Catalog Number - 95020-40T-S

The 95020-40T-S MICROSOLV Headspace Caps are a made‑to‑order screw‑top configuration engineered for headspace GC applications using 18 mm precision thread (ND18) vials, combining butyl rubber / PTFE septa with magnetic steel caps for secure sealing and automated handling.

Designed with an 8 mm center hole and ND18 threads, these caps deliver reliable sealing, consistent autosampler access, and compatibility with leading headspace systems.

✅ Recommended for validated workflows and instrument‑specific applications

Screw Top Design – ND18 Precision Thread

• ND18 (18 mm precision thread)

• Provides:

  • Tool‑free sealing

  • Consistent closure torque

  • Ease of use in manual and automated workflows

✅ Ideal for labs preferring screw‑top sealing over crimping

Magnetic Steel Caps – Automation Compatible

• Steel caps with magnetic properties

• Enables:

  • Robotic handling

  • Integration with automated headspace samplers

• Silver finish:

  • Clean appearance

  • 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 sealing

  • PTFE barrier → chemical resistance

• Reduces:

  • Sample interaction vs. butyl alone

✅ Ideal for routine to moderately sensitive headspace GC methods

Septa Characteristics – Controlled Performance

• Thickness: 1.6 mm

• Durometer: 55 Shore A

• Provides:

  • Good resealing

  • Controlled needle penetration

  • Stable multi‑injection performance

✅ Suitable for repeated analytical sequences

8 mm Center Hole – Balanced Access & Seal Integrity

• Provides:

  • Adequate septa contact area

  • Reliable needle access

• Balances:

  • Seal strength

  • 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 conditions

Designed for ND18 Headspace Vials

• Compatible with:

  • 18 mm precision thread (ND18) headspace vials

✅ Ensures:

• Proper fit

• Reliable performance

Bulk Availability

✅ Case quantities available:

• Headspace Caps 95020-40T-S Case Quantity Options (1000/Case and other bulk sizes available)

Performance Positioning – Screw Top + Balanced Chemistry Option

• Compared to butyl‑only:

  • ✅ Improved chemical resistance

• Compared to silicone/PTFE:

  • ✅ Stronger sealing performance

• Compared to crimp caps:

  • ✅ Faster, tool‑free sealing

• Compared to non‑magnetic caps:

  • ✅ Autosampler compatibility

✅ Ideal for:

• routine QC labs

• autosampler-based workflows

• instrument‑specific methods

Typical Applications

• Headspace GC analysis

• Pharmaceutical QA/QC

• Environmental VOC testing

• Food and flavor analysis

• Automated headspace workflows

Important Usage Notes

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

• Magnetic caps:

  • Require compatible autosampler systems

✅ Best suited for:

• Routine to moderately sensitive headspace GC workflows in Elmer TurboMax® 16, 40 & 110 and other autosamplers.

🚨 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 larger quantities:

• Case Quantity Options for 95020-40T-S Headspace Screw Caps with Butyl/PTFE Septa (1000/Case and other bulk sizes available)