Catalog Number - 95020-45S-T-K

The 95020-45S-T-K MICROSOLV Headspace Caps are designed for high‑volume headspace GC workflows, combining blue silicone rubber / transparent PTFE septa with magnetic steel screw caps for secure sealing and autosampler compatibility.

Supplied in a 1000‑count case, these caps are ideal for high‑throughput laboratories and production-scale testing, offering ND18 screw‑top convenience with reliable performance and reduced procurement frequency.

Bulk Case Format – High Throughput Efficiency

• 1000 caps per case

• Designed for:

  • High‑volume laboratories

  • Production environments

  • Fewer reorders and consistent supply

✅ Improves operational efficiency and cost control

✅ Also available in smaller quantities:

• Smaller Pack Quantity Options for 95020-45S-T-K Headspace Screw Caps with Silicone/PTFE Septa (100/Pack configuration available)

Screw Top Design – ND18 Precision Thread

• ND18 (18 mm precision thread)

• Enables:

  • Fast, tool‑free sealing

  • Consistent closure torque

  • Simplified workflow

✅ Ideal for manual and automated workflows without crimp tools

Magnetic Steel Caps – Automation Compatible

• Steel caps with magnetic properties

• Supports:

  • Robotic handling

  • Autosampler integration

• Silver finish:

  • Clean appearance

  • Corrosion resistance

✅ Compatible with:

• CTC® autosamplers

• Agilent® systems

• PerkinElmer TurboMatrix® 16, 40, and 110

Silicone/PTFE Septa – High Purity Performance

• Blue silicone rubber / transparent PTFE

• Provides:

  • Low extractables

  • High chemical inertness

  • Clean GC baselines

✅ Ideal for routine to sensitive headspace GC analyses

Soft Septa – Easy Needle Penetration

• Durometer: 45 Shore A

• Septa thickness: 1.3 mm

• Provides:

  • Smooth needle entry

  • Reduced penetration force

  • Lower needle wear

✅ Improves autosampler performance and consistency

8 mm Center Hole – Balanced Access & Sealing

• Provides:

  • Reliable autosampler access

  • Adequate sealing surface

• Balances:

  • Injection consistency

  • Seal integrity

✅ Suitable for automated headspace workflows

Temperature Compatibility – Headspace Ready

• Suitable for:

  • Heated headspace GC applications

• Silicone/PTFE design supports:

  • Broad temperature conditions

✅ Designed for high‑purity analytical environments

Designed for ND18 Headspace Vials

• Compatible with:

  • 18 mm precision thread (ND18) headspace vials

✅ Ensures:

• Proper fit

• Reproducible results

Performance Positioning – Bulk + High Purity + Automation

• Compared to smaller packs:

  • ✅ Lower cost per unit

• Compared to butyl/PTFE:

  • ✅ Lower bleed and extractables

• Compared to crimp caps:

  • ✅ Faster sealing (no crimp tool required)

• Compared to non‑magnetic caps:

  • ✅ Fully compatible with autosamplers

✅ Ideal for:

• high‑throughput laboratories

• automated GC headspace systems

• high‑purity analytical workflows

Typical Applications

• Headspace GC analysis

• Pharmaceutical QA/QC

• Environmental VOC testing

• Food and flavor analysis

• High‑volume automated workflows

Important Usage Notes

• Designed for ND18 screw‑top vials (not crimp top)

• Magnetic caps:

  • Require compatible autosampler systems

• No crimping tool required

✅ Best suited for:

• high‑volume, automated headspace GC workflows