Caps, Screw Top, with White Silicone Rubber / White PTFE Pre-Slit Septa, fitted in "knurled", polypropylene, Blue Caps. For use with 9-425mm thread, 12x32mm autosampler vials. MicroSolv Brand. 100/PK
Pre-slit for easy penetration by autosampler needles. Recommended for Waters® Alliance & Acquity instruments.
Ultra-pure Silicone Rubber and "Cast" PTFE for excellent results in LCMS/MS compares to LCMS Certified brands.