(VAOF22) 22ml Absorption Cuvette, Fused, Lightpath 50mm, 40x14x52.5 mm, 2 Clear Windows

Description VAOF22 Fused Quartz Long Path Length Cuvette is a 2-window cuvette with a 50 mm optical path length and a 22 ml volume. This model belongs to our specialized series of long-path absorption cuvettes, designed to provide significantly enhanced sensitivity for trace-level analyte detection. Fused fabrication ensures excellent thermal and chemical durability, making it ideal for demanding analytical environments. Why Long Path Length Matters Long path length cuvettes are especially useful when working with **low-concentration or trace samples**, where standard 10 mm cuvettes provide insufficient absorbance signals. Based on the Beer–Lambert Law (A = ε × c × l), extending the optical path length directly increases absorbance, allowing even weak signals to be detected accurately. For example, when a 1 cm cuvette gives a near-zero absorbance for a dilute sample, a 5 cm cuvette can amplify that signal several times, enabling precise quantification. This is particularly valuable for: Trace pollutant and nutrient detection in environmental water samples (e.g., nitrates, phosphates, heavy metals). Low-concentration analyte measurements in pharmaceutical, biological, or material science research. Improving signal-to-noise ratio and extending linear detection ranges. Experiments requiring ultra-high sensitivity with stable optical alignment. Key Features 50 mm optical path length — extends the light path to amplify absorbance, increasing sensitivity for trace detection. 2-window design — optimized for straight-beam UV/VIS absorbance measurements. Fused fabrication — provides exceptional resistance to heat (up to 600 °C) and most chemical environments. Long-path configuration — ideal for environmental monitoring, trace analysis, and high-precision applications. Broad wavelength range — 190 – 2500 nm, suitable for UV/VIS and NIR spectroscopy. Typical Applications Trace analyte detection in water and environmental samples. UV/VIS absorbance spectroscopy for low-concentration measurements. Pharmaceutical and chemical research requiring enhanced sensitivity. Long-path detection setups for regulatory or QA/QC testing. Advanced optical experiments in R&D laboratories. Fused Fabrication Notes Fused fabrication ensures superior optical clarity, chemical resistance, and heat stability. Not suitable for hydrofluoric acid (HF) or strong organic solvents such as toluene and acetone. Powder seams may discolor over time but do not affect measurement performance. Typical path length tolerance is ±0.06 – 0.08 mm. Cuvette Specifications Type Long Path Absorption Quartz Cuvette Optical Path Length 50 mm Article No. VAOF22 Volume 22 ml Measuring Method Absorption Cells Clear Walls 40 × 14 mm Number of Windows 2 Wavelength Range UV/VIS (190 – 2500 nm) Height 40 mm Width (Inside) 11.5 mm Width (Outside) 14 mm Depth (Inside) 50 mm Depth (Outside) 52.5 mm Center Height (Z) 8.5 – 20 mm Fabrication Method Fused* Package Cell Only Note: Long-path cuvettes like VAOF22 are designed to significantly increase measurement sensitivity for low-concentration and trace analysis. Fused fabrication provides superior durability and optical performance but should not be used with HF or strong organic solvents. This 50 mm path length cuvette is ideal for environmental, analytical, and high-precision R&D 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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