CUSTOM ITEM: Caps, Screw Top, with Silicone Rubber / PTFE Pre-Slit Septa, bonded in "knurled", polypropylene, White Caps. For use with 9-425mm thread, 12x32mm autosampler vials. MICROSOLV Brand. BULK PRICING.
Additional Info:
Pre‑slit septa reduce resistance during autosampler needle entry, helping improve injection consistency in demanding analytical workflows.
The 9502S‑30C‑W 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 transport or repeated use, particularly in systems such as Waters® Alliance and Acquity.
The silicone/PTFE construction offers chemical resistance and reliable sealing across HPLC, GC, LC‑MS, and GC‑MS applications. The white polypropylene cap includes a knurled exterior for secure handling and consistent torque when sealing 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
White knurled cap ✅ Clean appearance and secure handling
Typical Applications
HPLC and UHPLC analysis
LC‑MS and GC‑MS workflows
Waters® Alliance and Acquity systems
Routine and specialized analytical testing
Important Notes
For 9‑425, 12 × 32 mm autosampler vials only
Suitable for multiple injections
Bonded pre‑slit septa—no assembly required
Designed for improved penetration performance
This and other custom items are Custom Ordered and require quotation
Custom Item Pricing Information