(VAPB100M) 7mL Standard Absorption Cuvette with 2 PTFE Stopper, Bonded, Width 2mm, Lightpath 100mm

Description VAPB100M Black-Walled Long Pathlength Quartz Cuvette is a 100 mm optical path length absorption cuvette designed for ultra-trace measurements where sensitivity and signal-to-noise ratio are critical. Its black walls minimize stray light and fluorescence background, making it ideal for low-absorbance samples. The narrow slit design allows for precise optical alignment, and the PTFE stopper provides secure sealing to protect sensitive samples. Key Features Black wall design — effectively suppresses stray light and side scattering, improving measurement accuracy in trace analysis. 100 mm long pathlength — significantly increases sensitivity, suitable for ultra-low concentration measurements. Narrow slit (2 mm) — enhances optical alignment precision and minimizes sample volume requirements. PTFE stopper — seals the cuvette to prevent evaporation or contamination, suitable for volatile or oxygen-sensitive samples. Bonded quartz fabrication — provides high optical clarity in the 190 – 2500 nm UV/VIS range and strong chemical resistance. Typical Applications Trace contaminant detection and water analysis Low-absorbance UV/VIS spectroscopy Environmental testing and analytical chemistry Biological and pharmaceutical research Bonded Fabrication Notes Provides stable dimensions and good chemical resistance. Not suitable for HF. Typical dimensional tolerance: ±0.06 – 0.08 mm. Cuvette Specifications Type Black Wall Stopper Quartz Cuvette Optical Path Length 100 mm Article No. VAPB100M Volume 7 ml Measuring Method Absorption Cells Cap Type PTFE Stopper Number of Windows 2 Wavelength Range UV/VIS (190 – 2500 nm) Height 45 mm Width (Inside) 2 mm Width (Outside) 12.5 mm Depth (Inside) 100 mm Depth (Outside) 102.5 mm Center Height (Z) 8.5 – 20 mm Fabrication Method Bonded* Package Cell & Stopper Note: VAPB100M is a black-walled bonded quartz cuvette with a 100 mm pathlength, narrow slit, and PTFE stopper — an excellent choice for high-sensitivity UV/VIS spectroscopy of trace-level samples. 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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