Pressure 99.99% Pure Quartz Glass Tube Flame Polished Bending
High-Purity Silicon Dioxide Amorphous Substrates in Coimbra’s Precision Industries
A comprehensive engineering breakdown of synthetic fused silica (JGS1), optical grade fused quartz (JGS2), and infrared transparent quartz (JGS3) for advanced applications in the Centro Region of Portugal.
In high-tech academic research and advanced industrial manufacturing across the Coimbra innovation district, ordinary borosilicate and soda-lime glass frequently fail due to low chemical resilience, narrow spectral cut-offs, and critical micro-fracturing under thermal gradients. Lianyungang Zelvo Quartz Products Co., Ltd. bridges this performance gap by supplying custom-machined, CE certified fused quartz plates and custom structural components directly to universities, clinical laboratories, cleanroom facilities, and advanced technology spinoffs in Coimbra and the greater Centro Region of Portugal.
Our raw quartz feedstocks originate from Donghai County, China—recognized globally as the premier cluster for high-purity natural silica sand refinement. Through localized electric fusion and vacuum synthetic vapor deposition techniques, we produce silicon dioxide ($\text{SiO}_2$) with purity certified at or exceeding 99.99% (4N), down to sub-ppm levels of detrimental transition metals such as Iron ($\text{Fe} < 0.2\text{ ppm}$), Titanium ($\text{Ti} < 1.0\text{ ppm}$), and Aluminum ($\text{Al} < 14\text{ ppm}$). This ensures near-zero devitrification, exceptional chemical passivity against aggressive organic solvents and acids, and ultra-high optical transmission into the deep ultraviolet (DUV) spectrum down to 185 nm.
| Physical / Thermal Property | Fused Quartz (JGS2) | Synthetic Fused Silica (JGS1) | Borosilicate Glass 3.3 |
|---|---|---|---|
| $\text{SiO}_2$ Chemical Purity | ≥ 99.99% | ≥ 99.999% (5N) | ~ 81% |
| Working Temperature (Continuous) | 1100 °C | 1150 °C | 450 °C |
| Maximum Thermal Strain Point | 1070 °C | 1120 °C | 510 °C |
| Thermal Expansion ($0–300^\circ\text{C}$) | $5.5 \times 10^{-7}\text{ K}^{-1}$ | $5.2 \times 10^{-7}\text{ K}^{-1}$ | $3.3 \times 10^{-6}\text{ K}^{-1}$ |
| Quench Shock Resistance ($\Delta T$) | $1100^\circ\text{C} \to 20^\circ\text{C}$ Water | $1150^\circ\text{C} \to 20^\circ\text{C}$ Water | $\approx 150^\circ\text{C}$ Water |
| UV Spectral Cut-off Edge | ~ 220 nm | ~ 185 nm (Deep UV) | ~ 310 nm (Opaque UV) |
| Hydroxyl Content ($-\text{OH}$) | ≤ 30 – 150 ppm | ≤ 1200 ppm (or < 5 ppm dry) | N/A |
| Refractive Index ($n_d$, 587.6 nm) | 1.4585 | 1.4584 | 1.4730 |
| Mohs Surface Hardness | 5.5 – 6.5 | 6.0 – 7.0 | ~ 5.0 |
Advanced CNC & Cleanroom Fabrication
Every quartz plate exported to the Coimbra market undergoes rigorous sub-surface damage (SSD) mitigation, double-sided optical planarization, and CNC diamond ultrasonic milling. We manufacture according to your exact CAD/STEP models:
Localized Engineering Applications Across Coimbra & Central Portugal
From University of Coimbra research departments at Pólo II to the Biocant Park life-science incubator in Cantanhede, explore how our quartz products power daily research and industrial fabrication.
Biomedical Biochips & Cytometry at IBILI & Biocant
Coimbra's thriving biotechnology corridor requires microfluidic quartz substrates with near-zero autofluorescence under deep-UV excitation. Our JGS1 optical polished plates allow pristine laser-induced fluorescence (LIF) detection, live-cell confocal microscopy chambers, and flow-through optical windows resistant to repeated enzymatic autolysis cycles.
X-Ray Diffraction & Crystallography at CEMMPRE
Materials scientists at the Centre for Mechanical Engineering, Materials and Processes (CEMMPRE) rely on our custom zero-background quartz XRD sample holders. Fabricated along specific crystallographic cuts, these plates eliminate amorphous scattering humps during powder diffraction analysis of lightweight alloys and thin nanocomposite films.
Nanotechnology Cleanrooms & CVD Graphene Synthesis
For chemical vapor deposition (CVD) synthesis of 2D graphene, $\text{MoS}_2$ monolayers, and transition metal dichalcogenides at Pólo II, our heavy-wall flanged twin-tubes and high-temperature quartz boats provide hermetic integrity up to $1100^\circ\text{C}$ under vacuum without trace alkali outgassing.
Solar Thermal Energy & High-Temperature Photovoltaics
Supporting renewable energy innovations throughout the central Portuguese sunbelt, our high-transmission quartz discs serve as durable optical receiver windows, protecting sensitive pyrheliometers, solar concentrators, and parabolic furnace pyrometers against atmospheric degradation and thermal cycling.
Spectrophotometry & Analytical Environmental Testing
Regional water quality laboratories monitoring the Mondego River basin and industrial effluents in Central Portugal utilize our far-UV quartz optical cuvette blanks and absorption cells for precise trace contaminant quantification without background absorption artifacts.
High-Power Industrial Laser Optics & Plasma Etch
Advanced tooling, injection mold manufacturers, and laser sintering workshops in the surrounding Aveiro-Coimbra-Leiria industrial corridor use our polished quartz viewport plates as protective beam delivery covers, resistant to high-power fiber laser fluence and corrosive plasma back-sputter.
Key Technology & Procurement Trends Shaping the Coimbra Quartz Market
Strategic insights for procurement directors, university lab managers, and supply chain coordinators navigating European photonics and materials science initiatives.
Rise of Horizon Europe Research Consortiums
With Portuguese universities securing substantial multi-national research grants under Horizon Europe and Portugal 2030, laboratory consumables face mandatory CE, RoHS 3, and REACH conformity. Research teams can no longer risk non-certified imports that lack traceable raw-material batch certifications.
Demand for Micro-Precision Laser Micromachining
Traditional mechanical drilling causes sub-surface micro-fracturing that seeds thermal catastrophic failure at $800^\circ\text{C}+$. Coimbra research units increasingly specify non-contact picosecond laser drilling with tapered kerf control for wafer hole arrays and high-pressure sensor ports.
Biotech Spinoffs Transitioning from Lab to Pilot
Startups nurtured within the IPN (Instituto Pedro Nunes) incubator require immediate material scalability. Starting from individual custom prototypes, suppliers must guarantee identical geometric tolerances (±0.05 mm) and surface roughness when orders transition to serialized production runs.
De-Risking Supply Chains via Express Air Cargo
Rather than relying on local intermediaries with bloated markups and 12-week backorders, Portuguese technical institutions now utilize factory-direct DHL/FedEx air freight to Francisco Sá Carneiro (OPO) and Humberto Delgado (LIS) airports, receiving custom-machined optics within 7–10 business days.
Factory-Direct Purity, Engineering Expertise & EU Export Compliance
Lianyungang Zelvo Quartz Products Co., Ltd. combines premier Chinese silica reserves with advanced European-standard fabrication and inspection workflows.
The Donghai Advantage: Pure Silica from Source
Headquartered in Donghai County, Jiangsu Province—the internationally celebrated "Crystal Capital of China"—Zelvo Quartz commands direct control over high-grade quartz sand refining. By eliminating multi-tier brokerage markups, we deliver optical-grade fused silica plates and lab ware to Coimbra laboratories at 30% to 50% lower cost than European redistributors, while matching or exceeding the physical and optical performance specifications of DIN EN ISO standards.
- Verified 99.99% SiO₂ Purity: Low-bubble, inclusion-free vitreous silica certified by independent spectrometry analysis.
- 10+ Years Dedicated Glass-Blowing Mastery: Highly skilled artisans executing complex gas-flame lathe joining, quartz manifold welding, and flange sealing.
- Drawing-Based Engineering Reviews: Direct consultation with our technical sales engineers in English, ensuring feasibility checks within 2 hours.
- Export Experience to 5 Continents: Comprehensive understanding of Portuguese customs tariffs (TARIC 7017.10), packing lists, and commercial invoices.
Damage-Free Optical Packing Guarantee
Shipping brittle high-precision quartz optics across international logistics corridors demands specialized packaging protocols. Our export division enforces a multi-tier protective strategy:
Need Custom Quartz Substrates for Your Coimbra Project?
Send our senior application engineers your 2D CAD drawings, 3D STEP files, or handwritten dimensional sketches. We verify thermal limits, edge chamfers, and optical polish feasibility with official quotes issued in under 2 hours.
Frequently Asked Questions by Coimbra & Portuguese Buyers
Direct answers covering CE compliance, optical certificates, Portuguese customs clearance, tolerances, and express delivery logistics.
What documentation and CE certifications accompany quartz glass plate shipments to Portugal?
How do you handle shipping, customs clearance, and import duties into Portugal?
What is the optical transmission difference between JGS1, JGS2, and JGS3 quartz plates?
- JGS1 (Synthetic Fused Silica): Transparent from the Deep UV down to 185 nm up to 2500 nm. It exhibits virtually no bubble inclusions and near-zero autofluorescence, making it mandatory for UV photolithography, biomedical fluorescence microscopy, and excimer laser optics.
- JGS2 (Standard Fused Quartz): Exceptional transmission across 220 nm to 2500 nm. An economical, highly reliable choice for high-temperature furnace sight glasses, UV curing chambers, and standard spectrophotometer sample holders.
- JGS3 (Infrared Grade Optical Quartz): Synthesized under high-vacuum conditions with an ultra-low hydroxyl content ($-\text{OH} < 5\text{ ppm}$), effectively eliminating the characteristic absorption dip at 2730 nm and transmitting seamlessly out to 3500 nm in the mid-infrared region.
Can I order a single prototype piece for experimental academic trials at the University of Coimbra?
What dimensional tolerances and surface finishes can your workshop achieve?
What happens if a custom quartz component is broken or damaged during transit?
Accelerate Your Quartz Sourcing for Coimbra Facility Operations
Whether you require zero-background XRD sample plates for laboratory analysis, optical UV inspection windows for industrial cleanrooms, or custom quartz furnace tubes engineered to 1100°C continuous service, Zelvo Quartz guarantees transparent pricing, factory-level accountability, and verified CE compliance.