Catalog Number - 95025-07-1S

The 95025-07-1S BASIK Headspace Caps are one of the most popular headspace solutions from MICROSOLV, offering a balanced combination of performance, ease of use, and cost efficiency.

These caps feature white silicone rubber / natural beige PTFE septa, providing excellent chemical resistance and low bleed, while maintaining softness for easy autosampler penetration.

Designed for 20 mm crimp‑top headspace vials, the caps include a 10 mm center hole for consistent needle access and improved injection reproducibility.

Silicone/PTFE Septa – Proven, Balanced Performance

• White silicone rubber / natural beige PTFE

• Combines:

  • PTFE inertness (sample protection)

  • Silicone flexibility (resealing and penetration)

• Minimizes:

  • Extractables

  • Background interference

✅ Ideal for routine to sensitive GC headspace applications

Soft Septa – Easier Needle Penetration

• Durometer: 45 Shore A (softer than standard)

• Thickness: 3.0 mm

• Provides:

  • Lower needle force

  • Reduced needle wear

  • Smooth penetration

✅ Improves autosampler reliability and reproducibility

Wide Temperature Range – Highly Versatile

• 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 – Optimized for Autosamplers

• Open center design enables:

  • Consistent needle entry

  • Reduced septa stress

✅ Supports efficient, high‑throughput workflows

Crimp Top Design – Secure Seal Integrity

• 20 mm aluminum crimp cap

• Provides:

  • Airtight sealing

  • Reduced evaporation

  • Reliable containment of volatile samples

✅ Critical for accurate headspace analysis

Designed for 20 mm Headspace Vials

• Compatible with:

  • 20 mm crimp‑top headspace vials

• Ensures:

  • Proper fit

  • Consistent results

✅ Supports reproducible chromatography performance

Most Popular – Cost vs. Performance Balance

• One of the most widely used headspace caps

• Offers:

  • Reliable performance

  • Lower cost vs. premium options

✅ Ideal for:

• Routine GC labs

• High‑throughput environments

• Budget‑conscious operations

Typical Applications

• Headspace GC analysis

• Environmental VOC testing

• Pharmaceutical QA/QC

• Food and flavor analysis

• Routine and high‑volume labs

Important Usage Notes

• Requires 20 mm crimping tool for proper sealing

• Softer septa:

  • Improves penetration

  • Maintains good resealing for multiple injections

✅ Recommended for general-purpose and high-throughput headspace workflows