Description VAOF19 Fused Quartz Long Pathlength Cuvette is a 50 mm optical path, 43 ml capacity large cuvette designed for high-sensitivity absorbance testing. The extended path length amplifies weak signals, enabling more accurate measurements of dilute samples, trace analytes, and low-concentration solutions. This model’s wide, flat clear-wall design ensures excellent transmission and minimal signal loss, making it ideal for demanding analytical applications. Key Features 50 mm optical path — enhances sensitivity and improves signal-to-noise ratio for trace analysis. 43 ml volume — accommodates large sample volumes, reducing pipetting error and evaporation impact. Fused quartz construction — superior UV transparency (190–2500 nm), high temperature stability, and chemical resistance. 2-window flat-base design — optimized for standard absorption and transmission measurements. Excellent parallelism and dimensional accuracy for precise spectrophotometric readings. Typical Applications Environmental trace contaminant detection Low-concentration absorbance assays Water and air quality monitoring Photometric and spectrophotometric method development OEM and research instrumentation Fused Fabrication Notes Not recommended for HF and strong organics like toluene and acetone. Powder seams may discolor over time without affecting optical quality. Dimensional tolerance: ±0.06 – 0.08 mm. Cuvette Specifications Type Long Path Quartz Cuvette Optical Path Length 50 mm Article No. VAOF19 Volume 43 ml Measuring Method Absorption Cells Base Type Flat Number of Windows 2 Wavelength Range UV/VIS (190 – 2500 nm) Height 45 mm Width (Inside) 20 mm Width (Outside) 24 mm Depth (Inside) 50 mm Depth (Outside) 54 mm Center Height (Z) 8.5 – 20 mm Fabrication Method Fused* Package Cell Only Note: VAOF19 is a long pathlength fused quartz cuvette designed to amplify weak absorbance signals, making it highly suitable for trace detection, low-concentration analysis, and advanced spectrophotometric applications. Comparison of Fabrication Types 1234 *Molded*Fused*Bonded / Glued UV vis ( 190- 2500 nm)YesYesYes Transmission Matched On RequestNoNo Transmission > 80%YesYesYes Resistant to Acids and Bases (except hydrofluoric acid)YesYesNo Resistant to Organic SolventsYesYesNo Usable upto 600°C (1112°F)YesYesYes Usable upto 1200°C (2192°F)YesNoNo 0 Variations ReadingOn RequestNoNo FabricationMoldedAssembled with Quartz PowderAssembled with Glue AdhesivesNoNoYes StorageShort Term StorageClean After UseClean After Use Available MaterialFused Quartz Material NoteMolded and fused cuvettes and cells are assembled by direct fusion without the use of adhesives throughout the production process. This guarantees resistance against corrosive chemicals and high temperature. Each quartz cuvette and cell has excellent transmission from 190nm to 2500nm. 1 QVARZ Cuvettes Transmission Characteristics The following table is our cuvettes and cells made of quartz material suitable for wavelength from 190nm to 2500nm and depicts the percentage transmission for the material. IR or Glass material is not included. Why QVARZ Cuvettes and Cells?QVARZ is world-renowned as the producer of premium quartz cuvettes. Over fifteen years of experience manufacturing quartz cuvettes ensures that every QVARZ cuvettes are manufactured to the most exacting standards for reproducible results. Spectrophotometry cuvettes - Most spectrophotometry applications in the visible and UV ranges benefit from QVARZ spectrophotometry cuvettes. Our cuvettes made of fused quartz material deliver precise and reliable readings even at wavelengths as low as 190 nm. QVARZ cuvettes are compatible with most spectrophotometers and photometers with standard 0.2 - 100 mm path lengths. Fluorometry cuvettes - QVARZ brings two decades of experience molding high-quality spectrophotometry cuvettes to new four-sided clear cuvettes for fluorometry. Available in standard quartz material with ultra-low auto-fluorescence for the highest precision measurements. Protective packaging - QVARZ cuvettes are encased in dust-free, low scratching expanded polystyrene packaging. This ensures that premium cuvettes arrive in the laboratory ina the same pristine condition they were in at the factory, with optical quality windows and free of contaminants. Volumes for most purposes - Our cuvettes are available in a variety of ranges from macro to macro semi-micro sizes to respond to the needs of most scientific applications. We are also able to customize sample volume to deliver consistent, accurate findings. Perform consistently - QVARZ Cuvettes are constructed from high-quality fused quartz materials and are grouped by manufacturing mold cavities to ensure the lowest fluctuation in extinction coefficient. Customization - Custom cuvettes and cells are encouraged and available upon request; mechanical drawings with specifications and tolerances are prerequisites. Awesome pricing and flexibility on small quantities. To the best of our knowledge, the technical information provided here is accurate. However, Qvarz.com assumes no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch. 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