Caps, Screw Top, with White Silicone Rubber / White PTFE Septa, fitted in knurled polypropylene, Black Caps. For use with 24-414mm threaded EPA Style vials. BASIK Brand. 100/PK..
EPA quality septa can be used for EPA testing or for long term storage with any 30, 40 or 60 EPA Style vial.
Cap has a 12.5mm top hole.