Black 8-425 Open Top Screw Closures


Black 8-425 open top screw closures with PTFE/silicone septa for 2mL autosampler vials. Ideal for HPLC and GC analysis with secure, leak-proof sealing.

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Black 8-425 Open Top Screw Closures:

High-Integrity Closures for 2mL Autosampler Vials in HPLC & GC Applications

The Black 8-425 Open Top Screw Closures are expertly designed for use with 2mL 8-425 threaded autosampler vials, providing secure, high-performance sealing for precision laboratory analysis. Each closure features a built-in PTFE/silicone pre-slit septum, allowing for direct needle penetration during automated sampling without the need for manual cap removal.

Crafted from premium-grade materials, these closures offer excellent chemical resistance, tight sealing, and thermal stability, effectively preventing sample contamination, evaporation, and degradation. Their robust construction and compatibility with automated systems make them a trusted choice in high-throughput laboratories conducting HPLC (High-Performance Liquid Chromatography) and GC (Gas Chromatography) testing.

Key Features and Benefits

  • PTFE/Silicone Septa for Chemical Resistance
    Provides an inert, resealable surface that resists interaction with organic solvents, acids, and volatile compounds.

  • Precision Fit for 2mL 8-425 Autosampler Vials
    Ensures reliable sealing and sample integrity throughout the analytical process.

  • Optimized for Automation
    The open-top design with a pre-slit septum allows autosampler needles to access samples directly—boosting analysis speed and reducing manual intervention.

  • Leak-Proof and Evaporation-Resistant
    Minimizes analyte loss and prevents external contamination, supporting accurate and reproducible results.

  • Compatible with Industry-Standard Systems
    Suitable for a wide range of autosampler platforms used in pharmaceutical, environmental, biotech, and chemical testing labs.

  • User-Friendly & Durable
    Simple screw-top design ensures quick handling while maintaining performance across multiple uses.

Applications

  • High-throughput HPLC and GC autosampler analysis

  • Pharmaceutical and clinical research laboratories

  • Environmental and industrial quality control

  • Sample storage and preparation for chemical testing

For laboratories that demand precision, consistency, and reliability, the Black 8-425 Open Top Screw Closures are an essential accessory for modern autosampler-based workflows.

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