JGS1 Quartz Round Plates
High-purity JGS1 quartz round plates for optics and high-temperature use, factory-direct from Scuvette.
JGS1 Quartz Round Plates
Japanese-imported JGS1 (Tosoh fused silica) round plates — the industry reference for high-purity, deep-UV-grade optics. Available in 73 stock diameters diameters from 2 mm to 50 mm, thicknesses 0.1–6 mm. Custom sizes and shapes on request.
Why JGS1?
- Deep-UV grade — usable from 200 nm (some lots 190 nm), the cleanest cut-off among common quartz grades
- Highest purity — Japanese imported synthetic fused silica, OH < 5 ppm, metal impurities < 1 ppm
- High temperature — continuous service up to 1100 °C, softening point 1680 °C
- Tight tolerance — ±0.05 mm on edge dimensions; thickness per spec
- Optical-grade surface — 40-60 scratch-dig, ready for spectroscopy use
Common Specifications (All Variants)
All 59 Variants (Grouped by Side Length)
Quick jump: 3mm×3mm (1) · 4mm×4mm (1) · 5mm×5mm (2) · 6mm×6mm (1) · 8mm×8mm (1) · 9mm×9mm (1) · 10mm×10mm (8) · 11mm×11mm (1) · 12mm×12mm (5) · 15mm×15mm (3) … +10 more
Stock Sizes & Prices
All 73 stock sizes listed below. Filter by diameter or thickness, sort any column, and add to cart directly. Custom diameters and thicknesses on request.
| Image | Diameter | Thick | Material | Wavelength | Part No. | Price | Action |
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About JGS1 Fused Silica
JGS1 is the designation used in Japan (Japan Glass Specite) for the highest-purity grade of synthetic fused silica, manufactured by vapor-phase hydrolysis of silicon tetrachloride. With metal impurity content below 1 ppm and OH content below 5 ppm, JGS1 offers the widest spectral transmission range of any common optical material — from deep UV (cut-off ≈ 200 nm) through visible and into the near-IR (up to 2500 nm).
JGS1 plates are ideal for: UV spectroscopy windows, high-temperature viewports, semiconductor wafer carriers, optical filters, laser components, and analytical instrumentation. The combination of high purity and low thermal expansion (5.5 × 10−7 /°C) makes them suitable for precision optical assemblies and rapid thermal cycling.
Custom Sizes & Bulk Orders
Need a size or thickness not listed here? We can cut JGS1 plates to your specification (tolerance ±0.02 mm available on request) and offer volume pricing. Common requests include round plates cut from squares, drilled apertures, and AR-coated windows.