Wholesale UV Cuvette Manufacturer & Supplier

Optical glass (e.g., BK7 or B270) cuts off completely below 320–340 nm. Natural fused quartz (JGS2) transmits effectively down to ~220 nm but exhibits metallic absorption shoulders below that. Synthetic UV fused silica (JGS1) possesses virtually zero metallic impurities, sustaining high transmission (> 80%) down to 190 nm without fluorescence. A rapid verification test is reading the absorbance of pure deionized water at 195 nm; genuine UV fused silica cuvettes will exhibit clean baseline transparency, whereas inferior quartz shows marked photometric absorbance drift.

Adhesive-bonded cuvettes rely on organic resins that dissolve when exposed to common laboratory solvents such as acetone, THF, acetonitrile, or concentrated acids used during cleaning. Furthermore, UV photons below 280 nm gradually break polymer bonds in adhesives, causing leaching, baseline absorbance drift, and leakage. BY Photonics uses direct oxyhydrogen molecular diffusion fusion at 1,150°C, bonding the silica plates into a single physical unit capable of withstanding thermal shocks, autoclave cycles, and aggressive solvents.

Standard commercial tolerance is held strictly at ±0.05 mm. For high-precision quantitative spectrophotometry, our standard production tolerance is ±0.005 mm across path lengths ranging from 0.1 mm to 100 mm. For specialized laser metrology and interferometry, we can achieve ±0.001 mm pathlength accuracy with window parallelism ≤ 10 arcseconds and surface flatness ≤ λ/4 to λ/10 @ 632.8 nm.

Never use abrasive scrubbers or ultrasonic cleaning tanks without specialized rubber racks, as glass-to-glass contact causes scratching and micro-chipping. For organic residues, rinse sequentially with spectroscopic-grade ethanol or isopropanol, followed by HPLC-grade water. For persistent protein deposits, soak in a 3M nitric acid or warm dilute detergent solution (e.g., Hellmanex III) for 15–30 minutes. Always dry using dry filtered nitrogen or lint-free optical lens tissue.

Yes. Over 60% of our production volume is OEM/ODM custom contract manufacturing. We accept STEP, IGES, DWG, DXF, or PDF engineering prints. We accommodate custom flow fittings (1/4-28, M6, GL14 threads), integrated Peltier thermal jackets, black quartz masking, multi-port inlet/outlets, and custom micro-apertures. Our engineering department returns DFM feedback within 24 working hours.

Standard catalog items (standard 10 mm pathlength spectrophotometer cells, fluorometer cuvettes) ship from inventory within 48–72 hours. For custom prototyping, lead times typically run 10–15 business days depending on tooling and geometric complexity. Scaled wholesale production orders (500 to 10,000+ units) generally dispatch within 3–4 weeks with full traceability documentation and batch test certificates.