CUSTOM ITEM: Caps, Screw Top, with White Silicone Rubber / Natural PTFE Pre-Slit Septa, fitted in "knurled", polypropylene, Red Caps. For use with 9-425mm thread, 12x32mm autosampler vials. BASIK Brand. BULK PRICING.
Additional Info:
Pre‑slit septa are used to reduce needle penetration resistance, helping improve injection consistency in autosampler workflows.
The 9502S‑E‑35R BASIK Screw Caps offer a cost‑effective pre‑slit septa design using natural (undyed) PTFE combined with silicone. This provides the same inertness and durability as dyed PTFE without added colorants, while enabling easier needle entry for systems such as Waters® Alliance and Acquity.
The red polypropylene cap features a knurled exterior for secure handling and consistent sealing. Designed for compatibility with 9‑425 thread, 12 × 32 mm autosampler vials, these caps provide a practical balance of performance and value for routine laboratory use.
Key Features & Benefits
Pre‑slit septa ✅ Easier needle penetration
Economical BASIK design ✅ Cost-effective for routine analysis
Natural PTFE (undyed) ✅ Inert with no added dyes
Silicone/PTFE septa ✅ Reliable sealing and chemical resistance
Red knurled cap ✅ Secure handling and identification
Typical Applications
HPLC and UHPLC analysis
LC‑MS and GC‑MS workflows
Waters® Alliance and Acquity systems
Routine laboratory testing
Important Notes
For 9‑425, 12 × 32 mm autosampler vials only
Suitable for multiple injections
Pre‑slit septa reduces penetration resistance
This and other custom items are Custom Ordered and require quotation
Custom Item Pricing Information