Caps, Snap Top, with Soft-Guard, White Silicone Rubber / Red PTFE Pre-Slit (X Shape) Septa, fitted in smooth, polyethylene, Natural Transparent Caps. For use with 11mm, 12x32mm Snap Top autosampler vials. Soft-Guard Brand. 1000/CS.
Additional Info:
Snap caps provide a fast, press‑fit sealing solution that simplifies vial preparation while maintaining reliable autosampler performance.
The 9502C‑E‑30CX‑M Soft‑Guard™ Snap Caps combine advanced Soft‑Guard™ silicone formulation with an X‑shape pre‑slit septa design to optimize needle entry and workflow efficiency. The Soft‑Guard™ material reduces penetration force while maintaining improved resealing compared to standard septa, helping extend instrument uptime and reduce missed injections in demanding environments.
The X‑shape pre‑slit configuration creates a larger needle strike zone, allowing easier alignment and smoother penetration—particularly beneficial for systems such as Waters® Alliance and Acquity. While this design improves ease of use and reduces stress on autosampler needles, it provides slightly less resealing performance compared to single‑slit septa.
The bonded PTFE/silicone septa offer excellent chemical resistance and protect sample integrity across HPLC and LC‑MS workflows. The natural (transparent) polyethylene cap allows clear visual inspection and alignment, making it especially useful for high‑throughput workflows where visibility and efficiency are important.
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 ✅ Ideal for autosampler systems
Snap-top closure ✅ Fast, press-fit sealing without threading
PTFE/silicone bonded septa ✅ Chemical resistance and sample protection
Natural transparent cap ✅ Easy visibility and sample identification
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™ septa improves consistency and instrument uptime
Case quantity format (1000/CS)