Catalog Number - 95025-08-5B

The 95025-08-5B BASIK Headspace Caps are a made‑to‑order, high‑purity configuration combining ultra‑low bleed silicone/PTFE septa with magnetic bimetallic cap construction, providing excellent chemical inertness, easier crimping vs. steel caps, and compatibility with automated headspace systems.

These caps are fitted in 20 mm blue bimetallic magnetic closures with an 8 mm center hole, offering enhanced seal integrity, consistent autosampler access, and streamlined handling in high‑throughput laboratory environments.

✅ Recommended for validated workflows requiring magnetic handling + high‑purity septa

Bimetallic Magnetic Caps – Automation + Ease of Crimping

• Bimetallic construction provides:

  • Magnetic compatibility for autosamplers

  • Easier crimping than full steel caps

• Blue finish supports:

  • Visual identification

  • Workflow organization

✅ Ideal for automated headspace systems and high‑throughput labs

High Purity Silicone/PTFE Septa – Ultra Low Bleed Performance

• White silicone rubber / white PTFE

• Proprietary processing provides:

  • Ultra‑low bleed

  • Low extractables

  • High chemical purity

✅ Excellent for:

• trace‑level detection

• sensitive GC methods

• regulated environments

Soft Septa – Easy Needle Penetration

• Durometer: 45 Shore A (soft formulation)

• Septa thickness: 3.0 mm

• Provides:

  • Reduced needle resistance

  • Smooth penetration

  • Lower needle wear

✅ Improves autosampler reliability and injection reproducibility

8 mm Center Hole – Enhanced Seal Integrity

• Smaller opening provides:

  • Increased septa surface area

  • Improved sealing performance

• Maintains:

  • Consistent autosampler access

✅ Ideal for tight sealing with automated handling systems

Wide Temperature Range – Headspace Ready

• Operating range:

  • -60°C to 200°C

✅ Suitable for:

• Heated headspace GC

• VOC and semi‑volatile analysis

• Broad analytical conditions

Crimp Top Design – Secure Seal Integrity

• 20 mm bimetallic magnetic crimp cap

• Provides:

  • Airtight sealing

  • Reduced evaporation

  • Reliable volatile sample containment

✅ Essential for accurate and reproducible headspace GC analysis

Designed for 20 mm Headspace Vials

• Compatible with:

  • 20 mm crimp‑top headspace vials

✅ Ensures:

• Proper fit

• Consistent analytical performance

Performance Positioning – Automation + Ultra‑Low Bleed Option

• Compared to standard aluminum caps:

  • ✅ Magnetic handling capability

• Compared to steel caps:

  • ✅ Easier crimping

• Compared to standard silicone/PTFE:

  • ✅ Ultra‑low bleed performance

✅ Ideal for:

• automated GC headspace workflows

• high‑throughput laboratories

• high‑sensitivity analytical methods

Typical Applications

• Automated headspace GC analysis

• Pharmaceutical QA/QC and validation

• Environmental VOC testing

• Food and flavor analysis

• Trace‑level contaminant detection

Important Usage Notes

• Requires 20 mm crimping tool for proper sealing

• Magnetic caps:

  • Require compatible autosampler systems

✅ Best suited for:

• automated, high‑purity, high‑throughput workflows

🚨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: