White 8-425 Open Top Screw Closures


White 8-425 open top screw closures with PTFE/silicone septa for 2mL autosampler vials. Ideal for HPLC and GC analysis with excellent sealing and chemical resistance.

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White 8-425 Open Top Screw Closures:

Precision Sealing Solutions for 2mL Autosampler Vials in HPLC & GC Applications
The White 8-425 Open Top Screw Closures are meticulously engineered for compatibility with standard 2mL 8-425 threaded autosampler vials. Featuring a built-in PTFE/Silicone septa, these closures deliver superior chemical resistance, leak prevention, and resealability, making them an ideal choice for high-precision analytical workflows.

Constructed from high-quality, chemically inert materials, they provide excellent sealing performance to prevent sample contamination, evaporation, and loss of volatile compounds. Designed to meet the rigorous demands of HPLC (High-Performance Liquid Chromatography) and GC (Gas Chromatography), these closures help maintain the integrity of sensitive samples during storage and automated analysis.

Key Features and Benefits

  • High-Quality Material Composition
    Manufactured from durable materials with PTFE-lined silicone septa, providing exceptional resistance to solvents, acids, and organic compounds.

  • Autosampler-Compatible Design
    The open-top format allows autosampler needles to pierce the septa directly—no need to manually remove the cap—supporting automated, high-throughput testing.

  • Excellent Sealing & Contamination Control
    Ensures airtight sealing to prevent sample degradation, cross-contamination, or loss of analytes during storage and transport.

  • Versatile Use Across Analytical Platforms
    Widely compatible with leading autosampler systems used in clinical, environmental, pharmaceutical, and chemical labs.

  • Easy to Use and Highly Adaptable
    Simple screw-thread design makes closure application and removal quick and efficient, reducing manual error and improving workflow productivity.

Applications

These white 8-425 open top screw closures are ideal for:

  • HPLC and GC autosampler analysis

  • Pharmaceutical and clinical research

  • Environmental and food safety testing

  • Chemical and quality control laboratories

  • Any setting where precise sample containment and retrieval are required

White 8-425 Open Top Screw Closures are a smart, lab-proven solution for secure sample handling in automated analytical systems—delivering precision, consistency, and performance with every test.

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