Catalog Number - 95020-55S-W-K

The 95020-55S-W-K MICROSOLV Headspace Caps are designed for high‑volume headspace GC applications, combining white silicone rubber / blue PTFE temperature‑resistant septa with magnetic steel screw caps for secure sealing and full autosampler compatibility.

Supplied in a 1000‑count case, these caps deliver consistent performance, extended septa durability, and reduced ordering frequency, making them ideal for automated, high‑throughput laboratory environments.

Bulk Case Format – High Throughput Efficiency

• ✅ 1000 caps per case

• Designed for:

  • High‑volume laboratories

  • Production environments

  • Reduced procurement frequency

✅ Improves cost efficiency and workflow continuity

✅ Also available in smaller quantities:

• CUSTOM Smaller Package Quantity Options for 95020-55S-W-K Headspace Screw Caps with Temperature‑Resistant Silicone/PTFE Septa (100/Pack configuration available)

Screw Top Design – ND18 Precision Thread

• ND18 (18 mm precision thread)

• Provides:

  • Tool‑free sealing

  • Fast sample preparation

  • Consistent closure torque

✅ Ideal for manual and automated workflows without crimping tools

Magnetic Steel Caps – Automation Compatible

• Steel caps with magnetic properties

• Enables:

  • Robotic handling

  • Autosampler integration

• Silver finish:

  • Clean appearance

  • Corrosion resistance

✅ Compatible with:

• CTC® autosamplers

• Agilent® systems

• PerkinElmer TurboMatrix® 16, 40, and 110

Temperature‑Resistant Silicone/PTFE Septa – Durable & Clean

• White silicone rubber / blue PTFE

• Provides:

  • High chemical inertness

  • Low extractables

  • Reliable performance under elevated temperatures

✅ Ideal for routine to moderately demanding headspace GC methods

Higher Hardness Septa – Increased Durability

• Durometer: 55 Shore A

• Septa thickness: 1.5 mm

• Provides:

  • Greater resistance to deformation

  • Longer service life

  • Improved performance in repeated injections

✅ Suitable for extended autosampler runs

Wide Temperature Range – Headspace Ready

• Operating range:

  • -60°C to 200°C

✅ Suitable for:

• Heated headspace GC

• VOC and semi‑volatile analysis

• Elevated temperature workflows

8 mm Center Hole – Balanced Access & Seal

• Provides:

  • Reliable needle access

  • Adequate sealing surface area

✅ Ensures consistent injection performance and seal integrity

Designed for ND18 Headspace Vials

• Compatible with:

  • 18 mm precision thread (ND18) headspace vials

✅ Ensures:

• Proper fit

• Reproducible analytical results

Performance Positioning – Bulk + Durable + Temperature‑Resistant

• Compared to softer septa (45 Shore A):

  • ✅ Greater durability

  • ✅ Longer life

• Compared to butyl/PTFE:

  • ✅ Higher temperature tolerance

• Compared to crimp caps:

  • ✅ Tool‑free sealing

• Compared to non‑magnetic caps:

  • ✅ Full autosampler compatibility

✅ Ideal for:

• high‑volume laboratories

• automated GC headspace systems

• temperature‑demanding workflows

Typical Applications

• Headspace GC analysis

• Pharmaceutical QA/QC

• Environmental VOC testing

• Food and flavor analysis

• High‑throughput automated laboratories

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, durable, temperature‑resistant workflows