Catalog Number - 95025-13-1S

The 95025-13-1S BASIK Headspace Caps are a made‑to‑order configuration designed for high‑purity headspace GC applications, featuring white silicone rubber / ivory PTFE septa (3 mil) for reduced extractables and reliable sealing performance.

These caps are fitted in 20 mm aluminum crimp closures with a 10 mm center hole, providing consistent autosampler needle access while maintaining a secure seal for volatile sample integrity.

✅ Recommended for validated workflows requiring specific septa thickness and composition

• Crimp Caps with Silicone/PTFE Septa (3 mil)

Silicone/PTFE Septa – High Purity, Low Extractables

• White silicone rubber / ivory PTFE

• 3 mil PTFE liner thickness

• Provides:

  • Good chemical inertness

  • Reduced background contamination

  • Clean chromatographic baselines

✅ Ideal for routine to moderately sensitive headspace GC applications

Soft Septa – Easy Needle Penetration

• Durometer: 45 Shore A

• Septa thickness: 3.0 mm

• Provides:

  • Reduced needle resistance

  • Smooth autosampler penetration

  • Lower instrument wear

✅ Improves reproducibility and injection consistency

Wide Temperature Range – Headspace Ready

• Operating range:

  • -60°C to 200°C

✅ Suitable for:

• Heated headspace GC

• Volatile and semi‑volatile compounds

• Broad analytical method conditions

10 mm Center Hole – Consistent Autosampler Access

• Open center design allows:

  • Smooth needle entry

  • Reduced septa stress

✅ Supports high‑throughput, automated workflows

Crimp Top Design – Secure Seal Integrity

• 20 mm aluminum crimp cap

• Provides:

  • Airtight sealing

  • Reduced evaporation

  • Reliable containment

✅ Essential for accurate headspace analysis

Designed for 20 mm Headspace Vials

• Compatible with:

  • 20 mm crimp‑top headspace vials

✅ Ensures:

• Proper fit

• Reliable analytical performance

Performance Positioning – Economical Thin PTFE Option

• Compared to thicker PTFE liners:

  • ✅ Lower cost

  • ✅ Easier penetration

• Compared to butyl septa:

  • ✅ Improved chemical resistance

• Compared to ultra‑low bleed systems:

  • ✅ Economical alternative

✅ Ideal when cost efficiency and ease of use are priorities

Typical Applications

• Headspace GC analysis

• Environmental VOC testing

• Pharmaceutical QA/QC

• Food and flavor analysis

• Routine laboratory workflows

Important Usage Notes

• Requires 20 mm crimping tool for proper sealing

• Confirm specifications prior to ordering

✅ Best suited for:

• routine to moderately sensitive analytical methods

Made‑to‑Order & Pricing Information

This is a custom, made‑to‑order item.

• Please contact Customer Service for formal quotation, lead time, and ordering assistance. Classification: