Autosampler caps and septa are critical components for maintaining a reliable seal between the vial and chromatographic system. This category includes screw caps, snap caps, crimp caps, headspace caps, push caps, and cap septa designed for use in HPLC, LC‑MS, GC, and headspace GC applications.
Caps are engineered to match the thread design, finish, and material properties of compatible autosampler vials, helping to minimize evaporation, prevent leaks, and support consistent injection performance. Proper cap selection is essential for reproducible results, especially when working with volatile compounds, trace‑level analytes, or mass‑spectrometry‑sensitive methods.
This category includes caps with Soft‑Guard™ and AQR™ septa technologies, offering controlled pierceability, resealing performance, and low background extractables. Available configurations are designed to meet the needs of routine analysis, method development, and high‑sensitivity workflows where sample integrity and cleanliness are required.
Use the subcategories above, described below to explore specific cap types based on vial style, sealing method, and application requirements.
Screw Caps: Precision and Performance:
Perfect Fit: Designed to match the thread and pitch of the vial threads, preventing leaks and evaporation.
Guaranteed Compatibility: All MicroSolv™ screw caps meet our vials’ requirements for optimal performance.
Soft-Guard Septa: Our most popular screw caps feature Soft-Guard septa for easy pierce-ability.
Advanced Quality (AQR™): For the highest purity, our AQR™ caps have virtually no detectable extractables, even with MS/MS.
Snap Caps: Reliable and Versatile:
Tailored Design: Manufactured to match the vial for superior performance.
Material Excellence: Made from plastic with variable pliability to suit different brands.
Perfect Match: All MicroSolv™ Snap Caps are compatible with our Snap Top vials.
Soft-Guard Brand™: Optimal Penetration and Resealing:
Screw Caps and Snap Caps: Designed to match the septa to the autosampler for the best penetration resistance and resealing.
Crimp Caps: Long-Lasting Seals:
Durability: Provide the longest-lasting seal when crimped properly.
Specific Use: Ideal for serum finish vials, not recommended for Snap Top Vials.
Septa Handling Tips:
Careful Handling: Use non-powder gloves to remove septa from packaging and insert them into caps to maintain purity.
Choose MicroSolv™ for Unmatched Quality and Performance
Explore our extensive range of autosampler and storage solutions and experience the difference in quality and reliability with MicroSolv™.
