Caps, Screw Top, with Tan Silicone Rubber / White PTFE Septa, bonded in "knurled", polypropylene, Green Caps. For use with 9-425mm thread, 12x32mm autosampler vials. AQ Brand. 100/PK.
Ultra-pure Septa and is a good choice for LCMS, GCMS & LCMS/MS. this cap is also recommended for Waters® Acquity™ autosamplers.