Caps, Screw Top, with Silicone Rubber / PTFE Septa, fitted in "knurled", polypropylene, Black Caps. For use with 13-425mm thread, 15x45mm autosampler vials. BASIK Brand. 1000/CS.
Economical Cap with Septa for use in Older Waters instruments that accommodate 4ml autosampler vials.
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