Precision-machined high-purity fused silica and quartz ware manufactured in Donghai County, China. Verified via helium mass-spectrometry leak detection, optical surface interferometry, and high-temperature stress-relief annealing.
In advanced microscopy—such as Total Internal Reflection Fluorescence (TIRF), single-molecule confocal scanning, and high-resolution UV Raman spectroscopy—standard soda-lime and borosilicate slides introduce background fluorescence, thermal drift, and UV absorption cutoffs that obscure nanoscale signals.
Standard microscope glass exhibits a steep optical cutoff at approximately 320–350 nm due to intrinsic iron and alkali ion absorption bands. Southeast Quartz synthetic fused silica (JGS1 / Corning 7980 equivalent) transmits >90% from 190 nm through the visible spectrum into near-IR (2100 nm), eliminating excitation loss in ultraviolet fluorescence detection.
Trace heavy metals and rare earth impurities in conventional glass emit spontaneous photon bursts under laser irradiation. Our electric-fused and synthetic fused quartz substrates undergo rigorous mass-spectrometry purity screening, yielding SiO₂ purity ≥ 99.999% and reducing autofluorescence background counts to near theoretical photon detection thresholds.
With an ultralow thermal expansion coefficient of 5.5 × 10⁻⁷ / K, quartz microscope slides withstand continuous operations at 1,100 °C and localized heating gradients up to 1,250 °C without warping. Double-sided CMP polishing guarantees wavefront distortion < λ/4 and surface roughness Ra < 0.5 nm (5 Å).
Tier-1 instrument OEMs, biotechnology consortiums, and semiconductor fabs source quartz slides to eliminate cross-contamination and withstand aggressive operational environments.
Fluorescence-based DNA/RNA sequencers utilize our laser-cut, micro-cavity quartz slides and cover glass. Zero intrinsic nitrogen-vacancy and OH-absorption centers maximize the signal-to-noise ratio during high-throughput sequencing assays.
High-temperature material science demands substrates that survive thermal cycling from liquid nitrogen temperatures up to 1,200 °C. Our fused silica slides provide unwavering mechanical integrity without crystallization or softening.
Precision calibration reticles and particle inspection carriers in 200 mm/300 mm fab lines mandate ISO Class 5 cleanroom particle cleanliness, sub-micron parallelism, and complete resistance to SC-1/SC-2 and piranha etch chemistries.
Fused silica micro-wells and laser-drilled slides resist hot acids, boiling aqua regia, and aggressive organic solvents without leaching boron, sodium, or calcium ions into micro-liter analytical samples.
| Substrate Material Parameter | Southeast Quartz Fused Silica (JGS1) | Standard Fused Quartz (JGS2) | Precision Borosilicate Glass | Standard Soda-Lime Glass |
|---|---|---|---|---|
| Transmission Range (T > 85%) | 190 nm – 2,100 nm (Deep UV-VIS-NIR) | 220 nm – 2,500 nm (Optical UV) | 350 nm – 2,000 nm | 380 nm – 1,800 nm (Visible Only) |
| Autofluorescence Under 365/488 nm | Undetectable / Zero Interference | Extremely Low (<0.05 a.u.) | Moderate Fluorescent Haze | High Background Noise |
| Coefficient of Thermal Expansion | 5.5 × 10⁻⁷ / °C (Max Thermal Stability) | 5.5 × 10⁻⁷ / °C | 32.5 × 10⁻⁷ / °C | 85.0 × 10⁻⁷ / °C |
| Maximum Working Temperature | 1,100 °C Continuous / 1,250 °C Short | 1,100 °C Continuous / 1,200 °C Short | 450 °C Continuous | 120 °C Max |
| Surface Roughness (Ra) | ≤ 0.5 nm (CMP Double-Sided) | ≤ 1.0 nm | 1.5 – 3.0 nm | > 5.0 nm |
| Chemical Leaching Rate (Alkali/Boron) | Zero (< 0.01 ppb Heavy Metals) | Trace (< 0.1 ppm) | Leaches Boron/Sodium Over Time | High Ion Contamination |
From synthetic silicon tetrachloride plasma vapor deposition to multi-axis CNC diamond wire slicing and Class 100 ultrasonic purification, Southeast Quartz scales quality standards to meet evolving semiconductor and bio-photonic roadmap demands.
High-purity quartz ingots are sliced using multi-strand diamond wire saws under temperature-regulated deionized lubrication, eliminating surface micro-fractures. In-house 5-axis CNC ultrasonic mills machine microfluidic channels, counter-bored holes, and precision wells with edge-chipping tolerances under 20 μm.
Our Chemical Mechanical Planarization (CMP) polishing line uses custom cerium oxide and nanometer-grade colloidal silica slurries. This yields exceptional scratch-dig specifications (20-10 or 10-5 per MIL-PRF-13830B), flatness < 1 visible fringe per inch, and zero bubble or inclusion defects across critical aperture zones.
Every microscope slide and cover slip passes through multi-stage megasonic solvent degreasing, hot acid dealkalization baths, and triple-cascade 18.2 MΩ·cm ultra-pure water rinses. Packaging takes place in ISO Class 5 cleanrooms using dust-free wafer cassettes or vacuum-sealed nitrogen pouches.
Southeast Quartz's R&D facility in Donghai is pioneering ultra-thin flexible fused silica coverslips (thickness: 30 μm to 50 μm) for deep-tissue multiphoton microscopy, and developing femtosecond laser-induced selective chemical etching (FLICE) to embed true 3D monolithic micro-capillary networks inside fused quartz slides without adhesive bonding layers.
Headquartered in Donghai County, Jiangsu—the premier raw quartz and crystal processing capital of the Eurasian continent—Southeast Quartz delivers an unmatched synergy of direct material access, engineering agility, and worldwide regulatory compliance.
Our direct integration with high-purity ingot smelting facilities eliminates international raw material procurement bottlenecks. We maintain a permanent standing inventory of JGS1, JGS2, and JGS3 synthetic blocks, enabling fast prototype sampling within 3–5 working days.
Every production batch is certified compliant with RoHS 3 (EU 2015/863), REACH (EC 1907/2006), and conflict-free mineral declarations. Slide products feature lot-traceable inspection sheets containing dimensional verification and UV spectrophotometer transmission curves.
Serving OEM buyers across North America, the European Union, Japan, South Korea, and Southeast Asia. We supply DAP, DDP, and FOB solutions with drop-tested vibration-dampened packaging designed to safely cross transoceanic shipping routes without breakage.
Direct technical answers from our optical metrology engineers and manufacturing specialists.
Explore our complete inventory of factory-direct quartz products manufactured to strict OEM tolerances for semiconductor furnaces, optical instruments, and research laboratories.
Submit your CAD/STEP files, custom dimension blueprints, or target spectral performance requirements. Our Donghai quartz technical team delivers complete design-for-manufacturability (DFM) feedback, material grade recommendations, and tiered factory-direct quotes within 24 hours.
