Catalog Number - 95025-26-4B

The 95025-26-4B BASIK Headspace Caps are a made‑to‑order solution designed specifically for SPME (Solid Phase Micro‑Extraction) workflows, combining a dual‑profile silicone/PTFE septa with magnetic bimetallic cap construction for optimized performance in automated systems.

These caps are fitted in 20 mm blue bimetallic magnetic closures with an 8 mm center hole, providing enhanced sealing, reliable autosampler compatibility, and easier crimping compared to all‑steel caps.

✅ Recommended for validated SPME workflows requiring magnetic, easy‑crimp caps

SPME‑Style Septa – Fiber Protection & Ease of Entry

• Dual‑thickness septa design:

  • 3.0 mm outer sealing ring

  • 1.5 mm thinner center target zone

• Provides:

  • Easier SPME needle / fiber penetration

  • Reduced risk of fiber breakage

  • Improved sampling consistency

✅ Ideal for SPME autosampler workflows

High Purity Silicone/PTFE Septa – Clean Performance

• White silicone rubber / blue PTFE

• Offers:

  • Good chemical inertness

  • Reduced extractables

  • Clean baseline performance

✅ Suitable for routine to sensitive GC headspace analysis

Bimetallic Magnetic Caps – Automation + Easier Crimping

• Bimetallic construction:

  • Magnetic center for autosampler handling

  • Aluminum outer ring for easier crimping

• Blue color provides:

  • Visual identification

  • Workflow organization

✅ Ideal for:

• CTC PAL® autosamplers

• Other SPME‑compatible automated systems

8 mm Center Hole – Balanced Access & Sealing

• Provides:

  • Reliable autosampler / fiber access

  • Adequate sealing surface

• Works synergistically with SPME septa design

✅ Optimized for SPME injection consistency and seal integrity

Wide Temperature Range – Headspace Ready

• Operating range:

  • -60°C to 200°C

✅ Suitable for:

• Heated headspace GC

• VOC and semi‑volatile compounds

• SPME workflows under thermal conditions

Crimp Top Design – Secure Seal Integrity

• 20 mm bimetallic magnetic crimp cap

• Provides:

  • Airtight sealing

  • Reduced evaporation

  • Reliable containment of volatile samples

✅ Essential for accurate GC headspace/SPME analysis

Designed for 20 mm Headspace Vials

• Compatible with:

  • 20 mm crimp‑top headspace vials

✅ Ensures:

• Proper fit

• Consistent analytical performance

Performance Positioning – SPME + Ease‑of‑Use Option

• Compared to standard septa:

  • ✅ Easier penetration

  • ✅ Reduced fiber damage

• Compared to steel magnetic caps:

  • ✅ Easier crimping

• Compared to flat thin septa:

  • ✅ Better sealing integrity

✅ Ideal for:

• SPME workflows

• automated GC systems

• high‑throughput analytical labs

Typical Applications

• SPME headspace GC analysis

• Environmental VOC testing

• Food and flavor analysis

• Pharmaceutical QA/QC

• Automated high‑throughput workflows

Important Usage Notes

• Requires 20 mm crimping tool for proper sealing

• Magnetic caps:

  • Require compatible autosampler systems

• SPME septa:

  • Optimized for fiber insertion

  • Not intended for heavy repeated needle injections

✅ Best suited for:

• SPME‑specific 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: