Catalog Number - 95025-23-4D

The 95025-23-4D MICROSOLV Headspace Caps are a made‑to‑order configuration specifically designed for SPME (Solid Phase Micro‑Extraction) applications, combining ultra‑clean silicone/PTFE septa with magnetic steel caps for automated handling.

These caps feature a reduced septa thickness (1.5 mm) and an 8 mm center hole, providing low resistance for SPME fiber penetration, while maintaining reliable sealing performance and compatibility with 20 mm crimp top headspace vials.

✅ Recommended for validated SPME workflows and autosampler‑specific methods

SPME‑Optimized Septa – Reduced Thickness for Fiber Access

• Septa thickness: 1.5 mm (thinner than standard)

• Designed to:

  • Minimize resistance for SPME fibers

  • Reduce fiber damage

  • Improve sampling consistency

✅ Ideal for SPME workflows and delicate fiber insertions

High Purity Silicone/PTFE Septa – Clean Analytical Performance

• White silicone rubber / blue PTFE

• Ultra‑clean construction provides:

  • Low extractables

  • Reduced background interference

  • Good chemical inertness

✅ Suitable for trace‑level and sensitive GC applications

Magnetic Steel Caps – Automation Ready

• Steel caps with magnetic properties

• Enable:

  • Robotic handling

  • Autosampler compatibility

• Gold finish:

  • Improves visibility

  • Provides corrosion resistance

✅ Compatible with:

• CTC PAL® autosamplers

• Other automated SPME systems

Optimized for SPME Autosampler Systems

• Specifically designed for:

  • SPME headspace vials

  • Fiber‑based sampling techniques

✅ Recommended pairing:

• SPME Vials for Headspace GC Analysis (20 mm Crimp Top, compatible configurations available)

Durable Septa Characteristics

• Durometer: 55 Shore A

• Provides:

  • Controlled penetration resistance

  • Adequate resealing

  • Mechanical stability

✅ Balanced for SPME use vs. standard injection applications

8 mm Center Hole – Balanced Access & Seal

• Provides:

  • Adequate septa support

  • Reliable sealing performance

  • Consistent fiber/needle access

✅ Optimized for SPME and autosampler compatibility

Wide Temperature Range – Headspace Ready

• Operating range:

  • -60°C to 200°C

✅ Suitable for:

• Heated headspace GC

• VOC and semi‑volatile analysis

• SPME workflows under thermal conditions

Crimp Top Design – Secure Seal Integrity

• 20 mm magnetic steel crimp cap

• Provides:

  • Airtight sealing

  • Reduced evaporation

  • Consistent sample containment

✅ Essential for accurate headspace GC/SPME analysis

Designed for 20 mm Headspace Vials

• Compatible with:

  • 20 mm crimp‑top headspace vials

✅ Ensures:

• Proper fit

• Reliable analytical performance

Performance Positioning – SPME + Automation Specialist Option

• Compared to standard 3 mm septa:

  • ✅ Easier SPME fiber penetration

• Compared to thicker septa:

  • ✅ Reduced fiber wear

• Compared to non‑magnetic caps:

  • ✅ Automated handling capability

✅ Ideal for:

• SPME applications

• CTC PAL® systems

• high‑throughput automated workflows

Typical Applications

• SPME headspace GC analysis

• Environmental VOC testing

• Food and flavor analysis

• Pharmaceutical QA/QC

• Automated sampling workflows

Important Usage Notes

• Requires 20 mm crimping tool for proper sealing

• Magnetic caps:

  • Require compatible autosampler systems

• Thin septa:

  • Optimized for SPME

  • Not intended for heavy multi‑injection needle use

✅ 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: