APPARATUS CE 
Direct Factory Engineering
High-Purity Fused Quartz Apparatus & Scientific Ware
Lovri Quartz Products Co., Ltd. fabricates precision quartz apparatus designed for high-temperature stability up to 1300 °C, exceptional chemical purity (SiO₂ ≥ 99.99%), and resistance to thermal shock. Built strictly to customer engineering drawings and technical specifications.
APPARATUS CE 
Lab Fire-Melted Quartz Glass Physics Apparatus
APPARATUS 
Clear Quartz Combustion Boat with Ring Handle
APPARATUS CE 
Custom Fused Quartz Boat for Biological Research
APPARATUS CE 
Precision High-Temp Quartz Tubing & Adapters
APPARATUS CE 
25-Wafer Clear Quartz Diffusion Boat Carrier
APPARATUS CE 
Fused Quartz Welded & Bended Laser Apparatus
APPARATUS CE 
Heat-Resistant Quartz Glass Retort & Reactor
APPARATUS CE 
Large-Diameter Bended Industrial Quartz Tubes
APPARATUS CE 
Acid & Alkali Resistant Laboratory Quartz Bottles
APPARATUS 
Triple-Bore Quartz Laser Cavity Flow Tube
APPARATUS 
High-Light Transmittance Quartz Flow Cuvette
Manufacturing Precision
Integrated Quartz Apparatus Fabrication Flow
From mineral refining to final polarization stress testing, Lovri Quartz Products Co., Ltd. controls the end-to-end processing pipeline in our 14,271 m² production facility in Lianyungang.
STAGE 01
Raw Refining & Acid Pickling
Natural quartz is mechanically pulverized, rescreened, and hot-acid washed to extract metal residues, achieving guaranteed 99.99% SiO₂ matrix purity.
STAGE 02
Thermal Drawing & Lathe Work
Precision tube drawing followed by flame-torch forming, closing, ground joint fitment, and complex multi-junction tube welding.
STAGE 03
Full Annealing Cycle
Each custom apparatus passes through a computer-controlled electric annealing furnace (soak at 1215 °C) to completely dissipate structural internal stress.
STAGE 04
Polarization Stress Inspection
Every finished piece is verified using a polariscope stress tester to guarantee structural safety during extreme high-temperature and vacuum operation.
Verified Capacity
Factory Equipment & Laboratory Proof
Our dedicated workshop lines allow high-precision manufacturing, tight dimensional verification, and safe handling of fragile quartzware for export.
Apparatus Workshop 
CNC Quartz Machining 
Annealing Furnace 
Polarization Stress Tester 
Flame Sealing Line 
Vacuum Sealing System 
Analytical QC Lab 
Shockproof Packaging Technical Parameters
Fused Quartz Material Properties
Key engineering properties of fused quartz glass used in Lovri laboratory apparatus and semiconductor instruments.
| SiO₂ Purity Level | ≥ 99.99% |
|---|---|
| Density | 2.20 g/cm³ |
| Softening Point | 1730 °C |
| Annealing Point | 1215 °C |
| Continuous Operating Temp | 1100 °C |
| Max Short-Term Temp | 1300 °C |
| Thermal Shock Gradient | 1100 °C into 20 °C water without cracking |
| Acid Resistance | 30x higher than borosilicate; completely inert to HNO₃, H₂SO₄, HCl |
Chemical analyses and spectroscopic transmittance curves (UV–Vis–NIR) available with batch certificates of analysis (COA).
Engineering Questions & Answers
Can Lovri customize quartz apparatus from 2D/3D engineering drawings?
Yes. We specialize in custom manufacturing from CAD drawings (.DWG, .DXF, .STEP) or technical sketches. We offer high precision diamond-tool milling, grinding, glassblowing, and cleanroom vacuum sealing.
How does fused quartz apparatus perform under heavy thermal cycles?
Fused quartz has an extremely low coefficient of thermal expansion (5.5 × 10⁻⁷ /°C). This allows items like combustion boats and diffusion tubes to withstand instant transitions from furnace temperatures above 1100 °C to room atmosphere without shattering.
What testing procedures ensure apparatus integrity before export?
Every batch is thermally annealed to release residual stresses. Then each component undergoes cross-polarized stress analysis, optical wall-thickness gauging, and microscopic inspection for bubbles, seed counts, or joint pinholes.
How is fragile custom quartz glassware packed for international shipping?
Each unit is vacuum sealed or bubble-wrapped with EPE shock-absorbent foam inserts, boxed individually, and palletized inside multi-layer heavy corrugated cartons or custom non-fumigation plywood crates.
Direct Procurement
Request a Technical Quote for Quartz Apparatus
Submit your part drawings, temperature constraints, and volume requirements. Our quartz glass blowers and technical engineers will review your request within 24 business hours.