Caps, Headspace, Screw Top, with White Silicone Rubber / Blue PTFE Septa, fitted in Steel, Magnetic, Silver Caps with 8mm center holes. For use with 18mm Precision Thread Headspace Vials. BASIK Brand. 1000/CS.
Additional Info:
The 95020-50S-W-K BASIK Headspace Caps are designed for high‑volume headspace GC workflows, combining white silicone rubber / blue PTFE septa with magnetic steel screw caps for secure sealing and automated system compatibility.
Supplied in a 1000‑count case, these caps provide an economical solution for budget‑minded laboratories, while maintaining ND18 screw‑top convenience and consistent analytical performance.
Bulk Case Format – High Throughput Efficiency
✅ 1000 caps per case
Designed for:
High‑volume laboratories
Routine production environments
Reduced ordering frequency
✅ Improves cost control and operational efficiency
✅ Also available in smaller quantities:
Screw Top Design – ND18 Precision Thread
ND18 (18 mm precision thread)
Provides:
Tool‑free sealing
Fast sample preparation
Consistent closure
✅ Ideal for manual and automated workflows without crimp tools
Magnetic Steel Caps – Automation Compatible
Steel caps with magnetic properties
Enables:
Robotic handling
Autosampler integration
Silver finish:
Clean appearance
Corrosion resistance
✅ Suitable for automated headspace GC systems
Silicone/PTFE Septa – Economical High Purity Option
White silicone rubber / blue PTFE
Provides:
Good chemical inertness
Reduced interaction vs. butyl
Clean chromatographic baselines
✅ Suitable for routine analytical applications
Septa Characteristics – Balanced Durability
Thickness: 1.5 mm
Durometer: 50 Shore A
Provides:
Controlled needle penetration
Reliable resealing
Consistent multi‑injection performance
✅ Ideal for routine GC workflows
8 mm Center Hole – Balanced Access & Seal
Provides:
Reliable autosampler access
Adequate septa contact area
Maintains:
Seal integrity
Injection consistency
✅ Designed for automated headspace applications
Temperature Compatibility – Headspace Ready
Suitable for:
Standard headspace GC conditions
Silicone/PTFE system supports:
Broad method compatibility
✅ Designed for routine laboratory use
Designed for ND18 Headspace Vials
Compatible with:
18 mm precision thread (ND18) headspace vials
✅ Ensures:
Proper fit
Reproducible results
Performance Positioning – Bulk + Economical + Automation
Compared to smaller packs:
✅ Lower cost per unit
Compared to premium silicone/PTFE:
✅ More economical
Compared to crimp caps:
✅ Tool‑free sealing
Compared to non‑magnetic caps:
✅ Autosampler compatibility
✅ Ideal for:
high‑volume laboratories
routine QC workflows
budget‑focused environments
Typical Applications
Headspace GC analysis
Environmental testing
Pharmaceutical QA/QC
Food and flavor analysis
High‑throughput routine labs
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, cost‑efficient workflows