Caps, Screw Top, with White Silicone Rubber / Natural PTFE Pre-Slit Septa, fitted in "knurled", polypropylene, Yellow Caps. For use with 9-425mm thread, 12x32mm autosampler vials. BASIK Brand. 1000/CS.
Additional Info:
Pre‑slit septa are used to reduce needle penetration resistance, helping improve injection consistency in autosampler workflows.
The 9502S‑E‑35Y‑M BASIK Screw Caps utilize a pre‑slit silicone/PTFE septum paired with natural (undyed) PTFE, providing the same inertness and durability as dyed PTFE without added colorants. This design supports easier needle entry and is commonly used with systems such as Waters® Alliance and Acquity.
The yellow polypropylene cap allows for easy visual identification and features a knurled exterior for secure handling and consistent torque during sealing. Designed for compatibility with 9‑425 thread, 12 × 32 mm autosampler vials, these caps are well suited for high‑throughput laboratory environments.
Key Features & Benefits
Pre‑slit septa ✅ Easier needle penetration
BASIK economical design ✅ Cost-effective for high-volume use
Natural PTFE (undyed) ✅ Inert with no added dyes
Silicone/PTFE septa ✅ Reliable sealing performance
Yellow knurled cap ✅ Easy identification and handling
Typical Applications
HPLC and UHPLC analysis
LC‑MS and GC‑MS workflows
Waters® Alliance and Acquity systems
High‑throughput routine testing
Important Notes
For 9‑425, 12 × 32 mm autosampler vials only
Suitable for multiple injections
Pre‑slit septa reduces penetration resistance
Case quantity format (1000/CS)
Additional Resources