Caps, Screw Top, with Silicone Rubber / PTFE Pre-Slit Septa, bonded in "knurled", polypropylene, Yellow Caps. For use with 9-425mm thread, 12x32mm autosampler vials. MICROSOLV Brand. 1000/CS
Additional Info:
Pre‑slit septa reduce resistance during autosampler needle entry, helping improve injection consistency in systems requiring smoother penetration.
The 9502S‑30C‑Y‑M screw caps feature bonded silicone/PTFE pre‑slit septa that enhance penetration performance and help prevent “septa plunge” into vials during injection. The bonded design keeps the septa securely in place, reducing the risk of dislodging during handling or repeated use, particularly in systems such as Waters® Alliance and Acquity.
The silicone/PTFE construction provides chemical resistance and reliable sealing across HPLC, GC, LC‑MS, and GC‑MS workflows. The yellow polypropylene cap allows for easy visual identification and includes a knurled exterior for secure handling with standard 9‑425, 12 × 32 mm autosampler vials.
Key Features & Benefits
Pre‑slit septa ✅ Easier needle penetration
Bonded septa design ✅ Prevents septa plunge and dislodging
Silicone/PTFE construction ✅ Chemical resistance and sealing performance
Fits 12 × 32 mm autosampler vials ✅ Standard 9‑425 compatibility
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 analytical laboratories
Important Notes
For 9‑425, 12 × 32 mm autosampler vials only
Suitable for multiple injections
Bonded pre‑slit septa—no assembly required
Case quantity format (1000/CS)