Catalog Number - 95020-40T-S-K

The 95020-40T-S-K MICROSOLV Headspace Caps are a made‑to‑order, bulk configuration designed for high‑throughput headspace GC workflows, combining butyl rubber / PTFE septa with magnetic steel screw caps for secure sealing and automated system compatibility.

Supplied as 1000 caps per case, this format is ideal for laboratories requiring efficiency, consistency, and reduced ordering frequency. These caps are designed with ND18 screw threads and an 8 mm center hole, providing tool‑free sealing and reliable autosampler access.

✅ Recommended for validated, high‑volume workflows

Bulk Case Format – High Throughput Efficiency

• 1000 caps per case

• Designed for:

  • High‑volume laboratories

  • Production environments

  • Reduced procurement frequency

✅ Supports cost efficiency and operational continuity

✅ Also available in smaller quantities:

• Smaller Pack Quantities for 95020-40T-S Headspace Screw Caps with Butyl/PTFE Septa (100/Pack configuration available)

Screw Top Design – ND18 Precision Thread

• ND18 (18 mm precision thread)

• Provides:

  • Tool‑free sealing

  • Consistent closure

  • Fast sample preparation

✅ Ideal for labs preferring screw‑top workflows

Magnetic Steel Caps – Automation Compatible

• Steel caps with magnetic properties

• Enables:

  • Robotic handling

  • Integration with autosamplers

• Silver finish:

  • Clean identification

  • Corrosion resistance

✅ Compatible with:

• Agilent® headspace systems

• PerkinElmer TurboMatrix® 16, 40, and 110

• Other magnetic‑cap autosamplers

Butyl/PTFE Septa – Balanced Sealing + Chemical Resistance

• Reddish butyl rubber / grey PTFE

• Combines:

  • Butyl elasticity → strong seal

  • PTFE barrier → improved chemical resistance

• Reduces:

  • Sample interaction vs. butyl alone

✅ Ideal for routine to moderately sensitive GC headspace methods

Septa Characteristics – Durable & Reliable

• Thickness: 1.6 mm

• Durometer: 55 Shore A

• Provides:

  • Good resealing

  • Controlled needle penetration

  • Consistent multi‑injection performance

✅ Suitable for extended autosampler runs

8 mm Center Hole – Optimized Access & Seal

• Provides:

  • Reliable needle access

  • Adequate sealing surface area

• Balances:

  • Seal integrity

  • Injection consistency

✅ Ideal for automated headspace workflows

Temperature Compatibility – Headspace Ready

• Suitable for:

  • Standard headspace GC conditions

• Butyl/PTFE system supports:

  • Moderate temperature applications

✅ Designed for routine analytical workflows

Designed for ND18 Headspace Vials

• Compatible with:

  • 18 mm precision thread (ND18) headspace vials

✅ Ensures:

• Proper fit

• Reproducible results

Performance Positioning – Bulk + Screw Top + Automation

• Compared to smaller packs:

  • ✅ Lower cost per unit

• Compared to butyl‑only:

  • ✅ Improved chemical resistance

• Compared to crimp caps:

  • ✅ Faster sealing (no tool required)

• Compared to non‑magnetic caps:

  • ✅ Autosampler compatibility

✅ Ideal for:

• high‑throughput laboratories

• QC and production environments

• automated headspace systems

Typical Applications

• Headspace GC analysis

• Pharmaceutical QA/QC

• Environmental VOC testing

• Food and flavor analysis

• High‑volume analytical labs

Important Usage Notes

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

• Magnetic caps:

  • Require compatible autosampler systems

✅ Best suited for:

• routine, high‑volume headspace GC 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:

✅ Also available in smaller quantities:

• Smaller Pack Quantity Options for 95020-40T-S-K Headspace Screw Caps with Butyl/PTFE Septa (100/Pack and other configurations available)