Catalog Number - 9509S-10C-B

The 9509S‑10C‑B AQR™ Screw Caps are engineered for high‑purity chromatographic applications, offering exceptional chemical inertness and low background interference.

These caps feature ultra‑clean, non‑pigmented silicone rubber/PTFE septa, eliminating dyes or additives that can contribute to contamination, making them ideal for LC‑MS, LC‑MS/MS, and GC‑MS workflows requiring maximum signal integrity.

Designed for 9‑425 thread, 12 × 32 mm autosampler vials, the caps are constructed with knurled polypropylene closures for reliable handling and sealing performance.

Ultra‑Pure Septa – Maximum Signal Integrity

• Silicone rubber / PTFE septa

• Non‑pigmented (no dyes or colorants)

• Minimizes:

  • Extractables

  • Leachables

  • Background interference

✅ Ideal for trace‑level and MS‑sensitive applications

Designed for LC‑MS, LC‑MS/MS & GC‑MS

• Supports:

  • Ultra‑low detection limits

  • High‑sensitivity workflows

• Suitable for:

  • Pharmaceutical analysis

  • Environmental testing

  • Bioanalytical applications

✅ Ensures clean baselines and reproducible results

Standard 9‑425 Cap Format

• Fits 9‑425 screw thread vials

• Compatible with:

  • 12 × 32 mm autosampler vials

• Industry‑standard configuration

✅ Enables broad autosampler compatibility

Knurled Polypropylene Caps – Secure Handling

• Light blue polypropylene construction

• Knurled design improves:

  • Grip

  • Application and removal

✅ Provides consistent sealing and user-friendly handling

Non‑Pre‑Slit Septa Configuration

• Solid septa design (not pre‑slit)

• Ideal for:

  • Maximum seal integrity

  • Reduced evaporation

  • Controlled needle penetration

✅ Preferred when pre‑slits are not required

Instrument Compatibility

• Suitable for systems comparable to:

  • Waters® Alliance

  • Waters® Acquity™

✅ Supports high‑performance LC and LC‑MS platforms

Alternative Option (Pre‑Slit Septa)

✅ Also available:

• 9509S-30C-B Screw Caps with Pre‑Slit Silicone/PTFE Septa for 9‑425 Vials (Light Blue, 100/Pack)

Typical Applications

• LC‑MS and LC‑MS/MS analysis

• GC‑MS workflows

• HPLC autosampler analysis

• Pharmaceutical and bioanalytical labs

• Trace‑level contaminant analysis

Important Usage Notes

• Use with 9‑425 thread, 12 × 32 mm vials only

• Non‑pre‑slit septa require proper needle alignment

• Ideal for applications requiring lowest possible background interference

✅ Also available:

• Case Quantity of AQR™ 9509S-10C-B Screw Caps with Silicone/PTFE Septa (bulk packaging option)