High Purity Transparent Quartz Glass Ampoule Clear Quartz Flask Lab Use
- Purity: SiO₂ ≥ 99.99%
- Process: Flame Bending & Polishing
- Thermal Cap: 1100°C Continuous
Precision Labware Showcase
High-Purity Fused Quartz Ware For Szeged Research & Industry
Manufactured from ultra-pure Donghai quartz sand, our fused quartz basins, crucibles, and customized analytical glassware guarantee zero ionic leaching, near-zero thermal expansion, and unmatched optical clarity across extreme thermal gradients.
XRD Quartz Holder Test Samples High Transmittance Clear Plate Circular Shape
- Grade: Zero-Background Optical
- Tolerance: ±0.05 mm Precision
- Use: X-Ray Powder Diffraction
Clear Refractory Fused Quartz Crucible Bowl Tension Strength 48 N/mm
- Softening Point: 1683°C
- Application: Ashing & Evaporation
- Chemistry: Total Acid Inertness
Factory Hot Sale High Purity Polished Clear Quartz C Shape Bent Custom Tubes
- Dimensions: Customized Diameters
- Finish: Fire Polished Surface
- Processing: CNC Diamond Cutting
Customized Precision Quartz Separating Container Semiconductor Grade 99.999%
- Ultra-Low Heavy Metals (< 0.1 ppm)
- Resistance: Boiling Hydrochloric Acid
- Grade: Class 100 Cleanroom Packed
Custom High Purity Quartz C-shaped BET Surface Area Analysis Tube 1100°C
- Compatibility: BET / Gas Sorption
- Wall Uniformity: High Precision
- Pressure: Vacuum Leak-Tight
SJ 130 QUARTZ Negative Pressure Leak-Proof Vacuum Tube 99.99% SiO2
- Leak Rate: < 1×10⁻⁹ mbar·l/s
- Temperature: 1100°C Annealed
- Joint Type: Ground Quartz Flange
High Purity Micro Capillary Quartz Glass Tube Laboratory Exhaust 2-10mm OD
- Structure: Opaque / Translucent Fused
- Thermal Insulation: Excellent
- Inner Bore: Micro-Calibrated
99.999%
Peak Silica (SiO₂) Purity
1683°C
Thermal Softening Point
5.5×10⁻⁷/K
Thermal Expansion Coeff.
1PC
OEM Prototyping MOQ
TÜVVerified
Rheinland Audit Verified
Engineering Whitepaper
Thermodynamic Behavior of Fused Quartz in Extreme Lab Environments
A rigorous examination of quartz evaporating dishes under high-flux thermal stress, aggressive acid digestion, and trace-element-sensitive analytical regimes in Szeged's leading research facilities.
In chemical analytics, materials synthesis, and photonic sample preparation, the quartz evaporating dish represents the quintessential convergence of refractory stability and chemical passivity. While standard borosilicate glassware (such as Pyrex or Borosilicate 3.3) fails catastrophically when subjected to temperatures exceeding 500°C or rapid thermal quenching, electric-arc and oxy-hydrogen fused quartz dishes maintain continuous dimensional stability up to 1100°C, with intermittent excursion limits reaching 1450°C.
The Thermal Shock Paradox Solved: Fused quartz displays an extraordinarily low linear coefficient of thermal expansion ($\alpha = 5.5 \times 10^{-7} \, \text{K}^{-1}$ between 20°C and 1000°C). Unlike porcelain evaporating basins that crack under uneven heating, a red-hot quartz evaporating dish at 1100°C can be plunged directly into ice water ($0^\circ\text{C}$) without structural fracture, micro-fissuring, or optical crazing.
1. Molecular Structure & Crystallization (Devitrification) Kinetics
Synthetic and natural fused silica consists of a continuous, three-dimensional vitreous network of tetrahedral silicon-oxygen units ($\text{SiO}_4$). Unlike crystalline quartz, fused quartz exhibits short-range structural order but lacks long-range periodicity. When exposed to temperatures higher than 1150°C in an oxidizing atmosphere, thermal relaxation induces devitrification—the phase transformation from metastable amorphous quartz into crystalline $\beta$-cristobalite.
For scientific users across Szeged—specifically within the Department of Physical Chemistry and Materials Science at the University of Szeged (SZTE)—preventing surface devitrification is critical. Surface contamination by alkali ions ($\text{Na}^+, \text{K}^+, \text{Ca}^{2+}$) accelerates cristobalite nucleation by several orders of magnitude. Vulra Quartz mitigates this through a proprietary hydrofluoric-nitric acid deep-etching wash followed by thermal flame annealing, ensuring our evaporating dishes possess zero residual micro-stress and ultra-low surface hydroxyl ($\text{OH}^-$) levels.
| Physical & Thermodynamic Property | Fused Quartz (Vulra SJ-Grade) | Borosilicate Glass 3.3 | Glazed Lab Porcelain | Analytical Platinum (Pt) |
|---|---|---|---|---|
| Silica / Purity Content | 99.99% – 99.999% SiO₂ | ~81% SiO₂ (13% B₂O₃) | Al₂O₃·SiO₂ complex | 99.95% Pt |
| Continuous Operating Temp | 1100 °C | 450 °C | 1050 °C | 1200 °C |
| Maximum Peak Temp | 1450 °C | 520 °C | 1200 °C | 1600 °C |
| Thermal Expansion (20-300°C) | 5.5 × 10⁻⁷ K⁻¹ | 33 × 10⁻⁷ K⁻¹ | ~45 × 10⁻⁷ K⁻¹ | 90 × 10⁻⁷ K⁻¹ |
| Resistance to Boiling Aqua Regia | Absolute (0.00 mg/cm²) | Minor Leaching | Glaze Degradation | Dissolves rapidly |
| Trace Leaching (B, Na, Fe, Al) | < 0.05 ppm (ICP-MS grade) | High (Boron, Sodium) | High (Alumina, Silicate) | Zero (Catalytic risks) |
| UV-Vis Spectral Transmittance | > 90% (200 nm – 2500 nm) | Zero below 310 nm | Opaque (0%) | Opaque (0%) |
2. Chemical Passivity and Trace Metal Immobility
In analytical digestion protocols—such as trace heavy-metal determination via Inductively Coupled Plasma Mass Spectrometry (ICP-MS) or Atomic Absorption Spectroscopy (AAS)—the vessel substrate must not cross-contaminate the analyte. Traditional borosilicate dishes leach substantial boron, calcium, and sodium into boiling acidic matrices. Glazed porcelain releases aluminum, iron, and potassium when exposed to fluorides or heated mineral acids.
Vulra Quartz dishes are chemically inert to all industrial acids—including concentrated hydrochloric ($\text{HCl}$), nitric ($\text{HNO}_3$), sulfuric ($\text{H}_2\text{SO}_4$), perchloric ($\text{HClO}_4$), and aqua regia—at boiling temperatures. The only exceptions are hydrofluoric acid ($\text{HF}$) and concentrated phosphoric acid ($\text{H}_3\text{PO}_4$) above 300°C. For laboratories in Szeged conducting mineral digestion, soil analysis in the Great Southern Plain, or synthetic organometallic evaporation, our quartz basins preserve pristine analyte stoichiometry without sample adsorption.
Regional Ecosystem Integration
Fused Quartz Applications Across Szeged's Scientific Corridor
Szeged has evolved into Central-Eastern Europe’s focal point for cutting-edge laser optics, biophysics, and pharmaceutical development. Discover how our quartz solutions directly empower localized research pipelines.
ELI-ALPS Attosecond Facility
At the Extreme Light Infrastructure (ELI-ALPS) in Szeged, femtosecond and attosecond laser systems demand optics and target containment with damage thresholds exceeding standard specifications. Our quartz evaporating dishes and custom sample holders serve as inert calcination boats for the synthesis of ultra-thin metallic foil targets, chemical vapor deposition (CVD) pre-evaporation, and laser ablation debris capture under ultra-high vacuum (UHV) conditions.
SZTE Chemistry & Nanomaterials
The University of Szeged (SZTE) conducts globally recognized research in heterogeneous catalysis, sol-gel synthesis, and metal oxide nanoparticles (such as $\text{TiO}_2$, $\text{ZnO}$, and quantum dots). Our quartz evaporating dishes facilitate the thermal crystallization and slow concentration of liquid-phase precursors at 800°C–1000°C without risk of boron contamination or substrate fusion.
Biological Research Centre (BRC)
For structural biology, pyrogen-free dry ashing, and biochemical sample recovery at HUN-REN BRC Szeged, our quartz basins offer ultra-smooth fire-polished inner geometries. This non-porous finish allows total extraction of evaporated protein residues and trace enzymatic precipitates while enduring repeated autoclave sterilizations and piranha solution wash cycles.
Advanced Battery & Chemical Quality Assurance
With rapid commercial development around the Szeged Industrial Park and electric mobility battery supply networks in southern Hungary, our high-purity quartz containers are used for lithium cathode trace analysis, electrolyte non-volatile residue (NVR) testing, and high-temperature moisture Karl Fischer titration testing.
Tisza River & Soil Testing
Soil and aquatic analytical monitoring stations across Csongrád-Csanád utilize Vulra fused quartz evaporating dishes for heavy-metal digestion (Arsenic, Lead, Cadmium) under boiling perchloric/nitric acid conditions. Unlike porcelain, quartz guarantees zero cross-batch baseline contamination.
Photovoltaic Cell Etching Quality Control
Solar cell research and thin-film pilot lines in the region rely on our semiconductor-grade evaporating dishes for wafer texturing bath analysis, ultra-pure solvent refluxing, and high-frequency induction heating without electrical loss or thermal breakdown.
Strategic Development Outlook
Szeged Material Sourcing Trends (2025–2030)
An executive synthesis of regional procurement evolutions, technological migrations, and regulatory requirements driving fused quartz adoption across Southern Hungary.
TREND 01
Cleanroom Transition & Particle Control
Szeged laboratories are rapidly upgrading to ISO 5 (Class 100) cleanroom protocols. This has triggered a complete phase-out of glazed porcelain basins, whose microscopically crazed surfaces shed mineral particulate dust during thermal cycles. Fire-polished fused quartz provides an atomically smooth, non-shedding vitreous substrate.
TREND 02
High-Energy Laser Driven Evaporation
With expanded pulse repetition rates at ELI-ALPS, optical sample vessels are increasingly exposed to high-harmonic radiation and intense UV flux. Standard glasses solarize, darken, and absorb laser energy, leading to thermal fracture. Fused quartz dishes with OH < 20 ppm maintain over 90% transmission at 254 nm, eliminating localized absorption.
TREND 03
Total Lifecycle Cost (TCO) Prioritization
Procurement managers at university institutes are abandoning cheap borosilicate dishes that shatter after 3-5 thermal stress cycles. A high-purity fused quartz evaporating dish possesses an operational lifespan 20 times longer than borosilicate under identical 800°C conditions, drastically reducing downtime and replacement expenditures.
TREND 04
Strict EU Traceability & REACH / RoHS Compliance
Hungarian academic grants (NKFIH / Horizon Europe) mandate stringent chemical verification. Vulra Quartz provides comprehensive Batch Certificates of Analysis (CoA), verifying raw materials are free from toxic flux additives, lead, cadmium, and arsenic, fully conforming to EU Directive 2011/65/EU (RoHS).
Verified Foundry Excellence
Why Szeged Laboratories Partner With Vulra Quartz
Direct-from-foundry manufacturing engineered in Donghai—the world's crystal capital—paired with European-standard quality validation and custom drawing support.
TÜV Rheinland Audited
Our production facilities, legal standing, and quality management systems have undergone rigorous on-site audit by TÜV Rheinland, certifying full OEM/ODM precision capabilities.
Donghai Crystal Hub
Located in the heart of China's quartz capital, we possess primary access to the purest natural quartz sand deposits, ensuring stable mineral supply and superior cost performance.
Hot & Cold Processing
From hydrogen-oxygen glass lathes to CNC diamond grinding, drilling, ultrasonic cutting, and optical surface polishing, every step is executed within our integrated facility.
1-Piece Prototyping
Need a non-standard evaporating dish with custom pour spouts, flat bottoms, ground joints, or handle lugs? We fabricate custom laboratory prototypes starting from a single unit.
Procurement Intelligence
Frequently Asked Questions by Szeged Lab Managers
Critical answers regarding technical parameters, international logistics to Hungary, customs clearance, and care instructions for fused quartz evaporating dishes.
What is the maximum thermal ramp rate and cooling gradient for your quartz evaporating dishes?
Because fused quartz has an extremely low coefficient of thermal expansion ($5.5 \times 10^{-7} \, \text{K}^{-1}$), it can withstand instantaneous thermal shock rates in excess of 1000°C/minute. You can transfer a dish directly from a 1100°C muffle furnace into room-temperature ambient air or an ice bath without thermal fracturing. However, for prolonged operational longevity and to avoid sample spattering, standard laboratory thermal ramping between 10°C to 20°C per minute is standard for analytical procedures.
Can your quartz dishes be safely utilized for boiling concentrated hydrofluoric (HF) acid?
No. Hydrofluoric acid ($\text{HF}$) reacts directly with silicon dioxide ($\text{SiO}_2 + 4\text{HF} \rightarrow \text{SiF}_4 + 2\text{H}_2\text{O}$), rapidly dissolving the vitreous quartz matrix even at room temperature. For HF applications, PTFE or PFA vessels must be employed. However, for all other concentrated mineral acids—including boiling $\text{HCl}$, concentrated $\text{HNO}_3$, boiling $\text{H}_2\text{SO}_4$, and hot aqua regia—our fused quartz dishes provide 100% resistance with zero dissolution.
How does Vulra Quartz handle international shipping, fragile packaging, and customs into Hungary?
We operate an export-grade protective packaging protocol developed specifically for optical and scientific quartzware. Each dish is hermetically heat-sealed in dust-free PE bags, wrapped in high-density multi-layer EPE foam cells, and encased in shock-isolated, reinforced double-wall cartons or custom fumigated plywood crates. Shipments to Szeged typically transit via DHL/FedEx Express (3–5 business days) or consolidated air freight to Budapest Liszt Ferenc International Airport (BUD), followed by bonded road transport via the M5 highway directly to your institute cleanroom. We provide complete commercial invoices, packing lists, and correct TARIC export codes (7017.10) for seamless Hungarian National Tax and Customs Administration (NAV) clearance.
What is the difference between transparent fused quartz and opaque silica evaporating basins?
Transparent fused quartz is molten at ultra-high temperatures to completely eliminate microscopic gas bubbles, yielding optical clarity with >90% light transmission from deep UV (200 nm) to infrared (2500 nm). This allows direct visual inspection of crystallization fronts, color shifts, and precipitation. Opaque (translucent) silica dishes contain microscopic entrapped gas bubbles that act as diffuse thermal reflectors. Opaque dishes are frequently preferred for high-temperature furnace ashing and dry calcination where optical transparency is not required, offering a modest cost advantage.
Can you manufacture custom-dimension evaporating dishes with spouts or non-standard flat bases?
Yes. We are a specialized custom manufacturer. We can produce evaporating dishes ranging from micro-analytical diameters (20 mm) up to large pilot-scale basins (500 mm+). We routinely customize wall thicknesses (from 1.0 mm ultra-light response to 5.0 mm heavy-duty industrial walls), fire-polished pouring spouts, hemispherical round bottoms for mantle heating, or precision diamond-ground flat bottoms for magnetic hot-plate stirring.
How should we clean and maintain our quartz evaporating dishes to prevent surface devitrification?
Never handle clean quartz dishes with bare hands prior to high-temperature heating; skin oils deposit traces of sodium ($\text{Na}^+$) and potassium ($\text{K}^+$), which initiate localized devitrification (clouding and cristobalite formation) above 1000°C. Clean dishes using an acid bath (10% $\text{HNO}_3$ or dilute aqua regia), rinse thoroughly with triple-distilled deionized water, and allow to dry in a laminar flow hood. Always wear powder-free nitrile or cleanroom gloves when loading dishes into high-temperature furnaces.
Need Custom Engineered Quartzware for Your Szeged Project?
Whether you require standard 50ml–500ml quartz evaporating dishes or specialized OEM components built to CAD drawings, our technical engineers will review your thermal, chemical, and dimensional specifications within 24 hours.
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