Custom Quartz Cuvettes & Flow Cells Manufacturer

Molecular direct bonding (fire-fusion) creates covalent chemical bonds at the atomic level across optical interfaces without using any intermediate organic epoxies or glues. Adhesives break down rapidly under ultraviolet wavelengths (< 260 nm), induce background fluorescence, and dissolve when exposed to aggressive organic solvents like acetonitrile, DMSO, or strong acids. Molecularly fused cuvettes from BY Photonics are completely inert, withstand high temperatures (up to 1,100 °C for synthetic quartz), and guarantee permanent optical seals.

JGS1 (Synthetic UV-Grade Fused Silica): Recommended for deep-UV spectroscopy (185 nm – 2500 nm). It is virtually bubble-free, displays negligible auto-fluorescence, and delivers high UV transmittance (> 85% at 193 nm).
JGS2 (Fused Quartz): Sourced from natural quartz crystal, ideal for standard visible and near-infrared applications (220 nm – 2500 nm) with high mechanical strength.
JGS3 (Infrared Grade Quartz): Low OH content (< 5 ppm), eliminating the prominent water absorption band at 2730 nm and extending transparent transmission up to 3500 nm.

Through high-precision multi-axis CNC grinding and ultrasonic machining, we hold internal aperture cross-sections to ±0.005 mm and optical pathlengths to ±0.001 mm. Channel surfaces are fire-polished or optical-grade lapped to achieve surface roughness below Ra 0.01 µm, preventing turbulence, bubble trapping, or sample carryover.

We accept STEP, IGES, DXF, DWG, and fully dimensioned 2D PDF engineering drawings. Please specify operating wavelengths, chemical media, operating pressures, and critical tolerance zones. Our optical and manufacturing engineers return complete DFM (Design for Manufacturability) reviews and competitive volume quotations within 24 working hours.

Yes. We offer electron-beam and ion-assisted deposition (IAD) thin-film coatings directly onto the exterior window surfaces of cuvettes and flow cells. Options include single-wavelength V-coatings, broad-band anti-reflective (BBAR) coatings (e.g., 200–400 nm, 400–700 nm, or 700–1100 nm), and hydrophobic surface modifications.