CUSTOM ITEM: Caps, Snap Top, with Soft-Guard, White Silicone Rubber / Red PTFE Pre-Slit (X Shape) Septa, fitted in smooth, polyethylene, Light Blue Caps. For use with 11mm, 12x32mm Snap Top autosampler vials. Soft-Guard Brand. BULK PRICING.

Additional Info:

Snap caps provide a fast, press‑fit sealing solution that simplifies vial preparation while maintaining consistent autosampler performance. The X‑shape pre‑slit septa increases the needle strike area, making it easier to align the autosampler needle and reducing penetration resistance.

The 9502C‑E‑30LBX Soft‑Guard™ Snap Caps combine this X‑slit configuration with advanced Soft‑Guard™ silicone formulation, delivering easier penetration while maintaining improved resealing compared to standard septa. This helps extend instrument uptime, reduce missed injections, and improve analytical consistency in routine and high‑throughput workflows.

Pre‑slit septa are commonly recommended for Waters® Alliance and Acquity systems where smooth needle entry is critical. While the X‑slit design enhances targeting and penetration, it provides slightly reduced resealing compared to single‑slit septa. The bonded PTFE/silicone septa ensure strong chemical resistance, while the light blue cap supports clear identification and efficient workflow color‑coding.


Key Features & Benefits

  • Soft‑Guard™ septa ✅ Easier penetration and improved resealing

  • X‑shape pre‑slit ✅ Larger target area for improved needle alignment

  • Reduced penetration resistance ✅ Supports consistent injections

  • Snap-top closure ✅ Fast, press-fit sealing without threading

  • PTFE/silicone bonded septa ✅ Chemical resistance and sample protection

  • Light blue cap format ✅ Supports identification and workflow organization


Typical Applications

  • HPLC and UHPLC analysis

  • LC‑MS workflows

  • Waters® Alliance and Acquity systems

  • High‑throughput analytical laboratories

  • Methods requiring improved needle targeting


Important Notes

  • For 11 mm, 12 × 32 mm snap top autosampler vials only

  • X‑slit design allows easier penetration but reduces resealing vs single‑slit septa

  • Suitable for multiple injections depending on method requirements

  • Soft‑Guard™ formulation improves consistency and instrument uptime

  • This and other custom items are Custom Ordered and require quotation


Additional Resources


Custom Item Pricing Information


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