Caps, Screw Top, with Silicone Rubber / PTFE Pre-Slit Septa, bonded in wide mouth, "knurled", polypropylene, Black Caps. For use with 10-425mm threads, 12x32mm autosampler vials. BASIK Brand. 100/PK.
Additional Info:
Pre-slit for easy penetration by autosampler needles.
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