JGS3-grade quartz cuvettes for NIR spectroscopy 700–2,500 nm. Compatible with Foss, Buchi, Bruker, MicroNIR. Wavelength × path length × material guide.

Quartz flow cells for HPLC UV/FLD detection, UPLC, FIA, process monitoring, and stopped-flow kinetics. 0.5–10 mm path lengths, two-way and four-way light, 50+ stock SKUs.

Large window quartz cuvettes solve beam-clipping in wide-beam spectrophotometers, integrating spheres, and tall-body kinetics. Complete selection guide + 20+ stock SKUs.

A DLS / particle-sizing cuvette is a specialty quartz cell with a flat polished bottom and four optically polished sides, designed for dynamic light scattering instruments (Malvern Zetasizer, Brookhaven NanoBrook, Wyatt DynaPro) that measure 90° or backscatter intensity. Standard DLS cells are 12.5 × 12.5 × 45 mm with 800 µL volume; sub-microliter sizing requires

A thermostatted cuvette is a sealed quartz cell designed to hold sample at a precisely controlled temperature (±0.1 °C) during a UV-Vis or fluorescence measurement, used in DNA melting curves (40–95 °C), enzyme kinetics (4–60 °C), and protein denaturation studies. The cell is mounted in a Peltier-cooled or water-jacketed holder; a screw cap prevents evaporation,

A sub-millimeter cuvette is a quartz cell with path length below 1 mm (typically 0.01, 0.05, 0.1, 0.2, or 0.5 mm), designed for high-absorbance samples where a standard 10 mm cell would saturate the detector. Concentrated proteins (≥ 50 mg/mL), undiluted dyes, neat solvents in NIR, and high-OD pharma intermediates all require sub-mm cells to

The cuvette-vs-NanoDrop decision is primarily about sample volume, repeat measurement, and accuracy requirements. NanoDrop pedestal spectrophotometers measure 1–2 µL drops at 0.05–1.0 mm pseudo-path-lengths and excel at fast nucleic-acid quantification (A260/280), but show 2–5% variability between drops. Cuvettes need 50–3,500 µL but deliver ±0.5% reproducibility, support kinetics and thermostatting, and are the only choice for

A long-path cuvette is a quartz cell with path length above 10 mm — typically 50, 100, or 200 mm — used for trace UV-Vis analysis where extremely dilute analytes need amplification of the Beer-Lambert signal. A 10× longer path boosts absorbance by 10×, dropping detection limits from ~ppm to ~ppb. Common applications include drinking

Choosing cuvette path length by analyte concentration is the practical application of Beer-Lambert (A = ε·c·L) at the bench: keep the measured absorbance in the 0.1–1.0 AU linear range by selecting a path length that matches your sample. Use sub-mm cells (0.01–0.5 mm) for concentrated proteins and undiluted dyes; standard 10 mm for analytes at