Caps, Screw Top, with Clear Silicone Rubber / PTFE, ultra-pure, LC-MS compatible LC Clean Septa, bonded in "knurled", polypropylene, Blue Caps. For use with 9-425mm thread, 12x32mm autosampler vials. MICROSOLV Brand. 100/PK.
Additional Info:
The 9502S‑06‑LCC screw caps are part of the LC‑Clean™ product line, developed specifically for LC‑MS workflows where background cleanliness, resealing integrity, and injection reproducibility are critical. This is a purpose‑built, niche cap, not a general‑use septa option.
These caps feature ultra‑pure clear silicone rubber laminated with PTFE, selected to minimize extractables and reduce background contributions that can interfere with sensitive mass spectrometric detection. The clear silicone formulation contains no pigments, supporting lower baseline noise in trace‑level LC‑MS analyses.
The non‑pre‑slit septa design is intentional, providing superior resealing properties compared to slit septa. This makes the caps well suited for methods involving repeated injections, longer sequences, or applications where maintaining vial integrity over time is more important than reduced needle penetration force.
The bonded septa construction securely anchors the septa within the polypropylene cap, helping prevent septa movement, dislodgement, or plunge during injection. This improves autosampler reliability and contributes to consistent, repeatable results across LC‑MS runs.
Optimized for LC‑MS systems using standard 9‑425 autosampler vials, the 9502S‑06‑LCC caps are ideal for laboratories prioritizing low background, high data quality, and dependable resealing performance.