Membrane Solution Autosampler Vial 2 ml with Septa Cap 100 Vials

Membrane Solutions 9-425 Autosampler Vials – 2 mL, Graduated, with PTFE/Silicone Septa Caps

The Membrane Solutions 9-425 Autosampler Vial kit is a premium, ready-to-use consumable explicitly engineered for high-performance liquid chromatography (HPLC) and gas chromatography (GC) workflows. Manufactured from high-purity Type I borosilicate glass, these 2 mL vials feature the industry-standard 9-425 thread profile, combining a wide-neck opening with the secure sealing of a screw-thread closure. Equipped with high-visibility printed graduations, a frosted marking spot, and precision-engineered PTFE/Silicone septa caps, this kit provides analytical chemists with an ultra-clean, highly reliable vessel that ensures accurate sample injection, prevents solvent evaporation, and guarantees universal compatibility with virtually all modern robotic autosamplers.

Technical Performance and Design

• Universal 9-425 Wide Opening: The 9 mm wide-mouth design provides a 40% larger target area for the autosampler needle compared to traditional 8-425 vials. This drastically reduces the risk of bent needles during high-throughput injection cycles and makes manual sample filling significantly easier.

• Premium PTFE/Silicone Septa: The included screw caps feature a dual-layer septum. The PTFE inner face provides absolute chemical inertness to aggressive solvents, while the highly elastic silicone backing ensures rapid, leak-proof resealing after the needle punctures it, completely preventing volatile sample evaporation.

• Type I Borosilicate Glass: Manufactured from ultra-pure, low-expansion borosilicate glass that limits ion leaching and pH shifting. This ensures that sensitive organic compounds and trace analytes do not adhere to the glass wall or degrade over time.

• Graduations & Marking Spot: Features crisp, ceramic-printed volume graduations for quick visual confirmation of sample volume, alongside a large frosted writing patch to prevent sample mix-ups during complex queue setups.

Product Specifications

• Manufacturer: Membrane Solutions

• Product Type: Chromatography Autosampler Vials

• Nominal Volume: 2.0 mL

• Thread Profile: Standard 9-425 (9 mm)

• Material: Type I Borosilicate Glass

• Closure Type: Ribbed Screw Cap with PTFE/Silicone Septa

• Features: Graduated, Frosted Marking Area

Key Benefits & Applications

• HPLC & GC Workflows: The absolute standard sample vessel for analytical chemistry, providing the chemical resistance required to hold harsh organic solvents like acetonitrile, methanol, and hexane without extracting plasticizers from the cap.

• Broad Instrument Compatibility: The 12 x 32 mm dimensions and 9-425 thread profile guarantee flawless integration into robotic autosampler carousels from major instrument manufacturers, including Agilent, Waters, Shimadzu, and Thermo Scientific.

• Workflow Efficiency: By providing the vials, caps, and septa pre-packaged as a complete kit, laboratory managers can streamline their purchasing and ensure technicians always have perfectly matched components ready for immediate use.

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