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

Pre‑slit septa reduce resistance during autosampler needle entry, helping improve injection consistency where smooth penetration is required.

The 9502S‑E‑30C‑Y Soft‑Guard™ Screw Caps combine a pre‑slit silicone/PTFE septum with a low‑coring formulation that maintains elasticity over repeated injections. This supports reliable resealing and helps reduce missed injections, particularly in systems such as Waters® Alliance and Acquity.

Bonded PTFE/silicone septa provide chemical resistance and protect sample integrity across HPLC, GC, LC‑MS, and GC‑MS workflows. The yellow polypropylene cap allows for easy sample identification and features a knurled exterior for secure handling with standard 9‑425, 12 × 32 mm autosampler vials.

Key Features & Benefits

• Pre‑slit septa ✅ Easier needle penetration

• Low coring, consistent resealing ✅ Supports reliable injections

• PTFE/silicone bonded septa ✅ Chemical resistance and sample protection

• Fits 12 × 32 mm autosampler vials ✅ Standard 9‑425 compatibility

• Yellow knurled cap ✅ Easy identification and handling

Typical Applications

• HPLC and UHPLC analysis

• LC‑MS and GC‑MS workflows

• Waters® Alliance and Acquity systems

• Routine analytical laboratories

Important Notes

• For 9‑425, 12 × 32 mm autosampler vials only

• Suitable for multiple injections

• Bonded pre‑slit septa—no assembly required

Additional Resources

• Learn more about Soft‑Guard™ Septa Technology for autosampler performance and resealing efficiency

• View Case Quantity 9502S‑E‑30C‑Y Soft‑Guard™ Pre‑Slit Screw Caps for 9‑425 Autosampler Vials

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