Caps, Screw Top, with Silicone Rubber / PTFE Pre-Slit Septa, fitted in "knurled", polypropylene, Black Caps. For use with 13-425mm thread, 15x45mm autosampler vials. BASIK Brand. 100/PK.
Additional Info:
Economical Pre-Slit Cap for easy penetration by autosampler needles. Recommended for older Waters® instruments. Use with 15x45mm, 4ml vials.