Catalog Number - 9502S-E-30C-G

The 9502S‑E‑30C‑G Soft‑Guard™ Screw Caps are selected for chromatography workflows requiring reliable pre‑slit septa performance and consistent autosampler injections. The bonded Soft‑Guard™ white silicone rubber/red PTFE septa design helps reduce septa movement while supporting smoother needle penetration and improved resealing performance.

Manufactured with green knurled polypropylene caps and precision pre‑slit Soft‑Guard™ septa, these caps are designed for use with standard 9‑425 thread, 12 × 32 mm autosampler vials commonly used in HPLC, GC, LC‑MS, and GC‑MS laboratories.

Pre‑Slit Soft‑Guard™ Septa

• Precision pre‑slit septa design

• Easier autosampler needle penetration

• Improved resealing performance

• Designed for repeated injections

✅ Consistent autosampler performance

Bonded Septa Construction

• Bonded white silicone rubber/red PTFE septa

• Helps reduce septa movement

• Minimizes septa dislodgement

• Improves cap stability during analysis

✅ Reliable injection reproducibility

Standard 9‑425 Compatibility

• Fits 9‑425 screw thread vials

• Compatible with:

  • 12 × 32 mm autosampler vials

  • Industry standard autosampler formats

✅ Broad autosampler compatibility

Instrument Compatibility

• Recommended for systems comparable to:

  • Waters® Alliance

  • Waters® Acquity™

• Suitable for autosamplers requiring pre‑slit septa

✅ Optimized for Waters‑style autosampler systems

Knurled Polypropylene Caps

• Green polypropylene construction

• Knurled exterior improves:

  • Grip

  • Installation

  • Removal

• Secure sealing performance

✅ Convenient laboratory handling

Chromatography Applications

• Suitable for:

  • HPLC analysis

  • GC workflows

  • LC‑MS applications

  • GC‑MS analysis

• One of the most popular pre‑slit cap configurations

✅ Ideal for routine analytical laboratories

✅ Also available:

• Case Quantity Soft‑Guard™ 9502S‑E‑30C‑G Screw Caps

• Additional information about Soft‑Guard™ Septa Technology