Caps, Snap Top, with Soft-Guard, White Silicone Rubber / Red PTFE Pre-Slit Septa, fitted in smooth, polyethylene, Natural Transparent Caps. For use with 11mm, 12x32mm Snap Top autosampler vials. Soft-Guard Brand. 100/PK.
Additional Info:
Snap caps provide a fast, press‑fit sealing solution that simplifies vial preparation while maintaining reliable autosampler performance.
The 9502C‑E‑30C Soft‑Guard™ Snap Caps combine the advantages of pre‑slit septa with advanced Soft‑Guard™ silicone formulation. The pre‑slit design reduces needle resistance during injection, while the Soft‑Guard™ material enhances resealing performance compared to standard septa—helping increase instrument uptime and minimize missed injections.
Pre‑slit septa are commonly recommended for autosampler systems such as Waters® Alliance and Acquity, where consistent penetration and reduced force are critical for optimal performance.
The bonded PTFE/silicone septa provide excellent chemical resistance and protect sample integrity across HPLC and LC‑MS workflows. The natural (transparent) polyethylene cap allows clear visual inspection and alignment while maintaining ease of use in both routine and high‑throughput environments.
Key Features & Benefits
Soft‑Guard™ pre‑slit septa ✅ Easier penetration with improved resealing
Optimized for Waters® systems ✅ Consistent performance in Alliance & Acquity
Snap-top closure ✅ Fast, press-fit sealing without threading
PTFE/silicone bonded septa ✅ Chemical resistance and sample protection
Natural transparent cap ✅ Easy visibility and identification
Fits 12 × 32 mm snap top vials ✅ Standard 11 mm compatibility
Typical Applications
HPLC and UHPLC analysis
LC‑MS workflows
Waters® Alliance and Acquity systems
High-throughput analytical laboratories
Important Notes
For 11 mm, 12 × 32 mm snap top autosampler vials only
Suitable for multiple injections
Pre‑slit septa reduces penetration resistance
Soft‑Guard™ formulation improves resealing and consistency
Additional Resources