Manufactured from ultra-pure Donghai quartz sand (≥99.99% SiO₂), our customized quartz funnels, reaction tubes, and optical elements deliver exceptional thermal shock immunity and chemical inertness under heavy industrial cycles.
In high-throughput chemical separation, hot acid digestion, and thermal recrystallization, standard lab glassware fails through thermal cracking and boron ion leaching.
Industrial testing facilities and synthesis plants operating within the Sihanoukville Special Economic Zone (SSEZ) face stringent testing criteria dictated by export quality standards. Traditional Borosilicate 3.3 glassware, while suitable for low-temperature pedagogical applications, fails critically when subjected to exothermic reactions, concentrated nitric/sulfuric acid digestion at temperatures above 300°C, or repeated thermal shocks. A fused quartz funnel manufactured by Zunex Quartz Products Co., Ltd. is fabricated from crystalline silica grains mined and refined in Donghai, achieving an amorphous silicon dioxide purity exceeding 99.99%.
The structural advantage of fused silica lies in its cross-linked tetrahedral atomic network. With an exceptionally low coefficient of thermal expansion of only 5.5 × 10⁻⁷ /°C, our quartz Buchner funnels, sintered disc filtration apparatuses, and powder dosing funnels can be quenched from 1100°C directly into cold water without micro-fracturing or catastrophic failure. For Cambodian testing labs handling coastal petrochemical samples, fertilizer synthesis, and agrochemical quality checks, this eliminates downtime and contamination risks.
| Critical Engineering Metric | Zunex Fused Quartz (JGS2 / JGS1) | Standard Borosilicate 3.3 Glass | Operational Impact for Sihanoukville Labs |
|---|---|---|---|
| SiO₂ Purity Level | ≥ 99.99% SiO₂ (Trace metals < 20 ppm) | ~80-81% SiO₂ (Contains 13% B₂O₃, 4% Na₂O) | Zero boron or alkali cation leaching into high-purity filtrate solutions. |
| Continuous Service Temperature | 1100 °C (Short excursions to 1300 °C) | 450 °C to 500 °C max | Permits direct filtration of molten salts, hot vapors, and slag digestates. |
| Softening Temperature Point | 1683 °C | approx. 820 °C | Maintains dimensional stability inside sintering and calcination exhaust paths. |
| Thermal Shock Resistance (ΔT) | > 1000 °C instantaneous temperature delta | approx. 150 °C – 180 °C delta | Allows rapid flame sterilization and instantaneous cooling during wet assays. |
| Chemical Inertness Profile | Inert to all acids except concentrated HF & hot H₃PO₄ | Susceptible to alkaline etching & acid dissolution | Critical longevity when processing marine brines and aggressive leachates. |
| Pore Sizing for Porous Frit Funnels | Class G0 to G5 (Pore size 1 μm – 250 μm) | Class P1 to P4 standard sintered glass | Flame-fused fused quartz frits eliminate binder binders and prevent sample entrapment. |
Our quartz funnels are available with integral porous quartz discs manufactured via controlled sintering of graded quartz granules. Unlike borosilicate discs that use fluxes, Zunex pure quartz filter discs are welded directly into the funnel body using high-temperature hydrogen-oxygen micro-torches. This creates an unyielding monobloc construction that withstands strong oxidizers including piranha solution, boiling aqua regia, and concentrated perchloric acid without matrix erosion.
Targeted manufacturing, port logistics, and processing zones rely on our custom thermal quartz labware to streamline manufacturing operations and analytical testing.
The Sihanoukville Special Economic Zone hosts expanding assembly and wafer manufacturing facilities. Our quartz powder funnels, chemical dosing pipes, and twin-tube reactors are deployed in silicon wafer etching, chemical vapor deposition (CVD) precursor delivery, and cleanroom acid filtration where particulate-free processing is mandatory.
As Cambodia’s primary deep-water maritime hub, PAS manages intensive petroleum imports, fuel bunkering, and lubricating oil logistics. Analytical laboratories at the port use our high-pressure quartz funnels, distillation heads, and BET sample tubes for ASTM petroleum distillation, sulfur content assays, and trace moisture Karl Fischer titrations.
Coastal testing agencies in Sihanoukville monitor seawater salinity, industrial effluents, and reverse osmosis desalination plants. Our quartz filtration funnels paired with Class G4 quartz frits provide zero-background blank values during heavy metal trace detection (ICP-MS, AAS) using hot nitric acid digestions.
Agricultural processing facilities in coastal Cambodia analyze minerals, cassava starch ash, and fertilizer purity. Quartz Hirsch funnels and quartz combustion boats withstand direct exposure to muffle furnace temperatures up to 1050°C during gravimetric ash analysis without softening or sticking.
Garment factories in the Sihanoukville logistics belt evaluate azo dyes, organic solvent residues, and waterproofing coatings. Quartz separator funnels with ground-in quartz stopcocks avoid grease contamination and are impervious to aggressive organic solvents like toluene, chloroform, and hexane.
With massive infrastructure development across Sihanoukville, regional cement, slag, and metallurgy testing labs rely on our reinforced quartz funnels and ampoules for high-temperature alkaline-earth metal extractions and fluoride-tolerant pyrosulfate fusions.
Cambodia's Industrial Development Policy (IDP) is shifting Sihanoukville from light assembly into heavy processing, high-tech manufacturing, and advanced analytical research.
The operational landscape of Preah Sihanouk Province is experiencing unprecedented capital injection. Under the multi-purpose Special Economic Zone master plan, Sihanoukville is evolving into an international gateway city. Key macro factors driving quartz demand include:
Combining Donghai County’s premier silica deposits with high-precision quartz CNC machining, laser drilling, and artisan flame-welding technologies.
Situated in Donghai County, Jiangsu — the world's epicenter of fused quartz raw materials. We source virgin crystal rocks ensuring SiO₂ content exceeding 99.99%, minimizing bubble density and devitrification seeds.
Our workshop integrates precision industrial CO₂ laser drilling, CNC waterjet shaping, and ultrasonic grooving. We achieve tight dimensional tolerances within ±0.05 mm on custom funnels, frit seals, and flanges.
Whether you furnish STEP, DWG, or PDF schematics, our optical engineers conduct a comprehensive manufacturability assessment within two hours, offering material grade optimization across JGS1, JGS2, and JGS3.
Every quartz funnel and apparatus is cleanroom-washed, vacuum-shrink-wrapped in moisture-barrier PE film, and packed inside custom foam-suspended marine plywood crates engineered for ocean transit into Sihanoukville Port.
Essential answers regarding material grades, import clearance at Sihanoukville Autonomous Port, customs processing, and custom engineering.
Submit your CAD drawing, technical specifications, or request our complete product catalog. Our Donghai technical engineering team will review your parameters and provide a comprehensive quotation within 2 hours.