Caps, Snap Top, with Soft-Guard, White Silicone Rubber / Red PTFE Pre-Slit Septa, fitted in smooth, polyethylene, Yellow 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 consistent autosampler performance.
The 9502C‑E‑30Y Soft‑Guard™ Snap Caps combine pre‑slit septa design with advanced Soft‑Guard™ silicone formulation to optimize both needle penetration and resealing performance. The pre‑slit reduces resistance during autosampler needle entry, while the Soft‑Guard™ material enhances resealing compared to standard septa—helping extend instrument uptime and reduce missed injections.
Pre‑slit septa are commonly recommended for autosampler systems such as Waters® Alliance and Acquity, where smooth and consistent needle entry is critical for reliable operation.
The bonded PTFE/silicone septa provide strong chemical resistance and protect sample integrity across HPLC and LC‑MS workflows. The yellow polyethylene cap allows easy visual identification and supports color‑coded laboratory workflows for improved sample organization.
Key Features & Benefits
Soft‑Guard™ pre‑slit septa ✅ Easier penetration with improved resealing
Optimized for Waters® systems ✅ Reliable performance in Alliance & Acquity
Snap-top closure ✅ Fast, press-fit sealing without threading
PTFE/silicone bonded septa ✅ Chemical resistance and sample protection
Yellow cap format ✅ Supports identification and workflow organization
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
Routine and regulated testing environments
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, consistency, and uptime
Additional Resources