Catalog Number - 9502S-20C-B

The 9502S‑20C‑B MICROSOLV™ Screw Caps are selected for chromatography workflows requiring enhanced needle cleaning action and improved resealing performance during repeated injections. The multi‑layer red PTFE/white silicone/red PTFE septa configuration was developed for compatibility with older autosampler systems where additional mechanical needle wiping is beneficial.

Manufactured with blue knurled polypropylene caps and fitted multi‑layer septa, these caps are designed for use with standard 9‑425 thread, 12 × 32 mm autosampler vials. The dual red PTFE surfaces help wipe residue from autosampler needles during injection, making these caps useful for carryover reduction in certain legacy HPLC systems comparable to Agilent® 1050 platforms.

Triple‑Layer Septa Design

• Red PTFE / white silicone / red PTFE septa

• Multi‑layer sealing configuration

• Enhanced needle wiping action

• Supports improved resealing performance

✅ Improved post‑injection sealing characteristics

Legacy Instrument Applications

• Designed for older autosampler configurations

• Suitable for systems comparable to:

  • Agilent® 1050

• Useful for carryover reduction workflows

• Designed for specialized HPLC applications

✅ Optimized for legacy autosampler systems

Standard 9‑425 Compatibility

• Fits 9‑425 screw thread vials

• Compatible with:

  • 12 × 32 mm autosampler vials

  • Industry standard autosampler formats

✅ Broad autosampler compatibility

Knurled Polypropylene Caps

• Blue polypropylene construction

• Knurled exterior improves:

  • Grip

  • Installation

  • Removal

• Secure sealing performance

✅ Convenient laboratory handling

Fitted Septa Configuration

• Fitted septa design

• Reliable sealing performance

• Suitable for routine injections

• No bonded septa required for many legacy systems

✅ Dependable routine chromatography performance

Chromatography Applications

• Suitable for:

  • HPLC analysis

  • Legacy autosampler systems

  • Carryover reduction workflows

  • Routine analytical testing

✅ Ideal for specialized legacy chromatography workflows

✅ Also available: Case Quantity MICROSOLV™ 9502S‑20C‑B Screw Caps