CUSTOM ITEM: Caps, Snap Top, with 0.04" thick, White Silicone Rubber / Yellow PTFE Pre-Slit (Star Shape) Septa, fitted in smooth, polyethylene, Light Blue Caps. For use with 11mm, 12x32mm Snap Top autosampler vials. BASIK Brand. BULK PRICING.
Additional Info:
Snap caps provide a fast, press‑fit sealing solution that simplifies vial preparation while maintaining consistent autosampler performance. The silicone/PTFE septa configuration delivers dependable sealing with strong chemical resistance for routine analytical workflows.
The 9502C‑E‑31CB BASIK Snap Caps feature a 0.04" thick silicone/PTFE septa with a star‑shaped (*) pre‑slit design. This multi‑slit configuration provides a significantly larger target area for autosampler needles, making penetration easier and reducing injection resistance. This design is particularly beneficial for high‑throughput systems requiring consistent needle alignment.
The ultra‑low bleed septa formulation reduces extractables and background interference compared to standard septa, making these caps well suited for LC‑MS applications where sensitivity is critical. While the star‑slit configuration improves penetration, it does not reseal as effectively as single‑slit or non‑slit septa.
As part of the BASIK product line, these caps provide a cost‑effective option for laboratories seeking enhanced performance at a lower cost. The light blue polyethylene cap supports easy identification and organized workflows.
Key Features & Benefits
Star‑shape pre‑slit septa ✅ Maximum needle target area
Easier penetration ✅ Minimal resistance during injection
Ultra‑low bleed septa ✅ Reduced extractables for LC‑MS
Silicone/PTFE construction ✅ Chemical resistance and protection
0.04" thick septa ✅ Durable for consistent performance
Economical BASIK line ✅ Cost-effective for routine use
Light blue cap format ✅ Supports identification and workflow organization
Typical Applications
LC‑MS workflows (low bleed requirement)
HPLC and UHPLC analysis
High‑throughput analytical laboratories
Methods requiring improved needle targeting alignment
Important Notes
For 11 mm, 12 × 32 mm snap top autosampler vials only
Star‑slit design improves penetration but reduces resealing vs other septa types
Suitable for multiple injections depending on method requirements
Ultra‑low bleed septa recommended for LC‑MS sensitivity
This and other custom items are Custom Ordered and require quotation
Additional Resources
Custom Item Pricing Information