Sarstedt Disposable Cuvette 2 Boxes with 100 Cuvettes Each - Total of 200

Sarstedt 67.758 UV-Transparent Micro Cuvette – 70 µL to 2000 µL, 8.5 mm Center Height

The Sarstedt 67.758 is a premium disposable micro cuvette engineered for precision spectrophotometry in the ultraviolet and visible spectrums. Manufactured from a specialized, UV-transparent polymer, this cuvette provides excellent light transmission from 220 nm to 1600 nm, making it an ideal, cost-effective alternative to expensive quartz cuvettes. The unique internal geometry features a narrow "V" shaped base, allowing for accurate measurements with sample volumes as small as 70 µL, while accommodating up to 2000 µL for standard dilutions. Designed with a standard 10 mm path length and an 8.5 mm beam center height (Z-dimension), the 67.758 ensures compatibility with most leading spectrophotometers. Its disposable nature eliminates the time-consuming cleaning protocols and potential carryover effects required with reusable cells, streamlining high-throughput genomic and proteomic workflows.

Technical Performance and Design

• Broad UV-VIS Range: Validated for high optical clarity down to 220 nm, allowing for the accurate measurement of DNA and RNA at 260 nm and proteins at 280 nm.

• Micro-Volume Efficiency: The optimized internal cavity permits a minimum filling volume of only 70 µL, preserving precious or limited biological samples while still providing a full 10 mm light path.

• 8.5 mm Center Height: Precision-engineered for instruments with a lower optical beam height (e.g., many Eppendorf and Bio-Rad systems), ensuring the light path passes perfectly through the center of the micro-volume sample.

• Optical Windows: Features two high-clarity, parallel optical windows designed to minimize light scattering and provide a consistent, reproducible baseline for every measurement.

Product Specifications

• Catalog Number: 67.758

• Material: UV-Transparent Plastic

• Volume Range: 70 µL – 2000 µL

• Path Length: 10 mm

• Center Height (Z-Dimension): 8.5 mm

• Wavelength Range: 220 nm to 1600 nm

• Quantity: Typically sold in boxes of 100

Key Benefits & Applications

• Nucleic Acid Quantitation: The primary choice for measuring A260/A280 ratios in molecular biology labs to determine the concentration and purity of DNA and RNA samples.

• Protein Analysis: Enables direct UV protein quantification at 280 nm as well as colorimetric assays (Bradford, BCA, Lowry) in the visible range.

• Disposable Convenience: Pre-packaged and ready to use; the disposable format protects the laboratory from hazardous chemicals or infectious agents used in the assay.

• Standard Footprint: The 12.5 x 12.5 mm exterior dimensions fit all standard cuvette holders and thermal-controlled cell changers.

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